US 8524300

Here's a concise summary of US patent 8524300:

US Patent 8524300: Covered Retracted Confectionery

• Title: Covered retracted confectionery
• Assignee: Imaginings 3 Inc
• Inventors: Sidney Diamond, David Lisowski
• Filing Date: May 3, 2012
• Issue Date: September 3, 2013
• Abstract: The patent describes a covered, retractable confectionery device. It features a housing with hinged covers at the top that move between closed and open positions. A shaft inside the housing carries a confectionery and can move between a retracted (covered) and extended (exposed) position. A flange near the top of the shaft engages tabs on the hinged covers to keep them closed when the shaft is retracted. An actuator, slideably mounted on the exterior of the housing, allows the user to manually move the shaft to the extended position, exposing the confectionery. A bias (e.g., a spring) automatically retracts the shaft and confectionery, and closes the covers, when the actuator is released.

Plain-Language Overview of Independent Claims:

• Claim 1: This claim outlines a confectionery device where a candy on a shaft is housed within a casing. Hinged covers at the top protect the candy. When the shaft is in its lowered (retracted) position, a part of the shaft (a flange) keeps the covers closed. An external slider (actuator) pushes the shaft and candy upwards to expose the candy. When the slider is let go, a biasing mechanism (like a spring) automatically pulls the shaft and candy back down, closing the covers. This biasing mechanism becomes stronger when the actuator is used to extend the shaft.

• Claim 8: This claim is similar to Claim 1 but specifies that the biasing mechanism is a spring. It further details that this spring is pushed into compression when the actuator is moved to extend the shaft, thereby storing energy to retract the candy and close the covers automatically.

• Claim 12: This claim is also similar to Claim 1 but specifies that the biasing mechanism is a spring. However, it distinguishes itself by stating that the spring is pulled into compression (i.e., stretched) when the actuator is moved to extend the shaft. This stretched spring then automatically retracts the candy and closes the covers upon release of the actuator.

Uncertainty Regarding CAFC 2026 Dockets:
A search for US patent 8524300 within CAFC 2026 dockets could not be definitively confirmed. While the U.S. Court of Appeals for the Federal Circuit provides scheduled case calendars in PDF format for April, May, and June 2026, the available search capabilities do not allow for direct querying of specific patent numbers within these documents at this time.

As a patent attorney, I have investigated known litigation involving US patent 8524300.

Currently, there is no public record of litigation specifically naming US patent 8524300 as being involved in district court cases, Supreme Court cases, United States Court of Federal Claims cases, or cases before the Court of Appeals for the Federal Circuit (CAFC).

My search included looking for the patent on Unified Patents' litigation case list and exploring general information regarding PACER (Public Access to Court Electronic Records) and CAFC dockets. While PACER is a national index for federal court records, and CAFC provides information on its scheduled cases and filings, directly searching for specific patent numbers within all past and future dockets across these platforms can be complex without a direct, patent-specific search function, particularly for PACER which primarily functions as a search tool for federal litigation.

Therefore, based on the available search capabilities, I cannot definitively confirm any ongoing or concluded litigation for US patent 8524300.

Proceedings overview

There are no AIA trial proceedings on file for US patent 8524300 with the USPTO Patent Trial and Appeal Board (PTAB). This means that all claims of the patent remain untested in an AIA trial proceeding.

Strategic summary

As of today, May 20, 2026, all claims of US patent 8524300 (claims 1-15) are UNTESTED by any AIA trial proceeding at the PTAB. There are no records of Inter Partes Reviews (IPR), Post-Grant Reviews (PGR), or Covered Business Method (CBM) reviews filed against this patent. Consequently, there is no estoppel landscape under 35 U.S.C. § 315(e)(2) for any petitioner or their privies, as no grounds have been raised or could have been reasonably raised in such a proceeding. The absence of PTAB activity suggests that the patent has not yet been subjected to the scrutiny of an AIA trial.

Recommended next steps

Since no PTAB activity exists for US patent 8524300, a defendant facing assertion of this patent today has all prior-art grounds potentially available for an AIA trial challenge (e.g., IPR or PGR, depending on filing deadlines). The absence of IPRs can be a signal, as well-asserted patents often attract such challenges.

Inventors

• Sidney Diamond (Imaginings 3 Inc)
• David Lisowski (Imaginings 3 Inc)

No unusual patterns noted; both inventors are associated with the original assignee.

Original assignee

The original assignee, Imaginings 3 Inc, is named on the issued patent. Their primary line of business appears to be novelty confectionery devices, as suggested by the patent's subject matter. Based on the "Active" legal status and anticipated expiration in 2032-05-03, Imaginings 3 Inc appears to be an operating company. There is no information within the patent document to determine if they shipped a product embodying the claims.

Assignment timeline

• 2012-05-03 (executed) / recorded 2012-05-03 — Reel 028153/0433
  • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
  • Assignor: DIAMOND, SIDNEY; LISOWSKI, DAVID
  • Assignee: IMAGININGS 3, INC., ILLINOIS
  • Correspondent: NOT RECORDED. This is the initial assignment from the inventors to the original assignee.
  • Context: Internal reorg

No other assignments for US8524300 were found on the USPTO Patent Assignment Search database.

Timeline diagram

timeline
    title Ownership of US 8524300
    2012 : Inventors assigned to Imaginings 3 Inc
    2013 : Issued to Imaginings 3 Inc

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The only recorded assignment is from the inventors to the original operating company, Imaginings 3 Inc.
2. Known asserter in the chain — not present. Imaginings 3 Inc is not identified as a known asserter.
3. Repeat correspondent across the chain — not present. Only one assignment is recorded, and no correspondent information is provided for it.
4. Cascading transfers — not present. Only one assignment is recorded.
5. Pre-litigation transfer — not present. There is no record of litigation involving this patent.
6. Bankruptcy fire-sale — not present. No indication of bankruptcy for Imaginings 3 Inc.
7. Privateering — not present. No evidence to suggest this pattern.
8. Defensive aggregator (anti-NPE) — not present. The patent is still held by the original assignee.

Verdict

Insufficient data (only the original assignment). Only one assignment is recorded, which is the initial transfer from the inventors to the original operating assignee, Imaginings 3 Inc (Reel 028153/0433, executed and recorded 2012-05-03). There are no subsequent assignments to analyze for NPE-related signals.

Verification: https://assignmentcenter.uspto.gov/

To identify the most relevant prior art for US patent 8524300, I will examine the patent citations listed within the patent itself. These are typically the references considered by the patent examiner during prosecution and are therefore highly relevant.

Here's an analysis of the cited prior art from US patent 8524300:

Most Relevant Prior Art for US Patent 8524300

The patent document for US8524300B1 lists 14 patent citations. Several of these are explicitly discussed in the "Background Art" section as being relevant to the field of novelty confectionery devices and efforts to enclose unconsumed confectioneries. The inventors of US8524300 specifically identify a "need for a closed retracted confectionery that will automatically retract the exposed confectionery and close once the consumer releases the actuator" as a disadvantage of previous designs. This suggests that prior art lacking this automatic retraction and closure feature would be particularly relevant for distinguishing the claimed invention.

