Firearm Extractor Eliminates Torque for Linear Case Ejection
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Solution Overview
Problem
Existing extractor devices for firearms require increased force to pull the breech due to spring-loaded torque, making the cartridge case extraction process cumbersome.
Innovation Solution
The extractor device features a protrusion in the breech pot with a rotation axis near the barrel, allowing the extractor to rotate freely and minimizing torque, enabling a linear movement for cartridge case extraction without spring-loaded force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded extractor is used to ensure reliable cartridge case extraction, then extraction reliability is improved, but the force required to pull the breech increases due to spring-loaded torque
Solution Approach 1:
The patent removes the spring-loaded mechanism from the extractor system, extracting the source of harmful torque while maintaining extraction functionality through a purely mechanical claw design that relies on geometric constraints and friction rather than elastic recovery forces
Solution Approach 2:
Instead of using a spring-loaded system that stores and releases energy to drive extraction, the patent inverts the approach by using a passive extractor that relies on the natural movement and geometric constraints of the cartridge case and breech architecture to achieve extraction without stored elastic energy
2Ease of operation
If a traditional extractor design with spring loading is used, then extraction function is achieved, but the ease of operation deteriorates due to increased force requirement
Solution Approach 1:
The spring-loaded component is completely removed from the extractor assembly, eliminating the source of operational difficulty while preserving the essential extraction function through a simplified mechanical claw that engages and releases cartridge cases without requiring stored elastic energy
Solution Approach 2:
The extractor system is designed to be self-actuating through the natural rearward movement of the breech and the geometric interaction between the extractor claw, cartridge case mouth, and breech architecture, eliminating the need for external spring force or additional actuation mechanisms
Data Source
AI summary
An extractor of a firearm is mounted rotatably about a rotation point with an extractor claw in the region of an end of the extractor near the barrel of the firearm and a contact element in the region of an end of the extractor remote from the barrel. An extractor spring biases the extractor in an end position determined when the chamber is empty. Torque-free pulling of a cartridge case is made possible in that the extractor has a protrusion mounted in a pot of the breech. The protrusion's leading edge adjoins an undersurface of the protrusion. The protrusion is mounted on a bottom surface of the pot near the barrel. The protrusion leading edge is supported on a leading edge of the pot near the barrel. The pot leading edge forms the transition from the bottom surface to a boundary wall of the pot near the barrel. The leading edge forms a rotation axis of the extractor, which allows rotation of the extractor relative to the breech.