Patent 9512025

Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

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Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

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Defensive Disclosure for US9512025: Methods and Apparatuses for Reducing Heat Loss from Edge Directors

Introduction

As a Senior Patent Strategist and Research Engineer specializing in Defensive Publishing, this document outlines various derivative concepts extending beyond the claims of US Patent 9512025. These disclosures aim to establish prior art for foreseeable incremental improvements, thereby rendering them obvious or non-novel for future patent applications by competitors. The focus is on the core inventive concepts related to the replaceable heating cartridge, its inclined heat-directing surface, and its thermal shielding function in glass ribbon manufacturing.

Derivative Variations

1. Material & Component Substitution

Derivative 1.1: Advanced Ceramic Matrix Composite Heating Elements

Enabling Description:
The at least one heating element within the replaceable heating cartridge (Claim 8) is substituted with a ceramic matrix composite (CMC) heating element, specifically based on SiC fibers embedded in a SiC matrix. This SiC-SiC CMC heating element is designed to operate at significantly higher temperatures (>1700°C) and offers enhanced oxidation resistance and mechanical stability compared to conventional metallic alloys like platinum or molybdenum disilicide (Claim 7, 14). The CMC heating element is fabricated via chemical vapor infiltration (CVI) or liquid phase sintering (LPS) of woven SiC preforms. Electrical connections are made using high-temperature refractory metal contacts (e.g., Molybdenum-Rhenium alloy) with active cooling to prevent thermal degradation at the interface. The heat directing surface (Claim 8) itself can be integrated into the CMC structure, featuring micro-textured surfaces to optimize emissivity and radiant heat transfer efficiency to the edge director. The refractory material (Claim 8) behind the CMC element could be a high-porosity zirconia-alumina composite for superior insulation at extreme temperatures.

flowchart TD
    A[Molten Glass Flow] --> B[Forming Wedge]
    B --> C[Edge Director]
    C --> D[Glass Ribbon Edge]
    E[CMC Heating Cartridge] -- Radiates Heat --> C
    E -- Thermally Shields --> F[Cooled Edge Rollers]
    E -- Embedded SiC-SiC Heater --> G[High-Temp Refractory Insulation]
    G -- Power Supply --> H[Control System]

Derivative 1.2: Vacuum Insulation Panel (VIP) Enclosure with Multi-Layer Reflective Foils

Enabling Description:
The enclosure of the replaceable heating cartridge (Claim 8) is constructed with integrated Vacuum Insulation Panels (VIPs) to drastically reduce conductive and convective heat losses, particularly from the rear and sides, ensuring maximum radiant efficiency towards the edge director. The VIPs comprise a rigid, open-porous core material (e.g., fumed silica or microporous aerogel) evacuated to <1 mbar, sealed within a multi-layer reflective foil envelope (e.g., alternating layers of aluminum and polymer films, or refractory metal foils for high-temperature zones). The heat-directing surface (Claim 8) facing the edge director maintains its inclined angle (<90° as per Claim 8), but its non-facing exterior surfaces are covered by the VIPs. The heating element (Claim 8) remains on or adjacent to the heat-directing surface. This VIP integration allows for a more compact cartridge design while enhancing overall thermal efficiency and reducing power consumption.

classDiagram
    class ReplaceableHeatingCartridge {
        +Enclosure
        +HeatDirectingSurface
        +HeatingElement
        +RefractoryMaterial
        +BottomSurface
    }
    class VIP_Enclosure {
        -VacuumInsulationPanels
        -MultiLayerReflectiveFoils
        -PorousCoreMaterial
    }
    ReplaceableHeatingCartridge <|-- VIP_Enclosure : incorporates
    VIP_Enclosure "1" *-- "N" VacuumInsulationPanel
    VacuumInsulationPanel "1" *-- "1" MultilayerFoilEnvelope
    MultilayerFoilEnvelope "1" *-- "1" PorousCore

