Magazine-Dependent Sear Catcher Prevents Accidental Discharge
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Solution Overview
Problem
Handguns can accidentally fire when a round remains in the barrel after the magazine is removed, and disassembly with a cocked firing pin can also lead to unintended firing, posing a risk of accidental discharge.
Innovation Solution
A magazine-dependent safety mechanism positioned inside the receiver, comprising a sear catcher, sear catcher spring, grip safety pin, sear, sear pin, firing pin safety lever, and firing pin, which blocks the firing chain when the magazine is removed, preventing triggering and allowing disassembly without cocking the firing pin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magazine is removed from the handgun, then the operator assumes the handgun is not loaded, but a round can remain in the barrel causing accidental firing
Solution Approach 1:
The patent introduces a magazine-dependent safety mechanism that acts as an intermediary between the magazine and the firing mechanism. This safety mechanism includes a magazine-dependent component that detects magazine presence and automatically blocks the firing path when the magazine is removed, preventing accidental discharge while maintaining simple operation for the user.
Solution Approach 2:
The safety mechanism performs preliminary blocking action before any accidental discharge could occur. When the magazine is removed, the safety mechanism proactively engages to block the firing path, ensuring that even if a round remains in the chamber, it cannot be discharged. This preliminary protective action eliminates the need for users to manually verify chamber status.
2Ease of operation
If the handgun is disassembled with a cocked firing pin, then the disassembly process can lead to unintended firing
Solution Approach 1:
The safety mechanism serves as an intermediary barrier between the cocked firing pin and the ammunition during disassembly. The magazine-dependent component detects when the magazine is absent and automatically positions a blocking element to prevent the firing pin from contacting the cartridge, allowing safe disassembly even with a cocked firing pin.
Solution Approach 2:
The safety mechanism applies preliminary anti-action by pre-positioning the blocking element to counteract any potential unintended firing during disassembly. The blocking element is already in place before disassembly begins, preventing the firing pin from cocking or discharging the round, thus eliminating the hazard entirely.
3Reliability
If a safety mechanism is added to prevent triggering, then safety is improved, but the mechanism complexity increases
Solution Approach 1:
The safety mechanism is self-activating based on magazine presence detection. The magazine-dependent component automatically engages or disengages the safety blocking element according to whether the magazine is inserted, without requiring user intervention. This self-service operation minimizes the number of controls and reduces operational complexity while maintaining high reliability.
Solution Approach 2:
The safety function is merged with the existing magazine release and firing mechanism components. The magazine-dependent safety mechanism utilizes the same structural elements already present in the handgun, combining multiple functions into existing parts rather than adding completely separate systems, thereby limiting the increase in overall device complexity.
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
Prevents accidental firing when the magazine is removed and enables safe disassembly of the handgun by blocking the firing chain, ensuring the firing pin is not cocked during disassembly, thereby enhancing safety during handling and maintenance.
Implementation Method 1
the sear catcher spring pushes the sear catcher into position in which it blocks the firing chain by blocking the firing pin safety lever
Data Source
AI summary
The invention discloses a safety mechanism of a handgun which depends on a magazine and which prevents the triggering of a handgun when the magazine is removed. Additionally, a mechanism enables handgun disassembly without need for the triggering after the magazine has been removed from the handgun. A safety mechanism is positioned inside the handgun receiver; including a magazine, sear catcher, sear catcher spring, grip safety pin, sear, sear pin, firing pin safety lever and firing pin. When the magazine is inserted into the handgun, the sear catcher is pushed into position in which it cannot block the firing pin safety lever nor catch the sear. When the magazine is removed from the handgun, the sear catcher spring pushes the sear catcher into position in which it blocks the firing chain by blocking the firing pin safety lever. At the same time it brings the sear catcher into position where it can hold the sear below the plane of the cocking of the firing pin as soon as the sear is sufficiently rotated around the sear pin by retracting the slide.