Based on the patent's own discussion, the most relevant prior art references appear to be:

1. US 5,531,318 A to Coleman et al.

   • Full Citation: Coleman et al. U.S. Pat. No. 5,531,318, issued Jul. 2, 1996.
   • Publication/Filing Date: Publication date: July 2, 1996. Filing date: March 23, 1995.
   • Brief Description: This patent shows a housing for replaceable hard candy with a split cap or top that is spring biased to close once the candy is manually retracted.
   • Potential Anticipation (35 U.S.C. § 102): The patent itself notes a key distinction: in Coleman et al. ('318), "the candy is manually retracted," implying the closure is not automatic upon release of an actuator. US8524300's independent claims (Claims 1, 8, 12) all explicitly include a "bias urging the shaft and the confectionery into the retracted position below the closed hinged covers" and specify that this bias "is positioned to be increased when the actuator moves the shaft from the retracted position to the extended position" (Claim 1), or more specifically, that a spring is "pushed into compression" (Claim 8) or "pulled into compression" (Claim 12) when the actuator moves the shaft to the extended position, resulting in automatic retraction and closure upon release. Therefore, Coleman et al. ('318) would likely not anticipate the automatic retraction and closure feature upon release of the actuator. However, elements such as a housing, hinged covers, a shaft, and a confectionery are present and would be considered relevant for obviousness arguments.

2. US 6,136,352 A to Silverstein et al.

   • Full Citation: Silverstein et al. U.S. Pat. No. 6,136,352, issued Oct. 24, 2000.
   • Publication/Filing Date: Publication date: October 24, 2000. Filing date: July 20, 1999.
   • Brief Description: This patent shows an upwardly spring biased hard candy in a cylindrical barrel with a removable cap.
   • Potential Anticipation (35 U.S.C. § 102): While it features an "upwardly spring biased hard candy," the description mentions a "removable cap" rather than hinged covers that automatically close with the retraction of the confectionery. The absence of hinged covers and the automatic closing mechanism (as defined in Claims 1, 8, and 12) suggests it would not directly anticipate these features.

3. US 5,913,453 A to Coleman et al.

   • Full Citation: Coleman et al. U.S. Pat. No. 5,913,453, issued Jun. 22, 1999.
   • Publication/Filing Date: Publication date: June 22, 1999. Filing date: April 15, 1997.
   • Brief Description: A replaceable lollipop is received atop a cylindrical dispenser for small pieces of candy or gum with a slotted dispensing shaft that is pressed upwardly against the bias of a spring into the small pieces to dispense them through the shaft.
   • Potential Anticipation (35 U.S.C. § 102): This reference describes a spring-biased dispensing shaft and a confectionery. However, it's focused on dispensing small pieces of candy or gum, and the mechanism for covering the confectionery isn't described as hinged covers automatically closing upon retraction, as claimed in US8524300. It would be highly relevant for the concept of a spring-biased shaft and an actuator.

4. US 6,763,681 B1 to Klundt.

   • Full Citation: Klundt U.S. Pat. No. 6,763,681, issued Jul. 20, 2004.
   • Publication/Filing Date: Publication date: July 20, 2004. Filing date: December 21, 2001.
   • Brief Description: This patent shows a ring, wearable by the user, with a spring connecting a holder for a lollipop.
   • Potential Anticipation (35 U.S.C. § 102): This patent is described as a "ring, wearable by the user," and while it has a spring and a lollipop holder, it doesn't appear to include a housing, hinged covers, or the specific retraction and automatic closure mechanism described in US8524300. It would be relevant for general novelty confectionery items with spring mechanisms.

Other Cited Patent References (less explicitly discussed in Background Art but still relevant for comprehensive analysis):

• US 2,443,361 A to Satz Frank

  • Full Citation: US2443361A.
  • Publication/Filing Date: Publication date: June 15, 1948. Priority date: August 21, 1945.
  • Brief Description: Article holder.
  • Potential Anticipation (35 U.S.C. § 102): Without more detailed information on its mechanism, it's difficult to assess direct anticipation. However, as an "article holder," it might disclose a housing or a basic retractable mechanism that could be relevant for obviousness arguments.

• US 2,552,697 A to Charles M Tursky

  • Full Citation: US2552697A.
  • Publication/Filing Date: Publication date: May 15, 1951. Priority date: January 10, 1947.
  • Brief Description: Lipstick holder.
  • Potential Anticipation (35 U.S.C. § 102): Lipstick holders are a common example of retractable devices. This patent could be relevant for general retractable mechanisms, particularly those involving a shaft within a housing, as well as the concept of covering and uncovering an item. It's unlikely to anticipate the specific hinged covers and automatic closure tied to a confectionery as claimed in US8524300.

• US 2,610,732 A to Verna E Calhoun

  • Full Citation: US2610732A.
  • Publication/Filing Date: Publication date: September 16, 1952. Priority date: December 21, 1949.
  • Brief Description: Receptacle for lipstick holders and lipsticks.
  • Potential Anticipation (35 U.S.C. § 102): Similar to US2552697A, this would be relevant for the broader concept of enclosing and storing items, especially in the context of retractable cosmetic devices.

• US 2,626,049 A to Charles M Tursky

  • Full Citation: US2626049A.
  • Publication/Filing Date: Publication date: January 20, 1953. Priority date: July 5, 1947.
  • Brief Description: Dispenser for lipsticks and the like.
  • Potential Anticipation (35 U.S.C. § 102): Again, relevant for retractable dispensing mechanisms and enclosure, but likely not specific to confectionery and automatic hinged cover closure.

• US 3,192,552 A to King Harold Lawrence

  • Full Citation: US3192552A.
  • Publication/Filing Date: Publication date: July 6, 1965. Priority date: March 15, 1963.
  • Brief Description: Liquid applicator.
  • Potential Anticipation (35 U.S.C. § 102): Liquid applicators may have retractable elements, but their specific mechanisms and purpose differ significantly from a confectionery device with hinged covers.

• US 4,838,722 A to A.W. Faber-Castell Unternehmensverwaltung Gmbh & Co.

  • Full Citation: US4838722A.
  • Publication/Filing Date: Publication date: June 13, 1989. Priority date: July 13, 1985.
  • Brief Description: Device for dispensing flowable substances.
  • Potential Anticipation (35 U.S.C. § 102): Similar to liquid applicators, this would be relevant for general dispensing mechanisms but unlikely to anticipate the specific features of US8524300.

• US 5,131,774 A to Georg Karl Geka-Brush Gmbh

  • Full Citation: US5131774A.
  • Publication/Filing Date: Publication date: July 21, 1992. Priority date: June 16, 1988.
  • Brief Description: Applicator pen for liquids.
  • Potential Anticipation (35 U.S.C. § 102): Another retractable applicator, relevant for general mechanical principles but not the specific confectionery application.

• US 6,530,709 B1 to Pamela D. Washington

  • Full Citation: US6530709B1.
  • Publication/Filing Date: Publication date: March 11, 2003. Priority date: November 30, 2000.
  • Brief Description: Nail polish applicator.
  • Potential Anticipation (35 U.S.C. § 102): Similar to other applicator patents, general retractable mechanisms might be found here, but not the specific combination for a covered retracted confectionery.