Derivative 1.3: Induction Heating with Embedded Graphite Susceptor

Enabling Description:
The heating element (Claim 8) is replaced by an induction heating system. An induction coil, made of water-cooled copper tubing, is positioned externally to the primary heat directing surface, but within the enclosure of the replaceable heating cartridge. Embedded within or immediately behind the ceramic refractory heat-directing surface (Claim 8) is a graphite susceptor. When the induction coil is energized with high-frequency alternating current, it generates eddy currents in the graphite susceptor, causing it to heat rapidly via ohmic losses. The graphite susceptor then radiates heat efficiently and precisely to the edge director. The inclined angle of the heat-directing surface (Claim 8) is maintained by shaping the graphite susceptor. This method offers very fast response times and precise power delivery to the heat-directing surface, enhancing control over edge director temperature. The refractory material (Claim 8) provides insulation for the induction coil.

flowchart LR
    A[Power Supply] --> B(Induction Coil)
    B --> C[Electromagnetic Field]
    C --> D{Graphite Susceptor}
    D -- Ohmic Heating --> E[Heat Directing Surface]
    E -- Radiant Heat --> F[Edge Director]
    H[Refractory Material] -- Insulates --> B
    G[Cooling System] -- Cools --> B

Derivative 1.4: Multi-Spectral Emitter Coatings for Targeted Wavelength Heating

Enabling Description:
The heat-directing surface (Claim 8) is coated with a multi-spectral emissivity coating optimized to match the absorption spectrum of the specific molten glass composition and the radiant heat loss characteristics of the edge director material. This coating, composed of specific ceramic oxides (e.g., rare-earth doped YSZ, silicon carbide, or hafnium carbide), is applied via plasma spray or chemical vapor deposition onto a ceramic refractory backer. The heating elements (Claim 8) embedded within or behind this surface heat the coating. By tuning the emissivity profile to specific infrared wavelengths, the radiant energy transfer to the edge director is maximized, while minimizing heating of ambient gasses or components with different absorption characteristics. This precise wavelength matching enhances heating efficiency and mitigates devitrification more effectively.

graph TD
    A[Heating Element] --> B(Multi-Spectral Emitter Coating)
    B -- Optimized Wavelength Radiation --> C[Edge Director Surface]
    C -- Absorb Specific Wavelengths --> D[Molten Glass @ Edge Director]
    E[Glass Composition Properties] -- Informs --> B
    F[Thermal Loss Characteristics of Edge Director] -- Informs --> B

2. Operational Parameter Expansion

Derivative 2.1: Nanoscale Glass Ribbon Formation with Micro-Cartridges

Enabling Description:
For the formation of nanoscale glass ribbons (e.g., for advanced optical waveguides, MEMS components, or flexible electronics substrates), the apparatus (Claim 1) is miniaturized. The forming wedge, edge director, and edge rollers are scaled down to operate at the micro- to nanoscale. Correspondingly, the replaceable heating cartridge (Claim 8) becomes a "micro-heating cartridge." This micro-cartridge features a heat-directing surface with dimensions on the order of micrometers, inclined at less than 90° (Claim 8), with micro-fabricated heating elements (e.g., thin-film platinum or polysilicon resistors) deposited on its surface via photolithography. The entire micro-cartridge is positioned via high-precision piezoelectric actuators. The thermal shielding function (Claim 8, 15) remains critical at this scale to prevent heat loss from the micro-edge director to actively cooled micro-rollers, which could operate at cryogenic temperatures to achieve rapid quenching for unique glass properties.

sequenceDiagram
    participant MG as Molten Glass (Nanoscale)
    participant MW as Micro-Forming Wedge
    participant MED as Micro-Edge Director
    participant MHC as Micro-Heating Cartridge
    participant MER as Micro-Edge Rollers
    participant AI as AI Control System

    MG ->> MW: Flow
    MW ->> MED: Direct
    MHC ->> MED: Radiate Heat (Micro-elements)
    MHC ->> MER: Shield Heat
    MED ->> MER: Glass Ribbon (Nanoscale)
    AI ->> MHC: Adjust Position & Power (Piezoelectric)
    AI ->> MER: Monitor & Adjust Cooling (Cryogenic)

