Prior art — US Patent 12529538

Here is an analysis of the most relevant prior art for US Patent 12529538, based on the citations provided within the patent document itself. For patents where a detailed description was not readily available through targeted search queries, it is noted that a comprehensive anticipation assessment would require reviewing their full text.

Most Relevant Prior Art for US Patent 12529538

1. US2056975A - Machine-gun and converter therefor

Full Citation: US2056975A, Inventor: Charles J. Michal Jr., Assignee: Not specified in snippet.
Publication/Filing Date: Filed March 1, 1934; Patented October 13, 1936.
Brief Description: This patent describes mechanisms for converting firearms into machine guns or accelerating the firing rate of semi-automatic firearms. It details a system where the recoil of a "slide" cocks the hammer, and a pivoted element with projections engages the slide and the trigger. This moves the trigger forward against finger pressure after firing, holds it during recoil and counter-recoil, and then releases it for continuous firing under sustained pressure.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): The fundamental concept of using the firearm's reciprocating action (e.g., "slide") to reset or manipulate the "trigger" for an accelerated firing rate shares functional similarities with US12529538's "second mode" (active reset). The use of a "pivoted element" engaging both the "slide" and the "trigger" could be broadly considered analogous to the lever-cam selector-trigger interaction in US12529538. However, US2056975A does not explicitly detail a "cam selector" with specific "first and second recesses," a "longitudinal slot," or a system for selecting between three distinct operational "modes" (semi-automatic, active reset, and safe) using specific cam profiles and detent tracks as claimed in US12529538.

2. US6389728B1 - Personal firearm safety mechanism

Full Citation: US6389728B1, Inventor: Gregory Warren Lundy, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 1999-12-17; Publication date: 2002-05-21.
Brief Description: A detailed description or abstract was not readily available through general search queries.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate.

3. US7398723B1 - Trigger forward displacement system and method

Full Citation: US7398723B1, Inventor: Brian A. Blakley, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2003-04-25; Publication date: 2008-07-15.
Brief Description: This patent focuses on accelerating the cyclic firing rate of semi-automatic firearms by mechanically resetting the trigger to its forward, ready-to-fire position using the reciprocating action of the firearm (e.g., bolt carrier). It describes a "pivoting cam" that is contacted by the bolt carrier, which then presses down on a "trigger-extension" to force the trigger into the reset position.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): The core concept of a trigger mechanism that is "reset" by the firearm's reciprocating action, utilizing a "pivoting cam" to act on a "trigger-extension" to force the trigger into a ready position, directly anticipates the functional aspect of the "second mode" (active reset) of US12529538. The cam's action on the trigger tail for resetting is functionally similar. However, US7398723B1 does not explicitly detail a "cam selector" operating between three distinct modes (semi-automatic, active reset, safe), nor the specific detent-track mechanism for mode selection, or the precise lever-cam selector interaction with a longitudinal slot and dovetail portion as claimed in US12529538.

4. US9823032B2 - Apparatus for firearm safety

Full Citation: US9823032B2, Inventor: Robert M. Allan, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2014-03-04; Publication date: 2017-11-21.
Brief Description: A detailed description or abstract was not readily available through general search queries.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate.

5. US9939221B2 - Flex-fire G2 technology

Full Citation: US9939221B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2018-04-10.
Brief Description: This patent is part of the "Flex-fire technology" series, aiming to increase the rate of semi-automatic fire through a forced trigger reset. It describes rigid mechanical contact between the trigger member and the bolt as the action cycles to achieve this reset.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): The concept of a "forced reset trigger" mechanism that mechanically resets the trigger using the firearm's cycling action (e.g., "bolt") aligns with the functional purpose of the "second mode" (active reset) of US12529538. However, US9939221B2 does not disclose the specific cam selector with distinct recesses for multiple modes, a longitudinal slot for lever interaction, or the detent-track mechanism for mode selection as found in US12529538.

6. US9816772B2 - Flex-fire technology

Full Citation: US9816772B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2017-11-14.
Brief Description: This patent is another iteration of "Flex-fire technology," similar to US9939221B2, focused on forcefully resetting the trigger via rigid mechanical contact with the bolt as the firearm cycles to increase the semi-automatic rate of fire.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): Similar to US9939221B2, the mechanism of a "forced reset trigger" that uses the firearm's cycling action to mechanically reset the trigger partially anticipates the functional aspect of the "second mode" (active reset) of US12529538. The specific structural details of US12529538's cam selector, its multiple distinct modes, longitudinal slot, and detent-track mechanism are not disclosed.

