Curved Feed Section for Firearm Magazine Capacity
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Solution Overview
Problem
Current double-row magazine devices for firearms do not optimize cartridge capacity due to straight linear feed sections, limiting the number of cartridges that can be efficiently fed into the magazine housing.
Innovation Solution
The feed section in the transition region of the magazine housing is curved, allowing for improved space utilization and increased cartridge capacity by positioning cartridges at a predetermined friction angle, enabling two to three additional cartridges to be stored compared to conventional devices of the same length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a straight linear feed section is used in the magazine housing, then the structure is simple and easy to manufacture, but the cartridge capacity is not optimized
Solution Approach 1:
The feed section is designed with a curved configuration instead of a straight linear form. The curvature radius varies along the feed section, creating an optimized path for cartridge feeding that improves space utilization within the magazine housing, thereby increasing cartridge capacity from 10 to 12 cartridges.
Solution Approach 2:
The curvature radius of the feed section is specifically optimized to vary along its length. By changing the geometric parameter (curvature radius) of the feed section, the patent achieves improved cartridge capacity while maintaining reliable feeding mechanics through controlled friction angles.
2Quantity of substance
If the magazine housing length is kept constant, then the device dimensions are compact, but the cartridge capacity is limited
Solution Approach 1:
The curved feed section with varying curvature radius allows the magazine to accommodate additional cartridges (increasing capacity from 10 to 12) within the same housing length by optimizing the spatial arrangement of cartridges in the feeding path.
3Quantity of substance
If a curved feed section with varying curvature radius is used, then the cartridge capacity is increased, but the manufacturing precision requirements are higher
Solution Approach 1:
The curvature radius is designed to vary along the feed section in a controlled manner. This parameter change optimizes the friction angle between cartridges and the feed section, ensuring reliable feeding while the varying radius design may simplify manufacturing compared to maintaining a constant tight tolerance curvature.
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
The curved feed section design enhances cartridge capacity by ensuring reliable cartridge alignment and movement, increasing storage by two cartridges on average, while maintaining efficient feeding mechanics.
Implementation Method 1
a magazine spring (120) mounted in the magazine housing (110), one end (121) of which is supported against a cartridge feeder (130) for conveying cartridges (200) into the cartridge chamber
Implementation Method 2
one end (121) of which is supported against a cartridge feeder (130) for conveying cartridges (200) into the cartridge chamber
Implementation Method 3
a respective lower cartridge (210) within the feed section (160) adjoins a respective upper cartridge (220) so as to press the respective upper cartridge (220) against a respective adjacent feed section (160) at a predetermined friction angle
Data Source
AI summary
A magazine device (100) for a double-row arrangement of successive cartridges (200) be inserted into a barrel of a firearm. A magazine housing (110) has an opening (150) to be placed below the cartridge chamber when inserted into the firearm for successive delivery of each cartridge (200). Two of the four opposite walls (112, 114) of the magazine housing (110) in a transition region below the opening (150) form a feed section (160) for successively feeding each cartridge (200) into the opening (150). The feed section (160) formed in the transition stage by two opposite walls (112, 114) of the magazine housing (110) is of a curved form.