• US 7,331,730 B2 to Pentel Kabushiki Kaisha

  • Full Citation: US7331730B2.
  • Publication/Filing Date: Publication date: February 19, 2008. Priority date: November 18, 2002.
  • Brief Description: Retractable writing material.
  • Potential Anticipation (35 U.S.C. § 102): This could be very relevant for the general concept of a retractable mechanism operated by a slideably mounted actuator and a bias. However, the specific application to confectionery with hinged covers that automatically close upon retraction would likely be a distinguishing feature. The "PEN POP" product mentioned in the background art of US8524300 also combined a pen and a lollipop, showing the concept of retractable writing materials combined with other items.

• US 2009/0097899 A1 to Craig Carroll

  • Full Citation: US20090097899A1.
  • Publication/Filing Date: Publication date: April 16, 2009. Priority date: October 16, 2007.
  • Brief Description: Retractable Substance Dispenser.
  • Potential Anticipation (35 U.S.C. § 102): This broad title suggests it could contain elements of a retractable dispenser, which would be highly relevant for the overall mechanism. The specifics of the substance, the covers, and the automatic closure would determine direct anticipation.

Summary of Anticipation and Obviousness:

None of the cited prior art references, as described within US8524300's "Background Art" or by their titles, explicitly disclose all elements of the independent claims (Claims 1, 8, and 12) of US8524300, particularly the combination of hinged covers that are closed by a flange on a retracted shaft, an external slideable actuator, and a bias that automatically retracts the shaft and closes the covers upon release of the actuator. This "automatic retraction and closure" upon release of the actuator is explicitly highlighted by US8524300 as a key improvement over the prior art, where consumers "had to remember to manually move the actuator down to again cover the confectionery after it was exposed and partially consumed."

Therefore, a direct anticipation under 35 U.S.C. § 102 by any single prior art reference is unlikely based on the available information. However, many of these references contain elements that would be highly relevant for an obviousness analysis under 35 U.S.C. § 103, particularly those disclosing retractable mechanisms, spring biases, and enclosures for various items. For example, combining the retractable candy holder of Coleman et al. ('318) with the automatic spring biasing of other retractable devices could be argued for obviousness.

Obviousness Analysis under 35 U.S.C. § 103

A patent claim is considered obvious under 35 U.S.C. § 103 if the differences between the claimed invention and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art (PHOSITA). The PHOSITA is a hypothetical person who possesses the ordinary skill and knowledge in the relevant technical field and is capable of ordinary creativity, not an automaton or a genius. This person is presumed to have known all relevant prior art.

The field of the invention for US 8524300 is novelty confectionery devices, particularly closed storage devices for confectioneries. A PHOSITA in this field would likely be an engineer or designer with practical experience in consumer product design, materials, and simple mechanical mechanisms, especially those involving dispensing or retracting elements for small consumer goods.

The inventors of US 8524300 explicitly identified a disadvantage in prior art products: the consumer, usually a child, "had to remember to manually move the actuator down to again cover the confectionery after it was exposed and partially consumed." This statement highlights the motivation to achieve automatic retraction and closure upon release of an actuator.

Based on the cited prior art, several combinations could lead to an obviousness challenge. The core inventive step claimed in US 8524300 (Claims 1, 8, and 12) revolves around the automatic retraction of the confectionery and the simultaneous closure of hinged covers upon release of an actuator, driven by a bias (e.g., a spring) that is increased during extension.

Combination 1: US 5,531,318 A (Coleman et al.) in view of US 7,331,730 B2 (Pentel Kabushiki Kaisha) or US 2009/0097899 A1 (Carroll)

• US 5,531,318 A (Coleman et al.): This patent discloses a "housing for replaceable hard candy with a split cap or top that is spring biased to close once the candy is manually retracted." This reference teaches a housing, a replaceable hard candy, a split cap/top (which can be considered hinged covers), and a spring bias that aids in closing the covers. The key distinction, as noted in US 8524300, is that the candy is "manually retracted."

• US 7,331,730 B2 (Pentel Kabushiki Kaisha - Retractable writing material): This patent teaches a retractable mechanism for writing materials, likely involving a slideably mounted actuator and a bias (e.g., a spring) that automatically retracts the writing tip when the actuator is released. The "PEN POP" product mentioned in the background of US 85524300 also combined a pen and a lollipop, showing the general concept of retractable writing materials combined with other items.

• US 2009/0097899 A1 (Carroll - Retractable Substance Dispenser): This application broadly covers a "Retractable Substance Dispenser," which would inherently include a retractable mechanism, likely operated by an actuator and a bias for automatic retraction.

Motivation for Combination:
A PHOSITA in the field of novelty confectionery devices would be motivated to combine the features of Coleman et al. ('318) with the automatic retraction mechanisms found in devices like retractable pens (Pentel Kabushiki Kaisha, '730) or general retractable dispensers (Carroll, '899). The explicit problem identified in US 8524300 is the need for automatic retraction and closure. Given that Coleman et al. ('318) already teaches a housing, hinged covers (split cap), and a confectionery, and that it mentions a "spring biased to close once the candy is manually retracted," a PHOSITA would recognize the benefit of integrating an automatic retraction mechanism. It would be a predictable modification to replace the manual retraction of Coleman et al. ('318) with an automatic spring-biased retraction system commonly found in other consumer products, such as those shown in Pentel Kabushiki Kaisha ('730) or Carroll ('899), to improve user convenience and hygiene. The "PEN POP" product also demonstrates the existing concept of combining retractable mechanisms from writing instruments with confectionery.

The PHOSITA would understand that:

• A spring can be configured to "urge" a component into a retracted position.
• An actuator can be mechanically linked to compress or stretch this spring when moving a component to an extended position.
• Upon release of the actuator, the stored energy in the spring would automatically return the component to its retracted position.

This combination directly addresses the problem identified in the background of US 8524300 by providing a mechanism where "the bias urging the shaft and the confectionery into the retracted position... is positioned to be increased when the actuator moves the shaft from the retracted position to the extended position" (as in Claim 1), resulting in automatic retraction and cover closure.

Combination 2: US 5,913,453 A (Coleman et al.) in view of US 5,531,318 A (Coleman et al.) and general knowledge of spring-biased mechanisms.

• US 5,913,453 A (Coleman et al.): This patent describes a "replaceable lollipop received atop a cylindrical dispenser for small pieces of candy or gum with a slotted dispensing shaft that is pressed upwardly against the bias of a spring into the small pieces to dispense them through the shaft." This reference clearly teaches a shaft, a confectionery (lollipop), an actuator (pressed upwardly), and a spring bias that opposes the upward movement.

• US 5,531,318 A (Coleman et al.): As discussed above, this patent shows a "housing for replaceable hard candy with a split cap or top that is spring biased to close once the candy is manually retracted." This reference provides the concept of hinged covers and their closure by a spring.