7. US9568264B2 - Flex-fire technology

Full Citation: US9568264B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2017-02-14.
Brief Description: Also part of the "Flex-fire technology" family, this patent aims to enhance firing rate and precision by employing "reciprocating gun bolt driven trigger and integrated safety mechanisms." It mentions a "safety lock that engages a sear surface on a disconnector to prevent trigger depression." The trigger reset is achieved through rigid mechanical contact with the bolt during cycling.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): The "reciprocating gun bolt driven trigger" for a forced reset mechanism anticipates the functional aspect of the "second mode" (active reset) of US12529538. The "integrated safety mechanism" that prevents trigger depression broadly relates to the "third mode" (safe) of US12529538. However, the specific cam selector with its distinct recesses, longitudinal slot, and the detent-track mechanism for mode selection are not disclosed.
- Claim 3 (partially): The mention of a "safety lock that engages a sear surface on a disconnector to prevent trigger depression" indicates a safety function, but not the multi-mode detent-track system of US12529538 for selecting between semi-automatic, active reset, and safe positions via a cam selector.

8. US10514223B1 - Firearm trigger mechanism

Full Citation: US10514223B1, Assignee: Wolf Tactical Llc.
Publication/Filing Date: Priority date: 2017-09-29; Publication date: 2019-12-24.
Brief Description: This patent describes a semi-automatic trigger mechanism designed to increase the rate of fire, specifically for retrofitting into AR-pattern firearms. The trigger mechanism is "mechanically reset by movement of the hammer when it is reset by the bolt carrier."
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (partially): The core concept of a "semi-automatic trigger mechanism" that is "mechanically reset by movement of the hammer when it is reset by the bolt carrier" strongly anticipates the functional aspect of the "second mode" (active reset) of US12529538. The description of the trigger being mechanically reset by the hammer, which itself is reset by the bolt carrier, aligns with the active reset operation of US12529538. However, the specific structural details of US12529538's cam selector (e.g., shape, slot, recesses), lever (e.g., dovetail, bent portion), and the three distinct modes (semi-automatic, active reset, safe) selected by a detent-track mechanism are not explicitly described in the provided abstract.

9. US10989488B2 - Safety device for firearms and safety method for firearms

Full Citation: US10989488B2, Assignee: Rade Tecnologías, S.L.
Publication/Filing Date: Priority date: 2018-01-22; Publication date: 2021-04-27.
Brief Description: A detailed description or abstract was not readily available through general search queries.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title suggests relevance to safety mechanisms, potentially Claim 1 (third mode - safe).

10. US10466002B1 - Safety selector assemblies (Cited by examiner)

Full Citation: US10466002B1, Assignee: WHG Properties, LLC.
Publication/Filing Date: Priority date: 2018-10-15; Publication date: 2019-11-05.
Brief Description: A detailed description or abstract was not readily available through general search queries. Given that this patent relates to "Safety selector assemblies" and was cited by the examiner, it is highly likely to be very relevant.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. However, the title strongly suggests relevance to Claim 1 (cam selector, modes) and potentially Claim 3 (detent tracks for selection). A full review of this patent's text is crucial.

11. US20220178639A1 - Safety lock mechanisms for portable weapons, including crossbows and firearms, such as guns, rifles and alike

Full Citation: US20220178639A1, Inventor: Song Jiuhong, Assignee: Not specified in snippet.
Publication/Filing Date: Priority date: 2019-03-29; Publication date: 2022-06-09.
Brief Description: A detailed description or abstract was not readily available through general search queries.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title suggests general relevance to safety mechanisms, potentially Claim 1 (third mode - safe).

12. US11359878B2 - Trigger unit for a firearm

Full Citation: US11359878B2, Assignee: Benelli Armi S.P.A.
Publication/Filing Date: Priority date: 2019-06-04; Publication date: 2022-06-14.
Brief Description: A detailed description or abstract was not readily available through general search queries.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title indicates general relevance to firearm trigger mechanisms.

