Bluetooth Trigger-Locking Accessory for Multi-Firearm Compatibility

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Solution Overview

Problem

Existing firearm safety solutions are not universally compatible, pose usability issues, or fail to prevent unauthorized access and discharge, particularly for concealment or open carry users.

Innovation Solution

A self-locking slide mechanism activated by a Bluetooth proximity detector, solenoid, and spring-loaded slide, which locks the trigger when the user is out of range, ensuring compatibility with various firearms and preventing unauthorized use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a trigger locking device is designed to be universally compatible with various firearms, then adaptability is improved, but device complexity increases due to the need for multiple mounting configurations and universal interface design

Engineering Contradiction:
Improvefirearm compatibilityVSAvoidmounting mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device incorporates a universal mounting system with adjustable rails and multiple attachment configurations that can accommodate various firearm models. The trigger lock mechanism is designed with a standardized interface that works across different firearm types, allowing one device to serve multiple functions and platforms without requiring model-specific versions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If a Bluetooth proximity detector is used to control the trigger lock, then ease of operation is improved through wireless control, but device complexity increases due to electronic components and power requirements

Engineering Contradiction:
Improvetrigger control convenienceVSAvoidelectronic system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical key-based locking mechanisms with a wireless Bluetooth-controlled solenoid system. This substitution eliminates the need for physical keys and mechanical locking components, allowing users to control the trigger lock remotely through a smartphone app or Bluetooth device, significantly improving ease of operation while managing the trade-off in electronic complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If a spring-loaded slide acts as a second trigger, then reliability is improved by providing a mechanical backup safety mechanism, but device complexity increases due to additional mechanical components

Engineering Contradiction:
Improvesafety mechanism reliabilityVSAvoidmechanical component quantity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spring-loaded slide mechanism is designed to automatically engage and disengage based on trigger pressure. When the primary trigger is pulled, the spring mechanism automatically locks the slide in place to prevent accidental discharge. When pressure is released, the spring automatically returns the slide to its initial position. This self-regulating behavior provides reliable safety without requiring additional complex control systems or manual intervention.

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Provides enhanced safety by preventing accidental or unauthorized firearm discharge, especially in scenarios where the user is overpowered or young children are involved, while maintaining user privacy and ease of use.

Implementation Method 1

The device works by the use of a Bluetooth proximity detector, solenoid, switch and spring-loaded slide that acts as an open trigger cover obstructing the trigger from the front, sides and behind

Methodology Applied
Scientific EffectBluetooth wireless signal transmission: Electromagnetic Induction

Implementation Method 2

The device is powered by rechargeable lithium-ion batteries. The Bluetooth proximity detector operates the solenoid and unlocks it indefinitely until a Bluetooth broadcast transmission is broken at which point the solenoid would relock the spring-loaded slide again

Methodology Applied
Scientific EffectSolenoid electromagnetic actuation: Solenoid

Implementation Method 3

A spring pushes the slide acting as the second trigger back into position when the trigger is released or not under pressure

Methodology Applied
Scientific EffectSpring elastic force: Spring

Data Source

PatentUS12405077B2Remotely activated firearm accessory
Publication Date: 2025.09.02 MALICHEN-SNYDER THOMAS JOSEPH
  • US12405077B2 patent drawing
  • US12405077B2 patent drawing
  • US12405077B2 patent drawing

AI summary

The invention relates to an electronic device that is used to block the accessibility of a firearms Trigger. Wherein an electronic device is mounted on a rail or rail accessory and is locked in place using a lock and frame allowing the device to fit an array of firearms. The lock and frame are in place to stop easy removal unless the possessor has the key to remove them. The device its self uses a battery to operate and picks up a transmission broadcasted from a Bluetooth within its programmed range by the use of a Bluetooth proximity detector. Once the transmission has been picked up it activates its locking mechanism in the form of a solenoid causing its pin to shift and allows a slide placed in front of the trigger acting as a second trigger to move back and forth allowing the movement of the firearms trigger. The slide is moved back into its original position by the use of a spring. When the Bluetooth is out of the device's proximity detectors programmed range, the solenoid returns to its locked state stopping access to the trigger. Making the trigger locking device a beneficial reusable safety device.