Derivative 2.2: Ultra-High Temperature Operation for Refractory Glass

Enabling Description:
The apparatus (Claim 1) is configured for forming glass ribbons from refractory glass compositions (e.g., high-purity silica or specialized borosilicates) requiring molten glass temperatures exceeding 2000°C. The replaceable heating cartridge (Claim 8) is redesigned to withstand and operate at these extreme temperatures. The enclosure (Claim 8) is fabricated from high-temperature graphite or hafnium carbide composites with an inert gas (e.g., argon) purge to prevent oxidation. The heat-directing surface (Claim 8) is made of a dense, ultra-high temperature ceramic (e.g., hafnium diboride) with embedded high-power density heating elements made of rhenium or tungsten alloys (Claim 7, 14). The inclined angle (Claim 8) is maintained. The refractory material (Claim 8) behind the surface consists of multi-layered ceramic fiber insulation with active cooling channels. The thermal shielding (Claim 8, 15) becomes even more critical due to the enormous temperature differentials involved, requiring robust shielding materials and designs between the edge director and the actively cooled edge rollers (which might still be below 1000°C).

stateDiagram-v2
    state "Normal Operation (<1700C)" as Normal
    state "Ultra-High Temp (>2000C)" as UltraHigh
    state "Heating Cartridge" as HC {
        state "Enclosure: Graphite/HfC" as Encl
        state "Heat Surface: HfB2" as HS
        state "Heating Element: Re/W Alloy" as HE
        state "Refractory: Multi-Layer Ceramic Fiber" as Ref
        state "Inert Gas Purge" as Purge
    }

    Normal --> Fault : Critical System Fault
    Fault --> UltraHigh : Refractory Glass Composition
    UltraHigh --> HC
    HC --> Encl
    HC --> HS
    HC --> HE
    HC --> Ref
    HC --> Purge
    HS --> EdgeDirector : Radiate Extreme Heat
    HC --> EdgeRollers : Shield Extreme Heat

Derivative 2.3: High-Frequency Inductive Shielding and Heating

Enabling Description:
The apparatus (Claim 1) employs the replaceable heating cartridge (Claim 8) where the heating element functions as a high-frequency (e.g., 1-10 MHz) inductive coil directly energizing a susceptor within the edge director, thus heating the edge director. Simultaneously, this same high-frequency coil, or an adjacent, slightly de-phased coil, creates an alternating magnetic field that dynamically shields the edge director from the cooled edge rollers. The magnetic field induces eddy currents in the metallic components of the edge rollers and housing, creating a repulsive force that prevents radiant heat transfer by modifying the local thermal environment, similar to a dynamic magnetic shield. The inclined angle (Claim 8) of the cartridge and its positioning (Claim 1, 15) ensure precise field shaping and targeted heating/shielding. This expands "thermally shield" (Claim 1, 8, 15) beyond passive thermal blocking to active, dynamic electromagnetic shielding.

flowchart LR
    A[HF AC Power] --> B(Inductive Coil)
    B -- Induces Eddy Currents --> C[Edge Director Susceptor]
    C -- Ohmic Heating --> D[Edge Director]
    B -- Generates Dynamic EM Field --> E[Edge Rollers]
    E -- Induces Eddy Currents --> F[Thermal Shielding Effect]
    B --> G[Heat Directing Surface (Inclined)]
    G -- Directs EM Field --> D

3. Cross-Domain Application

Derivative 3.1: Precision Edge Temperature Control for Additive Manufacturing of Ceramics

Enabling Description:
The core mechanism of US9512025, particularly the replaceable heating cartridge with its inclined heat-directing surface and thermal shielding, is applied to additive manufacturing (AM) of ceramic components, specifically during selective laser sintering (SLS) or binder jetting processes. In this application, a ceramic precursor powder bed is selectively heated by a laser or binder. As the ceramic layer is built up, the edges of the newly formed "part" are prone to thermal gradients, leading to warping, cracking, or undesirable grain growth. A miniaturized, replaceable heating cartridge, similar to Claim 8, is strategically positioned near the growing edge of the 3D-printed ceramic part. Its inclined heat-directing surface (angle <90°) emits precise radiant heat (via a miniaturized heating element) onto the critical edge region, maintaining it at a desired annealing or sintering temperature. Simultaneously, the cartridge's lower edge and bottom surface thermally shield the nascent ceramic edge from the cooler ambient environment or cooling fan, preventing rapid cooling and associated defects. This ensures uniform densification and microstructure at the part edges.