13. US11724003B2 - Firearm trigger mechanism

Full Citation: US11724003B2, Assignee: Abc Ip, Llc.
Publication/Filing Date: Priority date: 2022-01-10; Publication date: 2023-08-15.
Brief Description: A detailed description or abstract was not readily available through general search queries. As this patent shares the same assignee (ABC IP, LLC) as US12529538, it is highly likely to disclose related technology.
Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. However, given the assignee and title ("Firearm trigger mechanism"), it is highly likely to be relevant to Claim 1 and potentially other claims related to the trigger and its interaction with other components in different modes. A full review of this patent's text is crucial.

14. US12038247B2 - Firearm trigger mechanism

Full Citation: US12038247B2, Assignee: Abc Ip, Llc.
Publication/Filing Date: Priority date: 2022-09-08; Publication date: 2024-07-16.
Brief Description: This patent describes a semi-automatic trigger mechanism that is "selectively mechanically reset by movement of the bolt carrier." It features a "pivoting cam" that interacts with the bolt carrier to press down on a "trigger-extension," thereby forcing the trigger into a reset position. Crucially, it explicitly states that "a pivoting cam arrangement incorporates a three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes." This patent is from the same assignee as US12529538.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (substantially): The disclosure of a "three-position safety selector" providing "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" directly aligns with the first, second, and third modes of US12529538. The "pivoting cam arrangement" for resetting the trigger functionally anticipates the cam portion of the second recess moving the first trigger tail portion down. This patent is very strong prior art against Claim 1.
- Claim 3 (substantially): The explicit mention of a "three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" strongly anticipates Claim 3, which describes a detent and detent tracks for selecting between these three modes. While the specific configuration of the detent tracks (e.g., transverse grooves on the bottom side) is not detailed in the available abstract, the functional and high-level structural elements for multi-mode selection are clearly present.
- Claims 2, 8-13 (potentially): These dependent claims describe specific structural details (cylindrical shape of cam selector, longitudinal slot, ovular shape, dovetail/bent lever portions, rounded/corner-cut trigger tails). Given that US12038247B2 is from the same assignee and describes a functionally equivalent system, it is highly probable that these structural details are disclosed within US12038247B2 or would be obvious modifications based on its teachings. A full review of the patent would be necessary for a definitive assessment.

15. US12169105B1 - Firearm semiautomatic trigger mechanism

Full Citation: US12169105B1, Assignee: Abc Ip, Llc.
Publication/Filing Date: Priority date: 2023-06-29; Publication date: 2024-12-17.
Brief Description: This patent is identified as a divisional application related to a "firearm trigger mechanism" that is a "semiautomatic trigger that can be selectively mechanically reset by the cycling of the action." It explicitly references a "pivoting cam arrangement incorporates a three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes." This patent is also from the same assignee as US12529538.
Potential Anticipated Claims (35 U.S.C. § 102):
- Claim 1 (substantially): As a divisional application from the same assignee, and with the clear description of a "pivoting cam arrangement" and a "three-position safety selector" enabling "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes," this patent is highly likely to anticipate the fundamental aspects of Claim 1 of US12529538.
- Claim 3 (substantially): The explicit disclosure of a "three-position safety selector and associated structure" for selecting between the described modes strongly anticipates Claim 3. As a divisional, it is expected to disclose the structural means for achieving these functions.
- Claims 2, 8-13 (potentially): Given its nature as a divisional application from the same assignee describing a similar system, it is very likely that the specific structural details of the cam selector, lever, and trigger tail in these dependent claims are disclosed within US12169105B1 or its parent application, or would be rendered obvious by its teachings. A full review of the patent's text is essential for a conclusive assessment.

Summary of Most Relevant Prior Art

The patents US12038247B2 and US12169105B1 from the same assignee (ABC IP, LLC) appear to be the most relevant prior art. They explicitly disclose a three-position safety selector offering "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" and a pivoting cam arrangement for trigger reset, directly anticipating the core functional aspects of Claim 1 and Claim 3 of US12529538. The dependent claims (Claims 2, 8-13) describing specific structural features would require a thorough comparison with the full text of these patents, but it is highly probable that many of these features are disclosed or rendered obvious within these related inventions.

Additionally, US7398723B1 (Blakley) and the various Flex-fire technology patents (Graves: US9939221B2, US9816772B2, US9568264B2) are relevant for their disclosure of trigger reset mechanisms driven by the firearm's cycling action, anticipating the general concept of the "active reset" mode of US12529538. The examiner-cited patent US10466002B1 on "Safety selector assemblies" is also likely to be highly relevant but requires a full textual review.