Polymeric Buttstock with Metal Reinforcement for Wear Resistance
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Solution Overview
Problem
Polymeric firearm buttstocks lack durability and robustness, particularly when subjected to impact forces and abrasive surfaces, and there is a need to enhance their wear performance without increasing weight.
Innovation Solution
A buttstock assembly design featuring a buttstock body with transverse passages and a retaining member system that includes a transfer member and biasing mechanism, allowing longitudinal displacement and improved force transmission, along with a reinforced buttpad assembly for enhanced wear resistance and impact handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If polymeric materials are used for buttstock construction, then weight and manufacturing cost are reduced, but durability and wear performance deteriorate
Solution Approach 1:
The buttstock combines polymeric material with metal reinforcement elements (metal reinforcement members embedded in the polymeric buttstock body). This composite construction maintains the lightweight advantage of polymeric materials while incorporating the strength and durability of metal components to resist wear and impact forces.
2Ease of manufacture
If polymeric materials are used for buttstock construction, then manufacturing cost is reduced, but wear performance and robustness deteriorate
Solution Approach 1:
The buttstock combines polymeric material with metal reinforcement elements (metal reinforcement members embedded in the polymeric buttstock body). This composite construction maintains the lightweight advantage of polymeric materials while incorporating the strength and durability of metal components to resist wear and impact forces.
3Strength
If metal construction is used for buttstock, then strength and robustness are improved, but weight increases
Solution Approach 1:
The buttstock combines polymeric material with metal reinforcement elements (metal reinforcement members embedded in the polymeric buttstock body). This composite construction maintains the lightweight advantage of polymeric materials while incorporating the strength and durability of metal components to resist wear and impact forces.
Solution Approach 2:
Metal reinforcement members are strategically positioned at specific locations within the buttstock structure where enhanced strength is most needed, such as the receiver interface and impact-bearing areas, while the majority of the buttstock body remains lightweight polymeric material.
4Reliability
If reinforcement is added to improve wear performance, then durability is improved, but weight increases
Solution Approach 1:
The buttstock combines polymeric material with metal reinforcement elements (metal reinforcement members embedded in the polymeric buttstock body). This composite construction maintains the lightweight advantage of polymeric materials while incorporating the strength and durability of metal components to resist wear and impact forces.
Solution Approach 2:
Metal reinforcement members are strategically positioned at specific locations within the buttstock structure where enhanced strength is most needed, such as the receiver interface and impact-bearing areas, while the majority of the buttstock body remains lightweight polymeric material.
Data Source
AI summary
A firearm buttstock includes a buttstock body having first, second and third passages. A transfer member is received in the second passage and a retaining member is received in the third passage. A firearm is also disclosed that has a receiver extension. The firearm buttstock can be supported on the firearm such that the receiver extension is received within the first passage. A method of assembling a firearm buttstock assembly is also included.