graph TD
    A[Ceramic AM Build Chamber] --> B[Ceramic Powder Bed]
    B --> C[Laser/Binder Application]
    C --> D[Growing 3D Ceramic Part]
    D -- Critical Edge Region --> E[Miniaturized Heating Cartridge]
    E -- Radiant Heat --> D
    E -- Thermal Shielding --> F[Cooler Ambient/Cooling Fan]
    G[Control System] --> E : Adjust Power/Position

Derivative 3.2: Edge Hardening and Quench-Shielding in Continuous Steel Strip Processing

Enabling Description:
The principles of US9512025 are adapted for continuous steel strip processing, specifically for precision edge hardening or annealing operations. Hot steel strips (e.g., after rolling) often require controlled cooling across their width. However, edges can cool too rapidly, leading to undesirable microstructures (e.g., excessive martensite formation resulting in embrittlement) or, conversely, uneven annealing. A replaceable heating cartridge, scaled for industrial steel strip lines, is positioned adjacent to the moving steel strip edge. Its inclined heat-directing surface (angle <90°) is equipped with high-power, robust heating elements (e.g., induction coils or radiant ceramic heaters) to apply focused heat to the edge, either to maintain an annealing temperature or to pre-heat for a subsequent localized quench. Crucially, the cartridge's bottom surface and lower edge act as a thermal shield, preventing rapid heat loss from the heated edge to the surrounding, often significantly cooler, atmosphere or adjacent cooling zones. This maintains a precise thermal profile along the strip edge, ensuring uniform metallurgical properties.

flowchart LR
    A[Hot Steel Strip] --> B[Moving Line]
    B -- Edge Region --> C[Industrial Heating Cartridge]
    C -- Radiant Heat/Induction --> B
    C -- Thermal Shield --> D[Cooler Ambient / Quench Zone]
    E[Process Control System] --> C : Regulate Heat / Shielding
    B --> F[Finished Steel Product]

Derivative 3.3: Humidity Control and Dehumidification Shielding in Pharmaceutical Film Coating

Enabling Description:
The core concept of localized environmental control and shielding via an inclined surface from US9512025 is adapted for pharmaceutical film coating processes, specifically to control localized humidity and temperature during continuous coating of tablets or granules on a moving belt. In this application, a uniform and controlled drying environment is critical to prevent moisture-induced degradation, solvent blistering, or non-uniform coating thickness. Instead of a heat-directing surface, the replaceable cartridge (conceptually derived from Claim 8) houses a dehumidification/localized environmental conditioning unit. Its inclined "environmental directing surface" (analogous to the heat directing surface, angle <90°) directs a localized stream of precisely conditioned (low-humidity, temperature-controlled) air or inert gas onto the critical edge zones of the moving pharmaceutical film or tablet bed. Simultaneously, the lower edge and bottom surface of this cartridge (analogous to thermal shielding) act as a "humidity/air-flow shield," preventing uncontrolled ambient air or high-humidity zones from interfering with the conditioned edge environment. This prevents edge-related coating defects by isolating the critical drying zone.

graph TD
    A[Coating Drum/Belt] --> B[Moving Pharmaceutical Product (Tablets/Granules)]
    B -- Edge Region --> C[Environmental Conditioning Cartridge]
    C -- Conditioned Air Stream --> B
    C -- Humidity/Airflow Shield --> D[Ambient Environment / High Humidity]
    E[Humidity/Temp Sensors] --> F[Control System]
    F --> C : Regulate Air / Temp / Humidity

4. Integration with Emerging Tech

Derivative 4.1: AI-Driven Predictive Optimization of Heating Cartridge Parameters

