Slide Block Mechanism for Pistol Noise Reduction
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Solution Overview
Problem
Semi-automatic pistols generate excessive noise due to the reciprocation of the slide during discharge, which can cause hearing damage, and existing sound suppressors and sub-sonic ammunition do not effectively mitigate the mechanical noise component.
Innovation Solution
A slide block mechanism with aligned notches on the slide and frame, and a pivotable slide block lever that manually engages or disengages to prevent slide reciprocation, allowing the slide to be locked in battery and preventing rearward movement during discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the slide is allowed to reciprocate during discharge, then the pistol operates as a semi-automatic weapon with continuous firing capability, but excessive noise is generated from the mechanical action
Solution Approach 1:
The slide block lever is designed to be manually movable between two positions: engaged and disengaged. When engaged, it blocks the slide in battery position preventing reciprocation for single-shot mode. When disengaged, it allows free slide reciprocation for semi-automatic operation. This dynamic switching mechanism resolves the contradiction by allowing the system to adapt its behavior based on operational requirements.
2Object-generated harmful factors
If a slide block mechanism is added to prevent slide reciprocation, then noise from mechanical action is eliminated, but the device complexity increases
Solution Approach 1:
The slide block lever is integrated with existing pistol components, specifically utilizing the trigger guard and internal pins from the fire control mechanism to support the pivoting lever. The lever shares mounting points and structural elements with existing components rather than requiring entirely separate mounting structures. This merging approach reduces the overall complexity increase by reusing existing structural resources.
Solution Approach 2:
The slide block lever serves multiple functions: it acts as a blocking element to prevent slide reciprocation, provides a manual switching mechanism between firing modes, and integrates with existing fire control components. By making the lever multi-functional and having it serve several purposes simultaneously, the patent reduces the need for additional separate components, thereby minimizing the increase in device complexity.
3Object-generated harmful factors
If the slide is locked in battery position, then the sound signature is reduced, but the ability to perform semi-automatic operation is lost
Solution Approach 1:
The mechanism provides dynamic switching between two operational states through manual manipulation of the slide block lever. In the engaged state, the slide is locked in battery position eliminating reciprocation noise. In the disengaged state, the slide is free to reciprocate for normal semi-automatic operation. This dynamic capability allows the user to easily switch between noise-reduced single-shot mode and full semi-automatic operation as needed.
Data Source
AI summary
A slide block mechanism for a semi-automatic pistol that locks the slide in battery and prevents the slide from reciprocating when the pistol is discharged. The slide block mechanism consists of a pair of aligned notches formed in the bottom edge of the slide and the top of the frame, and a pivoting slide block lever mounted to the frame that selectively seats within either of the aligned notches. The slide block lever can be manually switched to engage and disengage the slide block mechanism and is independent of the fire control and slide stop assemblies. The slide block lever has a protrusion that seats within the slide notch when engaged to prevent the slide from moving rearward and seats within the frame notch when disengaged for allowing normal operation of the slide.