Motivation for Combination:
A PHOSITA, seeking to improve the convenience of the confectionery device in US 5,913,453 A, would be motivated to incorporate a covering mechanism. Given the teaching in US 5,531,318 A of a split cap (hinged covers) that can be spring-biased to close, it would be obvious to adapt this covering mechanism to the retractable lollipop dispenser of US 5,913,453 A. The challenge would be to synchronize the cover closure with the retraction of the shaft. A PHOSITA would readily understand that a flange on the shaft (as described in US 8524300) could interact with tabs on the hinged covers to achieve this synchronized opening and closing action. The concept of using a flange or disc on a retractable shaft to actuate a covering mechanism is a known mechanical principle (e.g., in lipstick tubes or other dispensers).

The combined system would feature:

• A housing.
• Hinged covers (from '318).
• A shaft carrying a confectionery (from '453).
• An actuator (from '453).
• A spring urging the shaft into a retracted position (from '453, or modified to achieve automatic retraction).
• A flange on the shaft that engages tabs on the covers to close them when retracted (a predictable mechanical adaptation).

This combination would lead to a device substantially falling under the scope of Claims 1, 8, and 12 by integrating hinged covers and an automatic closure mechanism with an existing spring-biased retractable confectionery.

Considerations for Claims 8 and 12 (Specific Spring Biasing)

Claims 8 and 12 of US 8524300 specify the direction of spring compression: Claim 8 states the spring is "pushed into compression," while Claim 12 states it is "pulled into compression" (i.e., stretched). The general concept of using a spring to provide a bias for automatic retraction is common in mechanical arts. A PHOSITA would understand that springs can be configured to operate in either compression or tension (pulling into compression). The choice between a compression spring (pushed) and an extension spring (pulled into compression/stretched) would be a matter of routine engineering design based on the available space, desired force, and mechanical linkages, and would not represent an inventive step.

For example, if the primary reference (e.g., Coleman et al. '318) uses a spring, adapting it to be either pushed into compression (as in a coil spring under the shaft, as depicted in US 8524300's figures) or pulled into compression (as an elastic band or a spring configured for tension, as suggested as an alternative in the detailed description) would be a routine design choice for a PHOSITA.

Conclusion on Obviousness

While no single prior art reference appears to directly anticipate all elements of US 8524300, particularly the explicit combination of hinged covers, a flange for closing them, an external slideable actuator, and automatic retraction/closure via a bias, the individual components and the underlying mechanical principles are present in the cited prior art. A PHOSITA, motivated by the recognized need for automatic closure and retraction in confectionery devices, would find it obvious to combine these known elements in a predictable manner. The problem of manually covering confectioneries was known in the art, and solutions for automatic retraction (from pens and dispensers) and spring-biased closures (from other candy holders) existed. Therefore, combining these known elements to achieve the desired automatic retraction and closure would likely be deemed obvious to a PHOSITA.

For US patent 8524300, here's a breakdown of its term adjustments, family members, and projected expiration:

Patent Term Adjustment (PTA) and Patent Term Extension (PTE):
Based on the provided information, the patent document for US8524300 does not explicitly detail any Patent Term Adjustment (PTA) or Patent Term Extension (PTE) calculations. PTA is granted to compensate for delays by the USPTO during patent prosecution, while PTE is available for patents on certain products (like human drugs, medical devices, food additives) to restore patent term lost during premarket regulatory review. Since US8524300 relates to a "covered retracted confectionery," it is highly unlikely to be eligible for PTE, which is typically reserved for regulated products requiring FDA approval. To determine any specific PTA granted, one would typically need to review the patent's prosecution history (file wrapper) available through USPTO Patent Center.

Continuation and Divisional Applications:
The patent document lists US13/463,762 as the application number for US8524300. It also shows a "Priority to US13/463,762" and a "Priority to CN2013200258993U." The US application number US13/463,762 is the filing for US8524300 itself, not a parent or child application in a continuation or divisional chain. The Chinese application CN2013200258993U (which published as CN203173166U) is a priority application, indicating that US8524300 claims priority to it, or it claims priority to US13/463,762. There is no information within the provided patent text to suggest that US8524300 is a continuation, divisional, or continuation-in-part of an earlier US application.

Related Family Members:

• US Priority Application: US13/463,762 (This is the application that matured into US8524300B1).
• Foreign Priority Application: CN2013200258993U (Published as CN203173166U, titled "Retractable candy cover"). This Chinese patent appears to be a related family member, claiming priority from or providing priority to the US application.

Projected Expiration Date:
The patent document explicitly states the "Anticipated expiration" date for US8524300 as 2032-05-03. This date is typically calculated as 20 years from the earliest effective filing date, plus any Patent Term Adjustment (PTA). The filing date for US13/463,762 (which resulted in US8524300) was 2012-05-03. Therefore, the 20-year term from the filing date would be 2032-05-03, suggesting that any PTA applied would have been minimal or accounted for in this listed expiration date.

Defensive Disclosure Document for US Patent 8524300 - Covered Retracted Confectionery

This document outlines derivative variations and extensions of the invention described in US Patent 8524300, aiming to establish comprehensive prior art that could render future incremental improvements by competitors obvious or non-novel. The derivations focus on the core claims, specifically independent Claims 1, 8, and 12, covering a broad spectrum of technical modifications and applications.

Derivatives of Core Claim 1

Claim 1: A covered retracted confectionery comprising: a housing having an interior and an exterior as well as a top and a bottom; covers hinged adjacent the top of the housing for movement between closed and open positions; each of the covers having a lower tab projecting inwardly toward the center of the housing; a shaft having a top and a bottom; the shaft mounted for movement between a retracted position and an extended position with respect to the housing; a confectionery carried adjacent the top of the shaft; a flange adjacent the top of the shaft below the confectionery; the flange engaging the plates of the hinged covers to close the covers when the shaft is retracted; an actuator slideably mounted on the exterior of the housing to move the shafted from the retracted position to the extended position; and a bias urging the shaft and the confectionery into the retracted position below the closed hinged covers; and the bias is positioned to be increased when the actuator moves the shaft from the retracted position to the extended position.

1. Material & Component Substitution

Derivative 1.1: Magnetic Biasing and Living Hinges

• Enabling Description: The conventional coil spring bias is replaced with a magnetic biasing system. This comprises a ferromagnetic element integrated into the base of the shaft and a fixed annular rare-earth magnet (e.g., Neodymium N42) embedded within the housing's bottom interior wall, configured for repulsive interaction when the shaft is extended. The magnetic force inherently increases as the shaft is extended due to decreasing distance, providing the necessary bias for retraction. The hinged covers are fabricated from a thermoplastic elastomer (TPE) or polypropylene (PP) with integrally molded living hinges, eliminating separate hinge pins and allowing for high cycle flexibility and reduced part count. The flange on the shaft, molded from a high-impact polystyrene (HIPS), engages the tabs of the TPE covers, which are formed with complementary internal abutment surfaces.
• Combination Prior Art: Integration with the Open-Source Hardware (OSH) movement's common design principles for snap-fit components, enabling magnetic biasing elements as standard modular units.
• Mermaid Diagram:

  flowchart TD
      A[Housing (HIPS)] --> B{Magnetic Base (Ferromagnetic Insert)}
      B --> C{Rare-Earth Magnet (N42 Neodymium)}
      C -- Repulsive Force --> D[Shaft (HIPS)]
      D -- Extends/Retracts --> E[Confectionery]
      D -- Flange Abutment --> F[TPE Cover (Living Hinge)]
      F -- Auto-Closes --> G[Retracted State]
      H[Actuator (Slideable)] -- Moves Shaft --> D
  