Enabling Description:
The apparatus (Claim 1) integrates an AI-driven predictive optimization system. A dense array of IoT sensors (e.g., non-contact pyrometers, optical sensors for devitrification detection, strain gauges on the forming wedge/edge director) continuously monitors the molten glass temperature, flow dynamics, and ribbon quality at the edge. This real-time data is fed into a machine learning model, specifically a recurrent neural network (RNN) or a transformer-based model, trained on historical process data, simulation results, and known devitrification patterns. The AI model predicts the likelihood and location of devitrification or heat loss based on current operating conditions and environmental factors. In response, the AI dynamically adjusts the operating parameters of the replaceable heating cartridge (Claim 8, 15), including:
1. Heating element power output (Claim 8).
2. Fine-tuning the inclined angle of the heat-directing surface via miniature actuators (e.g., shape memory alloy or piezoelectric).
3. Adjusting the spatial orientation and position of the entire cartridge (Claim 1, 15) relative to the edge director to optimize the view factor and shielding effect in real-time.
This predictive control anticipates deviations before they lead to defects, maintaining optimal edge quality with minimal energy consumption.

flowchart TD
    A[IoT Thermal Sensors] --> B{Data Preprocessing}
    C[Optical Devitrification Sensors] --> B
    D[Strain Gauges] --> B
    B --> E[AI/ML Predictive Model]
    E -- Predicted Devitrification Risk --> F[Control Unit]
    F --> G[Heating Cartridge Power Regulator]
    F --> H[Cartridge Angle Actuator]
    F --> I[Cartridge Position Actuator]
    G --> J[Heating Elements]
    H --> K[Heat Directing Surface]
    I --> L[Heating Cartridge Assembly]
    J,K,L --> M[Edge Director]

Derivative 4.2: IoT-Enabled Real-time Thermal Mapping and Anomaly Detection

Enabling Description:
The replaceable heating cartridge (Claim 8) and surrounding housing (Claim 1) are outfitted with a distributed network of low-power, wireless IoT thermal sensors (e.g., miniature IR cameras, thermistors, thermocouples, or acoustic pyrometers). These sensors form a mesh network, continuously collecting high-resolution thermal data from the heat-directing surface (Claim 8), the edge director, the cooling rollers, and critical interfaces. The data is transmitted wirelessly to a local edge computing gateway, then securely pushed to a cloud-based platform for aggregation and analysis. The system employs anomaly detection algorithms (e.g., Isolation Forest or One-Class SVM) to identify subtle thermal irregularities on the edge director or heating cartridge components, indicating potential impending failures (e.g., heater degradation, insulation breakdown, or glass adhesion issues) before they become critical. This provides proactive maintenance alerts and allows for "just-in-time" replacement of cartridges (Claim 1, 15) to prevent downtime and defects.

graph TD
    subgraph HeatingCartridge
        direction LR
        HC1[Heat Dir. Surface] --- S1(IR Sensor 1)
        R1[Refractory Material] --- S2(Thermistor 1)
        B1[Bottom Surface] --- S3(Acoustic Pyrometer)
    end
    subgraph Housing
        H1[Housing Wall] --- S4(IR Sensor 2)
    end
    S1,S2,S3,S4 -- Wireless Transmit --> E(Edge Gateway)
    E -- Encrypted Data Stream --> C(Cloud Platform)
    C -- Data Aggregation & Analysis --> AD{Anomaly Detection ML Model}
    AD -- Alerts --> O[Operator Interface]
    AD -- Proactive Maintenance Command --> A[Actuators for Cartridge Replacement]

Derivative 4.3: Blockchain-Verified Supply Chain and Performance Log for Replaceable Heating Cartridges

Enabling Description:
To enhance transparency, traceability, and quality assurance for the replaceable heating cartridges (Claim 8, 15), each cartridge is assigned a unique digital identity (e.g., an NFC tag or QR code linked to a cryptographic hash). This identity is registered on a private or consortium blockchain network. Critical data points throughout the cartridge's lifecycle are immutably recorded on the ledger:
1. Material Provenance: Origin and certification of refractory materials, heating element alloys, and enclosure components (Claim 7, 14).
2. Manufacturing Parameters: Key process variables during cartridge assembly.
3. Quality Control Checks: Results of pre-deployment thermal performance tests, dimensional accuracy, and insulation integrity.
4. Operational Performance Log: Real-time operational data (e.g., power consumption, detected surface temperature profiles, hours of operation, number of replacements) collected by IoT sensors (Derivative 4.2) are periodically hashed and linked to the cartridge's blockchain record.
5. Maintenance History: Records of any repairs, calibrations, or inspections.
This distributed ledger ensures that the full history and performance of each cartridge are verifiable and tamper-proof, enabling better inventory management, predictive maintenance, and quality control, especially important for "replaceable" components (Claim 8, 15) whose performance directly impacts glass quality.

