Retrofit Biometric Firearm Safety Blocking Rod
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Solution Overview
Problem
Existing firearms lack effective safety mechanisms that prevent accidental firing without altering the external shape or requiring redesign, and existing solutions often rely on physical keys or interfere with magazine operations, which are inefficient in emergency situations.
Innovation Solution
A modular safety device with a blocking rod and biometric identification system that fits inside the firearm's barrel, blocking cartridge entry and using a fingerprint sensor for authentication, allowing secure operation without altering the firearm's external shape or requiring external power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety device is installed in existing firearms, then safety functionality is improved, but the external shape of the firearm is altered
Solution Approach 1:
The safety device is nested within the existing barrel structure of the firearm. The blocking rod fits inside the barrel, and the biometric sensor is integrated into the proximal end of the blocking rod, allowing the safety function to be added without changing the external shape of the firearm.
Solution Approach 2:
The locking portion expands in a direction perpendicular to the longitudinal axis of the blocking rod to engage with the barrel. This perpendicular expansion allows the locking mechanism to engage without protruding externally, maintaining the firearm's original external shape while providing secure locking.
2Reliability
If a blocking rod is inserted into the barrel to prevent cartridge entry, then safety is improved, but the device complexity increases
Solution Approach 1:
The blocking rod combines multiple functions into a single component: it blocks cartridge entry, provides a mounting structure for the biometric sensor, and includes an integrated locking mechanism. This merging reduces the number of separate components needed while maintaining safety functionality.
Solution Approach 2:
The blocking rod serves multiple purposes: it acts as a physical barrier to prevent cartridge entry, provides a structural platform for integrating the biometric sensor, and incorporates the locking mechanism through its expansion capability. This multi-functionality simplifies the overall device structure.
3Reliability
If a biometric identification system is integrated into the blocking rod, then authentication security is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The biometric sensor is nested within the proximal end of the blocking rod, utilizing the existing structure of the blocking rod to house the sensor. This nesting approach minimizes additional manufacturing complexity while providing secure authentication functionality.
4Adaptability or versatility
If the blocking rod is made extensible by telescoping, then adaptability to different barrel lengths is improved, but the device complexity increases
Solution Approach 1:
The blocking rod is designed with telescoping capability, allowing it to extend and retract dynamically. This dynamic structure enables the rod to adapt to different barrel lengths while maintaining a compact form when retracted, reducing the need for multiple fixed-length versions.
Data Source
AI summary
A modular safety device configured for retrofitting a firearm, the firearm having a barrel including a muzzle and a chamber at a distal end of the barrel, the modular safety device comprising a blocking rod configured to fit inside the barrel including inside the chamber and to block entry of a cartridge into the chamber, the blocking rod having a lock configured to lockingly affix a locking portion of the lock to the barrel; and a biometric identification system integral to a proximal end of the blocking rod adjacent the muzzle and having a user interface surface accessible for a user to input biometric data of the user, wherein the safety device is configured to be within the firearm such that addition of the safety device to the firearm either does not alter an external shape of the firearm or merely juts slightly out of the muzzle.