Derivative 1.2: Viscoelastic Polymer Bias and Rotary Actuator

• Enabling Description: The bias is provided by a pre-tensioned viscoelastic polymer cord (e.g., braided silicone elastomer or polyurethane) anchored between the bottom of the shaft and the interior bottom of the housing. This polymer stores elastic potential energy upon stretching during shaft extension, automatically retracting the shaft upon release. The covers are made of transparent polycarbonate (PC) with micro-hinges that are laser-ablated into the material for precise, low-friction articulation. The slideable actuator is replaced by a rotary actuator knob on the housing's exterior. Rotation of the knob drives a lead screw mechanism that translates rotational motion into linear displacement of the shaft, extending or retracting the confectionery.
• Combination Prior Art: Utilizes standard viscoelastic material property definitions from ASTM D4065-12 for consistent performance in consumer devices.
• Mermaid Diagram:

  graph TD
      A[Housing (PC)] --> B[Rotary Actuator Knob]
      B -- Drives --> C[Lead Screw Mechanism]
      C -- Translates Linear Motion --> D[Shaft (Acetal)]
      D -- Pre-tensioned --> E[Viscoelastic Polymer Cord]
      E -- Retracts Shaft --> F[Confectionery]
      D -- Flange Interaction --> G[PC Covers (Micro-Hinges)]
      G -- Automatic Closure --> H[Retracted Position]
  

Derivative 1.3: Pneumatic Bias and Micro-Lever Actuator

• Enabling Description: The bias is generated by a miniaturized pneumatic cylinder integrated at the base of the housing, with its piston rod coupled to the bottom of the shaft. Upon activation, the actuator releases compressed air into the cylinder, extending the shaft. A vacuum or controlled depressurization system creates the retraction force, or a return spring within the cylinder provides the bias, compressed by the air pressure. Alternatively, the pneumatic cylinder itself is evacuated to create suction, pulling the shaft into the retracted position, and positive pressure extends it. The covers are constructed from an anodized aluminum alloy (e.g., 6061-T6) with integrated precision-machined pivot points. The actuator is a compact, tactile micro-lever embedded in the housing side, which, when pressed, operates a micro-valve to control air flow.
• Combination Prior Art: Pneumatic components adhering to ISO 5599-1:2008 standards for valve and cylinder interfaces for compact modular designs.
• Mermaid Diagram:

  stateDiagram-v2
      [*] --> Retracted
      Retracted --> Actuator_Pressed: Micro-Lever Actuation
      Actuator_Pressed --> Extending: Air Pressure to Pneumatic Cylinder
      Extending --> Extended: Shaft reaches max extension
      Extended --> Actuator_Released: Micro-Lever Release
      Actuator_Released --> Retracting: Vacuum/Spring Bias in Cylinder
      Retracting --> Retracted: Covers Close Automatically
  

2. Operational Parameter Expansion

Derivative 2.1: Micro-Scale Confectionery Dispenser for Nutraceuticals

• Enabling Description: A miniaturized version of the retractable mechanism, scaled down for dispensing individual nutraceutical tablets, micro-lozenges, or highly concentrated powdered supplements. The housing dimensions are reduced to approximately 10 mm diameter and 30 mm length. The shaft, flange, and covers are fabricated using micro-injection molding techniques from medical-grade polypropylene (USP Class VI compliant). The bias is provided by a micro-torsion spring integrated into the hinge mechanism of the covers, which applies a closing force, while a micro-coil spring (0.5 mm wire diameter) under the shaft facilitates retraction. The actuator is a miniature slide button requiring precise finger manipulation.
• Combination Prior Art: Utilizes design principles from ISO 11040-4:2015 (pre-filled syringes) for aseptic handling and sterile packaging of pharmaceutical dosage forms.
• Mermaid Diagram:

  graph LR
      A[Miniature Housing] --> B[Micro-Confectionery/Nutraceutical]
      A --> C[Micro-Covers (Medical-Grade PP)]
      C -- Micro-Torsion Spring Bias --> D[Closed Position]
      E[Micro-Shaft] -- Flange Engagement --> C
      F[Micro-Slide Actuator] -- Moves E --> B
      B -- Retracts via Micro-Coil Spring --> D
  

Derivative 2.2: Industrial-Scale Modular Ingredient Dispenser

• Enabling Description: The system is scaled for industrial applications, functioning as a modular dispenser for bulk ingredients or components (e.g., food processing, small parts assembly). The housing is a robust stainless steel module (e.g., 316L) with dimensions of 500 mm x 200 mm x 200 mm. The "confectionery" is replaced by a large, replaceable ingredient cartridge (e.g., 5 kg granular additive). The shaft is a heavy-duty electromechanical linear actuator with a precision-machined flange, designed to interface with automated, pneumatically-actuated clamshell covers also made of stainless steel. The bias for retraction is provided by a powerful pneumatic cylinder, ensuring rapid and repeatable cycle times. The actuator is integrated into a programmable logic controller (PLC) system, allowing for automated dispensing operations based on process parameters.
• Combination Prior Art: Interoperability with IEC 61131-3 (PLC programming languages) for industrial automation and control.
• Mermaid Diagram:

  flowchart LR
      A[Industrial Housing (316L SS)] --> B(Modular Ingredient Cartridge)
      A --> C[Electromechanical Linear Actuator]
      C -- Flange Interface --> D[Pneumatic Clamshell Covers (SS)]
      D -- Automated Close --> E[Secured Position]
      F[PLC System] -- Actuates C --> B
      C -- Retracts via High-Force Pneumatic Cylinder --> E
  

3. Cross-Domain Application

Derivative 3.1: Medical Sterile Applicator for Topical Ointments

• Enabling Description: This derivative transforms the confectionery dispenser into a sterile applicator for topical medical ointments, gels, or diagnostic reagents. The "confectionery" becomes a replaceable, sterilized applicator head (e.g., a sponge, brush, or fine-tip nozzle) pre-loaded with the medicinal substance or designed to hold it. The housing is made of medical-grade autoclavable polysulfone or HDPE, designed for single-patient use or multi-use after sterilization. The covers provide an aseptic enclosure for the applicator head. The actuator is a thumb-slide, designed for single-hand operation, and the bias ensures immediate retraction and sterile closure after each application, preventing contamination.
• Combination Prior Art: Designed for compatibility with ISO 11607 (packaging for terminally sterilized medical devices) and common medical device sterilization protocols.
• Mermaid Diagram:

  sequenceDiagram
      User->Device: Grasp Housing
      User->Device: Slide Actuator Up (Expose)
      Device->Applicator_Head: Extend (Break Sterile Seal)
      User->Patient: Apply Ointment
      User->Device: Release Actuator
      Device->Applicator_Head: Retract
      Device->Covers: Close (Re-establish Sterile Enclosure)
  