sequenceDiagram
    participant M as Manufacturer
    participant Q as QA Dept
    participant S as Shipping
    participant G as Glass Factory
    participant I as IoT Sensors
    participant B as Blockchain Ledger

    M->>B: Register Cartridge ID & Materials Hash
    Q->>B: Add Manufacturing & QC Data Hash
    S->>B: Record Shipment & Delivery Hash
    G->>B: Record Installation Date Hash
    I->>B: Periodically Add Operational Data Hashes
    G->>B: Record Replacement/Disposal Hash
    alt Verification
        G->>B: Query Cartridge History
        B->>G: Provide Immutable Log
    end

5. The "Inverse" or Failure Mode

Derivative 5.1: Fail-Safe Low-Power "Idle" Mode with De-energized Shielding

Enabling Description:
The replaceable heating cartridge (Claim 8, 15) is designed with a fail-safe low-power "idle" mode activated upon detection of critical system faults (e.g., loss of cooling to edge rollers, catastrophic failure of a primary heating element, or unstable molten glass flow). In this mode, the main heating elements (Claim 8) are partially or fully de-energized to prevent overheating of the edge director or adjacent glass. However, the thermal shielding function (Claim 1, 8, 15) is maintained, albeit in a passive, reduced capacity. This is achieved by ensuring the refractory material (Claim 8) and the structural components of the enclosure remain physically positioned between the edge director and edge rollers. Additionally, a secondary, low-power resistive heating trace (e.g., a low-mass, high-resistance wire) embedded in the heat-directing surface can maintain a minimal "keep-warm" temperature to prevent extreme thermal shock to the edge director, allowing for a more graceful shutdown or recovery without immediate total loss of the glass ribbon.

stateDiagram-v2
    state "Normal Operation" as Normal
    state "Fault Detected" as Fault
    state "Low-Power Idle Mode" as Idle
    state "Heating Elements De-energized" as HE_Off
    state "Passive Thermal Shield Active" as PassiveShield
    state "Keep-Warm Trace Active (Optional)" as KeepWarm

    Normal --> Fault : Critical System Fault
    Fault --> Idle : Activate Fail-Safe Protocol
    Idle --> HE_Off
    Idle --> PassiveShield
    Idle --> KeepWarm
    HE_Off --> EdgeDirector : Reduced Heat
    PassiveShield --> EdgeRollers : Reduced Shielding (Passive)
    KeepWarm --> EdgeDirector : Minimal Heat

Derivative 5.2: Adaptive "Limited-Functionality" Mode with Redundant Heating Zones

Enabling Description:
The replaceable heating cartridge (Claim 8) incorporates a plurality of independently controllable heating elements, configured in spatially distinct zones on the heat-directing surface. Upon detection of a partial failure in one or more heating elements (e.g., open circuit, localized overheating), the system transitions into a "limited-functionality" mode. An onboard controller (or the main apparatus controller, Claim 1, 15) isolates the failed element(s) and dynamically re-distributes power to the remaining functional heating zones. The inclined angle of the heat-directing surface (Claim 8) and its overall position (Claim 1, 15) are maintained. The control system may adjust overall glass ribbon draw speed or other process parameters (e.g., molten glass temperature upstream) to compensate for the reduced, uneven heating capability at the edge director. While not operating at peak efficiency, this mode prolongs the cartridge's operational life until a scheduled replacement (Claim 15), preventing immediate catastrophic failure and enabling continued, albeit degraded, glass production.

graph TD
    subgraph Replaceable Heating Cartridge
        direction LR
        HCA[Heating Control Architecture]
        HZ1[Heating Zone 1]
        HZ2[Heating Zone 2]
        HZ3[Heating Zone 3]
        HD[Heat Directing Surface]
        HCA -- Power Distribution --> HZ1 & HZ2 & HZ3
        HZ1, HZ2, HZ3 --> HD
    end
    F[Failure Detected in HZ1] --> HCA
    HCA -- Isolate HZ1 & Re-distribute Power --> HZ2, HZ3
    HCA --> O[Process Optimization Logic]
    O -- Adjusts --> G[Glass Ribbon Draw Speed]
    O -- Adjusts --> M[Upstream Molten Glass Temp]
    HD --> E[Edge Director]

