Firearm Extractor Pivot for Adjustable Ejection Direction
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Solution Overview
Problem
Existing firearms require complex and costly modifications to switch the ejection port position from right to left, which is not suitable for left-handed users or specific applications, and existing solutions are error-prone and increase production costs due to the need for additional parts and disassembly.
Innovation Solution
A firearm design where the ejector is in a cylindrical seat and the extractor pivots within this seat, allowing for easy adjustment of the ejection direction with a single manual operation, using a pivot path with end stops and a spring-mounted catch for precise positioning, and a rack and gear assembly for continuous adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the ejection port position is switched from right to left for left-handed users, then the firearm becomes suitable for left-handed operation, but the weapon requires extensive disassembly and part exchange which increases complexity and production costs
Solution Approach 1:
The extractor is made movable relative to the breech slide through a pivot mechanism, allowing the ejection direction to be dynamically changed without disassembling the weapon. The extractor can pivot between a first position for right-handed ejection and a second position for left-handed ejection, providing adaptability while maintaining structural simplicity.
Solution Approach 2:
The single extractor serves multiple functions by being capable of operating in two different ejection configurations. The same extractor component can eject cartridge cases to the right or to the left depending on its pivot position, eliminating the need for separate extractors for each handedness configuration.
2Adaptability or versatility
If double extractors and ejectors are installed to allow switching between right and left ejection, then ejection position switching becomes possible, but production costs increase and functional reliability decreases due to numerous additional parts
Solution Approach 1:
Instead of having two static extractors, the invention uses a single dynamic extractor that can pivot between two positions. This reduces the number of parts from two extractors to one, thereby improving reliability while maintaining the ability to switch ejection positions.
Solution Approach 2:
The invention merges the function of two separate extractors into a single extractor that performs both right-handed and left-handed ejection functions by pivoting. The extractor and ejector work together as an integrated assembly that can be positioned for either handedness, reducing part count and improving reliability.
3Adaptability or versatility
If manual operations are performed to remove safety catch and reinsert ejector for ejection position switching, then ejection direction can be changed, but the switching procedure becomes complicated and time-consuming
Solution Approach 1:
The extractor is designed to pivot easily between two fixed positions using a simple manual manipulation mechanism. The user can switch ejection direction by performing a single rotational movement of the extractor, eliminating the need for multiple manual operations such as removing safety catches and reinserting components.
Solution Approach 2:
The extractor is pre-configured with a pivot mechanism that allows it to be quickly repositioned between the two ejection positions. The design anticipates the need for switching and provides a ready-made mechanism that requires minimal user effort, rather than requiring disassembly and reassembly operations.
4Adaptability or versatility
If two symmetrically disposed seats are provided in the breech slide for extractor installation, then right and left ejection becomes possible, but the structure becomes complicated and error-prone requiring removal of safety catch
Solution Approach 1:
Instead of providing two separate fixed seats in the breech slide, the invention uses a single pivotable extractor that moves between two positions. This eliminates the need for two symmetrically disposed seats and their associated safety mechanisms, simplifying the breech slide structure while maintaining dual ejection capability.
Solution Approach 2:
The invention extracts the ejection direction changeability from the breech slide structure itself and relocates it to the extractor component. By making the extractor pivotable rather than providing multiple seats in the breech slide, the complexity and error-prone safety mechanisms are eliminated from the breech slide while preserving the functionality.
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
Enables fast and reliable adjustment of the ejection position with a single movement, allowing for customizable ejection angles without the need for extensive disassembly or additional parts, reducing production costs and improving functional reliability.
Implementation Method 1
an extractor that is connected to the breech slide and is biased toward the cartridge case by a spring
Data Source
AI summary
The invention relates to a firearm, comprising: a housing (1) having a barrel (2) arranged therein; a magazine, which can be inserted into a receptacle of the housing and which has cartridges; a breechblock (3), which can be moved relative to the housing (1) in the longitudinal direction of the barrel (2), for conveying cartridges out of the magazine into a cartridge chamber (4) located in the housing, and for conveying cartridge cases (5) from the cartridge chamber (4) to an ejection port (6) after a shot has been fired. An extractor (8), which is connected to the breechblock (3) and is preloaded in the direction of the cartridge case (5) by means of a spring (7), and an ejector (9), which is likewise connected to the breechblock (3), are provided for the ejection of the cartridge cases (5). The ejector (9) is arranged in a cylindrical ejector seat (10). The extractor (8) is arranged on an extractor seat (11), which is arranged for pivoting about the ejector seat (10). The extractor seat (11) can be fastened at different positions along the pivoting path in order to adjust the ejection direction of the cartridge cases (5).