Derivative 3.2: Precision Seed Planter for AgTech

• Enabling Description: Adapting the mechanism for precision planting of individual seeds or micro-pellets of fertilizer in agricultural technology. The "confectionery" is a single seed or a small aggregate of nutrient pellets. The housing is constructed from UV-stabilized, high-density polyethylene (HDPE) or a composite material suitable for outdoor agricultural environments. The covers protect the seed from wind, moisture, and pests until deployment. The shaft positions the seed at a precise depth. The actuator is an electronic solenoid or a mechanical trigger linked to automated planting machinery, with the bias ensuring rapid retraction and cover closure to prepare for the next seed drop. Integrated sensors confirm seed deployment.
• Combination Prior Art: Interfacing with ISOBUS (ISO 11783) agricultural communication standard for data exchange between tractor and implement.
• Mermaid Diagram:

  flowchart TD
      A[AgTech Housing (HDPE)] --> B(Seed/Pellet Reservoir)
      B --> C[Single Seed Dispensing Mechanism]
      C --> D[Shaft (Precision Depth Control)]
      D -- Flange --> E[Protective Covers (HDPE)]
      E -- Soil Contact Sensor --> F{Seed Planted?}
      F -- Yes --> G[Electronic Solenoid Actuator]
      G -- Activates D --> C
      G -- Triggers Retraction --> E
      H[Automated Planter Control] -- Command --> G
  

4. Integration with Emerging Tech

Derivative 4.1: Smart Confectionery Dispenser with IoT Monitoring & AI Optimization

• Enabling Description: The confectionery dispenser integrates IoT capabilities for real-time monitoring and AI-driven optimization of user experience and inventory. A miniature load cell is integrated under the confectionery attachment point to estimate remaining candy volume. Environmental sensors (temperature, humidity) are embedded within the housing. Data from these sensors, along with actuator usage patterns (frequency, speed, duration), are transmitted via Bluetooth Low Energy (BLE) to a connected smart device or cloud platform. An on-board microcontroller (e.g., ARM Cortex-M0) performs local processing. An AI algorithm in the cloud analyzes user habits, environmental data, and expiration dates to suggest optimal consumption times, reordering, or provide haptic feedback (e.g., a vibration in the actuator) if the confectionery is nearing spoilage or low stock. The actuator is touch-sensitive, responding to gestures.
• Combination Prior Art: Communication leveraging Bluetooth Low Energy (BLE) Generic Access Profile (GAP) and Generic Attribute Profile (GATT) for standardized data exchange with smart devices.
• Mermaid Diagram:

  graph LR
      User -- Interact --> Actuator(Touch-Sensitive Actuator)
      Actuator -- Signals --> Microcontroller(Microcontroller)
      Microcontroller -- Commands --> Shaft_Mechanism(Shaft & Covers)
      Shaft_Mechanism -- Dispenses/Retracts --> Confectionery(Confectionery)
      SubGraph Sensors
          Load_Cell(Load Cell)
          Temp_Hum_Sensor(Temp/Humidity Sensor)
      End
      Sensors -- Data --> Microcontroller
      Microcontroller -- BLE --> Cloud_AI(Cloud AI Platform)
      Cloud_AI -- Analysis/Feedback --> User_App(User Mobile App)
      Cloud_AI -- Reorder/Alert --> Manufacturer_System(Manufacturer System)
  

Derivative 4.2: Blockchain-Enabled Supply Chain & Authenticity Verification

• Enabling Description: Each confectionery dispenser is equipped with a Near Field Communication (NFC) tag and a unique, cryptographically generated identifier (e.g., a public key). This identifier is linked to a non-fungible token (NFT) on a blockchain, representing the specific confectionery batch and its entire supply chain history (ingredients, manufacturing date, location, quality control data, expiration). Users can tap their NFC-enabled smartphone to the dispenser to instantly verify the authenticity, origin, and freshness of the confectionery, recorded on a distributed ledger. The actuator's state (extended/retracted) can be timestamped and recorded locally on the device (with selective upload consent) to provide anonymized usage data for market research, secured by cryptographic hashes. The housing is tamper-resistant.
• Combination Prior Art: Utilization of ERC-721 or ERC-1155 NFT standards on a public blockchain (e.g., Ethereum or Polygon) for digital asset representation.
• Mermaid Diagram:

  flowchart TD
      Manufacturer -- Records Batch Data --> Blockchain(Blockchain Ledger)
      Blockchain -- Generates NFT --> NFC_Tag(NFC Tag on Dispenser)
      NFC_Tag -- Contains Unique ID --> Dispenser(Covered Retracted Confectionery)
      User_Phone(User Smartphone) -- NFC Scan --> Dispenser
      Dispenser -- Sends ID --> Blockchain
      Blockchain -- Returns Data --> User_Phone
      User_Phone -- Displays --> Authenticity_Info(Authenticity/Supply Chain Info)
      Dispenser -- Optional: Timestamp Usage --> Blockchain
  

5. The "Inverse" or Failure Mode

Derivative 5.1: Fail-Safe Auto-Retraction on Environmental Anomaly

• Enabling Description: The device is equipped with environmental sensors (e.g., thermistor for temperature, capacitive sensor for humidity) and an accelerometer. If the internal temperature exceeds a pre-defined threshold (e.g., 30°C for chocolate to prevent melting and mess) or if a sudden impact is detected (device dropped), the integrated microcontroller automatically triggers an immediate, accelerated retraction of the shaft and positive closure of the covers, overriding any active extension. This fail-safe mechanism uses a high-tension spring or an electromagnetically triggered latch release for rapid action. The housing materials are impact-resistant polycarbonate.
• Combination Prior Art: Sensor integration following IPC-A-610G (Acceptability of Electronic Assemblies) for robust sensor placement and reliability.
• Mermaid Diagram:

  stateDiagram-v2
      [*] --> Idle
      Idle --> Extended: Actuator Pressed
      Extended --> Retracted: Actuator Released
      Extended --> Emergency_Retract: Temp_Sensor > Threshold
      Extended --> Emergency_Retract: Accelerometer > Impact Threshold
      Emergency_Retract --> Retracted: High-Tension Spring/Latch Release
      Retracted --> Fail_Safe_Mode: Covers Sealed, Alarm Triggered
  

Derivatives of Core Claim 8

Claim 8: A covered retracted confectionery comprising: a housing having an interior and an exterior as well as a top and a bottom; covers hinged adjacent the top of the housing for movement between closed and open positions; each of the covers having a lower tab projecting inwardly toward the center of the housing; a shaft having a top and a bottom; the shaft mounted for movement between a retracted position and an extended position with respect to the housing; a confectionery carried adjacent the top of the shaft; a flange adjacent the top of the shaft below the confectionery; the flange engaging the plates of the hinged covers to close the covers when the shaft is retracted; an actuator slideably mounted on the exterior of the housing to move the shaft from the retracted position to the extended position; a spring urging the shaft and the confectionery into the retracted position below the closed hinged covers; and the spring is positioned to be pushed into compression when the actuator moves the shafted from the retracted position to the extended position.