Derivative 5.3: Reverse Thermal Gradient "Quench Director" Cartridge

Enabling Description:
Instead of solely directing heat, a derivative of the replaceable heating cartridge (Claim 8) is envisioned as a "Quench Director" cartridge, specifically designed to induce a controlled reverse thermal gradient for ultra-rapid quenching of molten glass edges under certain process conditions (e.g., forming specialty glasses requiring extreme rapid cooling to suppress crystallization). This cartridge features an inclined "cooling directing surface" (analogous to heat directing surface, angle <90°). Instead of heating elements, it contains high-efficiency micro-channel liquid cooling loops or impingement jets for cryogenically cooled inert gas (e.g., liquid nitrogen vapor). The surface itself is highly thermally conductive (e.g., copper-tungsten alloy) to maximize heat extraction from the glass edge. The "thermal shielding" function (Claim 1, 8, 15) is inverted; the cartridge is positioned to shield the rapidly quenched glass edge from ambient heat sources or slower-cooling adjacent areas of the glass ribbon, ensuring a uniform and rapid quench profile across the edge. This provides precise, controlled localized cooling rather than heating.

flowchart TD
    A[Molten Glass Flow] --> B[Forming Wedge]
    B --> C[Edge Director]
    C --> D[Glass Ribbon Edge]
    E[Quench Director Cartridge] -- Extracts Heat --> C
    E -- Thermally Shields From --> F[Ambient Heat / Slower Cooling Zones]
    E -- Micro-Channel Cooling / Cryogenic Jets --> G[Coolant Supply]
    G -- Control System --> H[Quench Director Cartridge]

Combination Prior Art Scenarios

Here are at least three "Combination Prior Art" scenarios where US Patent 9512025 (or its core inventive concepts) is combined with existing open-source standards. This demonstrates how the disclosed invention, when combined with widely available knowledge, could lead to obvious improvements.

Scenario 1: US9512025 with Open-Source Robotics and Machine Vision Standards for Automated Cartridge Replacement

Enabling Description:
The "replaceable heating cartridge" (Claim 8, 15) and its "removably positioned" nature (Claim 1) are combined with Robot Operating System (ROS), an open-source framework for robot software development, and OpenCV (Open Source Computer Vision Library), an open-source computer vision library.
The automation involves:

  1. Detection of Cartridge Wear/Failure: IoT sensors (as in Derivative 4.2) and machine vision cameras integrated into the housing (Claim 1) continuously monitor the heat-directing surface (Claim 8) for signs of wear, degradation, or deviation in temperature profile. OpenCV algorithms process visual data to detect cracks, material erosion, or localized hot spots.
  2. Autonomous Replacement Task Planning: Upon detection of a predefined degradation threshold, an industrial robotic arm, running control software based on ROS, initiates a cartridge replacement sequence. ROS nodes manage path planning, gripper control, and collision avoidance within the glass forming apparatus.
  3. Precision Cartridge Installation: The robotic arm, guided by real-time visual feedback from stereo cameras and OpenCV's object recognition (locating the port and aligning the cartridge, Claim 1), precisely removes the degraded cartridge and installs a new one. The new cartridge's identity is verified via an NFC reader (as in Derivative 4.3 for blockchain) before installation.
    This combination automates the replacement process, reducing human intervention, speeding up maintenance, and improving consistency, thereby enhancing the "replaceable" aspect of the invention.
sequenceDiagram
    participant S as IoT Sensors & Vision Cameras
    participant OC as OpenCV Algorithms
    participant RS as ROS Robot Control
    participant RH as Robotic Arm
    participant HC as Heating Cartridge (Degraded)
    participant NHC as New Heating Cartridge
    participant HP as Housing Port

    S->>OC: Image & Thermal Data
    OC->>RS: Detect Degradation/Failure
    RS->>RH: Plan Replacement Path
    RH->>HP: Detach HC
    RH->>HP: Insert NHC
    RS->>OC: Verify New Cartridge Alignment
    OC->>RS: Confirmation

Scenario 2: US9512025 with OPC UA (Open Platform Communications Unified Architecture) for Standardized Process Control Integration

Enabling Description:
The apparatus for making a glass ribbon (Claim 1) and its method of heating (Claim 15) the edge director with a replaceable heating cartridge (Claim 8) are integrated into a broader industrial control system using the OPC UA (Open Platform Communications Unified Architecture) open-source standard.

