Integrated Slide Catch Ejector for Subcompact Firearms
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Solution Overview
Problem
Subcompact pistols face design challenges in minimizing size and weight while maintaining functionality and safety, particularly in accommodating a slide catch mechanism that can efficiently hold the slide open for inspection and eject spent cartridge casings in limited space.
Innovation Solution
A dual-functional slide catch-ejector assembly that combines the functions of holding the slide open for inspection and ejecting cartridge casings, utilizing a single mechanism with a detent mechanism for selective vertical movement to efficiently utilize limited space in subcompact pistols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate slide catch and ejector mechanisms are used, then reliability of ejection function is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the slide catch mechanism and ejector mechanism into a single integrated assembly. The ejector is positioned within the slide catch structure, allowing both functions to be performed by one component rather than two separate mechanisms. This reduces the total number of parts while maintaining the reliability of both the slide holding and cartridge ejection functions.
Solution Approach 2:
The integrated slide catch-ejector assembly performs multiple functions simultaneously: it holds the slide in the open position for inspection and also ejects spent cartridge casings from the pistol. This multi-functional design eliminates the need for separate dedicated components for each function, reducing overall device complexity.
2Adaptability or versatility
If separate slide catch and ejector mechanisms are used, then functional independence is improved, but space requirements increase
Solution Approach 1:
The ejector mechanism is nested within the slide catch structure. The ejector components are positioned inside the hollow or open structure of the slide catch, allowing one mechanism to occupy the same spatial envelope as the other. This nesting arrangement maintains functional independence while dramatically reducing the total volume required.
Solution Approach 2:
The patent utilizes the vertical dimension by allowing the slide catch-ejector assembly to move vertically within the pistol structure. The assembly can shift between different vertical positions to perform different functions, effectively using the third dimension to accommodate multiple functions without increasing horizontal space requirements.
3Weight of moving object
If compact pistol design is pursued, then weight and size are reduced, but space for mechanisms is limited
Solution Approach 1:
By merging the slide catch and ejector into a single integrated assembly, the patent reduces the total material required and the overall space occupied by these mechanisms. This consolidation directly reduces the weight of the pistol while maintaining all necessary functions within the limited space available in a subcompact design.
Data Source
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AI summary
A slide catch-ejector assembly for an autoloading firearm. Au embodiment of a firearm having a slide catch-ejector assembly includes a housing, a slide slidably mounted on the housing for rearward and forward axial movement, and an assembly having a slide catch portion configured for engaging the slide and an ejector portion configured for ejecting cartridge casings from the firearm. In one embodiment, the assembly is selectively movable in the housing between a deactivated position in which the slide catch portion is not engageable with the slide and an activated position in which the slide catch portion is engageable with the slide. The ejector portion is selectively movable into and out of axial alignment with a chamber that receives a cartridge via moving the assembly between the deactivated and activated positions.