1. Material & Component Substitution (Focus on Spring being Pushed into Compression)

Derivative 8.1: Compression Leaf Spring Array

• Enabling Description: Instead of a single coil spring, the bias is provided by an array of parallel compression leaf springs (e.g., made from spring steel or high-strength polymer composites like carbon fiber reinforced PEEK). These leaf springs are mounted vertically within the housing, engaging the bottom of the shaft or an integrated plate on the shaft, and are pushed into compression as the shaft is extended. The collective force of the array provides the necessary bias. The covers are made of a transparent copolyester (e.g., Tritan™) with snap-fit living hinges for repeated opening and closing cycles.
• Combination Prior Art: Utilizing standardized material properties for leaf springs from SAE J112 (Leaf Spring Specification).
• Mermaid Diagram:

  graph TD
      A[Housing (ABS)] --> B[Shaft (Polypropylene)]
      B -- Pushed Against --> C[Leaf Spring Array (Spring Steel)]
      C -- Compresses When Shaft Extends --> D[Stored Energy]
      D -- Releases to Retract --> B
      B -- Flange Engages --> E[Copolyester Covers (Living Hinge)]
      E -- Closes --> F[Retracted State]
      G[Slide Actuator] -- Moves --> B
  

Derivative 8.2: Die Spring (Heavy Duty Compression)

• Enabling Description: The biasing element is a high-force die spring (e.g., rectangular wire, chrome alloy steel, ISO 10243 compliant) positioned concentrically around the lower portion of the shaft, below an internal wall in the housing. This robust compression spring is designed for high deflection and load, making it suitable for larger or heavier confectionery items, or for applications requiring greater retraction force. The actuator is a reinforced ergonomic thumb-slide. The housing and shaft are constructed from impact-resistant Nylon 6/6.
• Combination Prior Art: Specifies use of die springs compliant with ISO 10243 for predictable and durable spring performance.
• Mermaid Diagram:

  flowchart TD
      A[Nylon Housing] --> B[Internal Wall]
      B -- Supports --> C[Die Spring (ISO 10243)]
      C -- Concentric to --> D[Nylon Shaft]
      D -- Moves Up --> C -- Pushed into Compression --> E[Stored Potential Energy]
      E -- Releases --> D -- Retracts --> F[Confectionery]
      D -- Flange --> G[Covers]
      G -- Close --> H[Retracted Position]
      I[Thumb-Slide Actuator] -- Moves --> D
  

2. Operational Parameter Expansion (Focus on Spring being Pushed into Compression)

Derivative 8.3: Cryogenic Retractor for Frozen Specimens

• Enabling Description: This variation is designed for environments requiring cryogenic temperatures (e.g., -80°C to -196°C) for handling frozen biological specimens or specialized cryo-confectioneries. The housing, shaft, and covers are manufactured from cryogenically compatible materials such as specific grades of stainless steel (e.g., 304L or 316L) or specialized low-temperature polymers (e.g., PTFE, PEEK). The spring is a custom-wound compression spring made from a cryogenically stable alloy (e.g., Elgiloy or MP35N), ensuring consistent spring force at extreme low temperatures. The actuator is designed for gloved operation. The system includes a vacuum-sealed jacket to maintain temperature.
• Combination Prior Art: Material and design principles informed by ASTM E1450/E1450M-16 (Standard Test Method for Cryogenic Pumping Systems).
• Mermaid Diagram:

  graph LR
      A[Cryo-Housing (SS316L)] --> B[Frozen Specimen/Confectionery]
      A --> C[Cryo-Covers (SS316L)]
      C -- Elgiloy Compression Spring --> D[Closed Position (Cryo)]
      E[Cryo-Shaft (SS316L)] -- Flange Engagement --> C
      F[Gloved Actuator (External)] -- Moves E --> B
      B -- Retracts via Elgiloy Spring --> D
      A -- Vacuum-Sealed --> G(Cryogenic Environment)
  

3. Cross-Domain Application (Focus on Spring being Pushed into Compression)

Derivative 8.4: Veterinary Pill Dispenser with Child-Resistant Actuator

• Enabling Description: A specialized pill dispenser for veterinary use, designed to administer medication to animals while protecting the pill from slobber or re-ingestion. The "confectionery" is a veterinary pill. The housing is chew-resistant ABS, textured for grip. The covers are designed for rapid, positive closure upon retraction. The spring is a robust compression coil spring, selected to provide a strong enough bias to ensure reliable retraction even if the mechanism encounters resistance (e.g., a partially chewed tab). The actuator incorporates a child-resistant and pet-resistant dual-action mechanism (e.g., press-and-slide) to prevent accidental exposure of medication.
• Combination Prior Art: Child-resistant packaging standards per 16 CFR Part 1700 adapted for veterinary medication safety.
• Mermaid Diagram:

  flowchart TD
      A[Chew-Resistant Housing] --> B(Veterinary Pill)
      A --> C[Covers (Robust Hinges)]
      C -- Strong Compression Spring --> D[Closed/Protected]
      E[Shaft] -- Flange --> C
      F[Child/Pet-Resistant Actuator] -- Moves E --> B
      B -- Retracts via Spring --> D
  

4. Integration with Emerging Tech (Focus on Spring being Pushed into Compression)

Derivative 8.5: Automated Retail Dispenser with Predictive Maintenance

• Enabling Description: An automated vending or retail dispenser module where the confectionery is dispensed from an internal magazine. The retraction mechanism for the confectionery presentation tray (the "shaft") and its covers is actuated by a servo motor. The compression spring, typically a heavy-duty coil spring, acts as a fail-safe mechanical bias, ensuring retraction in case of power loss or motor failure. The spring's operational life is monitored by a proximity sensor detecting its full compression and extension cycles. This data, alongside motor current draw and actuation speed, is fed into an onboard diagnostic unit running a machine learning model for predictive maintenance, alerting operators to potential spring fatigue or mechanical wear before failure.
• Combination Prior Art: Data communication over OPC UA (Open Platform Communications Unified Architecture) for industrial automation and data exchange with SCADA/MES systems.
• Mermaid Diagram:

  sequenceDiagram
      Operator->Dispenser: Request Item
      Dispenser->Servo_Motor: Actuate Extension
      Servo_Motor->Tray: Extend (Compress Spring)
      Proximity_Sensor->Diagnostic_Unit: Record Spring Cycle
      Tray->Covers: Open
      Tray->Customer: Dispense Confectionery
      Customer->Dispenser: Item Taken
      Dispenser->Servo_Motor: Actuate Retraction
      Servo_Motor->Tray: Retract (Spring Assisted/Fail-safe)
      Tray->Covers: Close
      Diagnostic_Unit->Predictive_Maintenance_ML: Analyze Data
      Predictive_Maintenance_ML->Operator: Alert (Spring Fatigue)
  

Derivatives of Core Claim 12

Claim 12: A covered retracted confectionery comprising: a housing having an interior and an exterior as well as a top and a bottom; covers hinged adjacent the top of the housing for movement between closed and open positions; each of the covers having a lower tab projecting inwardly toward the center of the housing; a shaft having a top and a bottom; the shaft mounted for movement between a retracted position and an extended position with respect to the housing; a confectionery carried adjacent the top of the shaft; a flange adjacent the top of the shaft below the confectionery; the flange engaging the plates of the hinged covers to dose the covers when the shaft is retracted; an actuator slideably mounted on the exterior of the housing to move the shaft from the retracted position to the extended position; a spring urging the shaft and the confectionery into the retracted position below the closed hinged covers; and the spring is positioned to be pulled into compression when the actuator moves the shafted from the retracted position to the extended position.