  1. Standardized Data Exchange: The controller (180, described in the patent) for the heating cartridge power, thermal sensors (182), and other process parameters (e.g., edge roller speed, molten glass flow rate) publishes its data and exposes its control functions as OPC UA services. This enables seamless, secure, and vendor-agnostic data exchange with other automation systems (e.g., plant-wide SCADA, MES, or ERP systems).
  2. Interoperable Control: Third-party control applications can monitor the "thermal characteristic" (Claim 15) of the edge director, heat-directing surface, and edge rollers, and issue commands to adjust heating cartridge power or other parameters (as per Derivative 4.1's AI system) using standardized OPC UA client interfaces.
  3. Remote Monitoring & Diagnostics: Operators and maintenance personnel can remotely access real-time and historical performance data of the heating cartridges and edge directors, enabling predictive maintenance and optimization across multiple glass forming lines, leveraging the robust security and data modeling capabilities of OPC UA.
graph LR
    subgraph Glass Forming Apparatus (US9512025)
        C[Controller 180] --- HC[Heating Cartridge 110a]
        C --- TS[Thermal Sensor 182]
        C --- ER[Edge Rollers 132]
    end
    C -- OPC UA Server --> GW(OPC UA Gateway)
    GW -- Data Exchange --> SC(SCADA System)
    GW -- Control Commands --> MES(MES System)
    GW -- Data Access --> ERP(ERP System)
    GW -- Remote Monitor --> OPS[Remote Operator Workstation]

Scenario 3: US9512025 with Open-Source Data Visualization Libraries and Cloud Platforms for Performance Benchmarking

Enabling Description:
The method of making a glass ribbon (Claim 15) and specifically the operational data from the replaceable heating cartridge (Claim 8) are processed and visualized using open-source data visualization libraries (e.g., D3.js, Plotly.js, or Grafana with open-source backend databases like InfluxDB) integrated with open-source cloud platforms (e.g., OpenStack, Kubernetes).

  1. Data Ingestion and Storage: Real-time thermal feedback (Claim 15) from multiple edge directors and their associated heating cartridges across various glass forming lines is ingested via MQTT (Message Queuing Telemetry Transport, an open-source IoT protocol) into a distributed time-series database running on an open-source cloud infrastructure.
  2. Interactive Performance Dashboards: Customized dashboards built with D3.js or Grafana display critical metrics such as edge director temperature uniformity, heating cartridge power consumption, view factor efficiency, and predicted devitrification rates. These dashboards allow engineers to interactively analyze trends, compare performance against benchmarks, and identify optimal operating points.
  3. Community-Driven Optimization: By anonymizing and aggregating performance data (e.g., for specific glass types or machine configurations) and sharing it (within a controlled consortium) via open-source tools, a community of users could collaboratively identify best practices and propose improvements to cartridge designs or operational methodologies, driving continuous improvement of the core invention's application.
graph TD
    A[Heating Cartridge 110a] --> B{IoT Gateway}
    C[Thermal Sensor 182] --> B
    D[Edge Director 80a] --> B
    B -- MQTT --> E(Open-Source Cloud Platform)
    E -- Ingests Data --> F[Time-Series DB (InfluxDB)]
    F --> G[Data Processing & Analytics]
    G -- Queries & APIs --> H[Visualization Libraries (D3.js/Plotly.js)]
    G -- Dashboarding --> I[Grafana Dashboards]
    H,I --> J[Engineer/Operator Interface]
    J -- Insights & Optimization --> A,C,D

Generated 5/15/2026, 6:46:39 AM