1. Material & Component Substitution (Focus on Spring being Pulled into Compression)

Derivative 12.1: Multi-Strand Elastic Cord Bias

• Enabling Description: The spring bias is implemented as a braided multi-strand elastic cord (e.g., latex-free synthetic rubber or polyurethane) connected between the top of the shaft (or the underside of the flange) and the interior top of the housing. When the shaft is moved to the extended position by the actuator, the cord is stretched (pulled into compression), storing elastic potential energy. Upon release, the contraction of the cord pulls the shaft back into the retracted position. The covers are made of a flexible, impact-resistant thermoplastic polyurethane (TPU) with integral hinge structures, providing a soft-touch exterior.
• Combination Prior Art: Elastic cord properties defined by ASTM D4347 (Standard Test Method for Load-Extension Properties of Elastic Fabrics).
• Mermaid Diagram:

  graph TD
      A[Housing (ABS)] --> B[Shaft (Polypropylene)]
      B -- Connected to --> C[Multi-Strand Elastic Cord]
      C -- Stretched (Pulled into Compression) --> D[Stored Energy]
      D -- Retracts Shaft --> B
      B -- Flange Engages --> E[TPU Covers (Integral Hinge)]
      E -- Closes --> F[Retracted State]
      G[Slide Actuator] -- Moves --> B
  

Derivative 12.2: Torsion Spring for Shaft and Covers

• Enabling Description: A single, centrally located torsion spring (e.g., stainless steel music wire) provides the bias. This spring is mounted coaxial with the shaft's linear movement axis. One end of the torsion spring is fixed to the housing, and the other end is coupled to the shaft such that linear extension of the shaft causes rotational winding of the spring, increasing its stored energy (pulled into compression if viewed as a stretching/winding action). This stored energy then unwinds to retract the shaft. Additionally, smaller torsion springs are integrated into the hinge mechanism of each cover, independently urging them closed. The actuator is a textured finger tab for tactile feedback.
• Combination Prior Art: Torsion spring design following ASTM A229 (Standard Specification for Steel Wire, Cold-Drawn for Mechanical Springs).
• Mermaid Diagram:

  stateDiagram-v2
      [*] --> Retracted
      Retracted --> Actuator_Pressed: Finger Tab
      Actuator_Pressed --> Shaft_Extends: Coaxial Torsion Spring Winding
      Shaft_Extends --> Covers_Open: Flange Interaction
      Covers_Open --> Extended: Confectionery Exposed
      Extended --> Actuator_Released: Finger Tab Released
      Actuator_Released --> Shaft_Retracts: Torsion Spring Unwinding
      Shaft_Retracts --> Covers_Close: Integrated Hinge Torsion Springs
      Covers_Close --> Retracted: Fully Closed
  

2. Operational Parameter Expansion (Focus on Spring being Pulled into Compression)

Derivative 12.3: High-Frequency Cycle Testing Fixture

• Enabling Description: This variation repurposes the device as a high-frequency endurance testing fixture for miniature components. The "confectionery" is replaced by a test component. The housing is robust, bolted to a test bench. The shaft is driven by a high-speed linear voice coil motor (VCM), capable of thousands of cycles per minute. The bias is provided by a high-fatigue-resistance extension spring (e.g., chrome vanadium steel), specifically designed to withstand rapid and continuous stretching and contraction cycles. The covers are actuated rapidly by pneumatic cylinders linked to the VCM's motion, ensuring synchronized opening and closing for automated testing.
• Combination Prior Art: Test setup control via SCPI (Standard Commands for Programmable Instruments) for automated test equipment.
• Mermaid Diagram:

  flowchart TD
      A[Test Fixture Housing] --> B(Linear Voice Coil Motor)
      B -- Drives High-Speed --> C[Shaft (Test Component Holder)]
      C -- Stretches --> D[High-Fatigue Extension Spring]
      D -- Provides Retraction Bias --> C
      C -- Actuates --> E[Pneumatic Covers]
      E -- Fast Open/Close --> F[Test Cycle]
      G[Test Controller (SCPI)] -- Controls --> B
  

3. Cross-Domain Application (Focus on Spring being Pulled into Compression)

Derivative 12.4: Submersible Bait Dispenser for Marine Research

• Enabling Description: A submersible bait dispenser for marine biology research or recreational fishing. The housing is a pressure-rated, corrosion-resistant titanium alloy (e.g., Ti-6Al-4V) cylinder. The "confectionery" is a biodegradable bait pellet. The covers are watertight, magnetically latched, and hinged to withstand hydrostatic pressure at depths up to 500 meters. The shaft is extended by an internal, battery-powered linear actuator (e.g., a stepper motor with lead screw). The retraction bias is provided by multiple pre-stretched, saltwater-resistant elastic bands (e.g., highly resistant silicone or polyurethane), configured to be pulled further into compression during extension, ensuring positive retraction and watertight closure under pressure upon release.
• Combination Prior Art: Watertight enclosures adhering to NEMA 250 Type 6P (Enclosures for Submersible Applications).
• Mermaid Diagram:

  graph TD
      A[Titanium Housing (500m Rated)] --> B(Bait Pellet)
      A --> C[Watertight Magnetic Covers]
      C -- Saltwater-Resistant Elastic Bands --> D[Sealed Submerged]
      E[Shaft (Linear Actuator Driven)] -- Flange Engagement --> C
      F[Internal Battery/Controller] -- Commands --> E
      B -- Retracts via Elastic Bands --> D
  

4. Integration with Emerging Tech (Focus on Spring being Pulled into Compression)

Derivative 12.5: Augmented Reality (AR) Enhanced Interaction Dispenser

• Enabling Description: This derivative integrates Augmented Reality (AR) with the confectionery dispenser. The actuator includes an embedded marker (e.g., an ARKit/ARCore compatible fiducial marker) on its surface. When a user points an AR-enabled smartphone or headset at the dispenser, the AR application overlays interactive digital content directly onto the physical device – such as a 3D animated character that "eats" the confectionery when the shaft is extended, or visual cues for remaining confectionery count. The retraction spring is an extension spring. The AR application can also provide contextual information or gamified interactions based on the dispenser's state (open/closed, retracted/extended), sensed by miniature optical encoders on the shaft.
• Combination Prior Art: AR marker detection and tracking utilizing OpenCV library for computer vision processing.
• Mermaid Diagram:

  sequenceDiagram
      User->AR_Device: Point at Dispenser
      AR_Device->Optical_Encoder: Read Shaft Position
      Optical_Encoder->AR_App: Send Position Data
      AR_App->AR_Device: Overlay Digital Content
      User->Dispenser: Slide Actuator (Extend)
      Dispenser->Shaft_Mechanism: Extend (Stretch Spring)
      AR_App->AR_Device: Update AR Content (e.g., animation)
      User->Dispenser: Release Actuator
      Dispenser->Shaft_Mechanism: Retract (Spring Contracts)
      AR_App->AR_Device: Update AR Content (e.g., animation)