Firearm Grip Strap Tool-Free Attachment Mechanism
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Solution Overview
Problem
Existing interchangeable grip straps for firearms require additional fasteners like screws or pins for retention, making it difficult to modify the grip size to accommodate different hand sizes without additional tools.
Innovation Solution
A grip strap attachment system that uses a spur and aperture mechanism, where the spur engages a recess on the firearm frame and the aperture receives a plunger biased by a mainspring, allowing for secure retention and easy removal without additional fasteners, utilizing a rotating motion and ramp surface to compress the mainspring for engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fasteners (screws, pins) are used to retain the grip strap, then the grip strap is securely retained to the firearm frame, but the device complexity increases and tool-free modification becomes difficult
Solution Approach 1:
The patent removes traditional fasteners (screws, pins) from the grip strap attachment system and replaces them with an integrated spur-aperture mechanism. The spur is built into the grip strap structure itself, and the aperture is formed in the frame, eliminating the need for separate fastening components and reducing overall device complexity while maintaining secure retention.
Solution Approach 2:
The patent combines the retention function with the structural elements of the grip strap and frame. The spur is integrated into the grip strap body, and the aperture is formed as part of the frame structure, merging the fastening function with the existing structural components rather than adding separate fastener elements.
2Reliability
If traditional fasteners are used for grip strap attachment, then secure retention is achieved, but ease of operation for tool-free modification is reduced
Solution Approach 1:
By removing traditional fasteners that require tools for installation and removal, the patent enables tool-free modification. The spur simply inserts into the aperture and secures through the biasing mechanism, allowing users to change grip straps without requiring screwdrivers, hex keys, or other tools.
Solution Approach 2:
The biasing mechanism automatically engages the spur with the aperture when the grip strap is installed, and automatically releases it when removed. The spring-loaded plunger self-adjusts to maintain engagement without requiring user intervention or tools, making the system self-servicing.
3Adaptability or versatility
If multiple fasteners are used to accommodate different hand sizes, then adaptability is improved, but device complexity and quantity of parts increases
Solution Approach 1:
The spur-aperture mechanism serves as a universal attachment system that can accommodate multiple grip strap sizes and configurations. The same basic mechanism works for all grip strap variations, eliminating the need for different fastener types or additional fasteners for different hand sizes.
Solution Approach 2:
The patent separates the grip strap from the firearm frame as interchangeable components, with the attachment mechanism built into both. This segmentation allows different grip straps to be easily swapped while using the same attachment system, providing adaptability without increasing fastener complexity.
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 easy modification of firearm grips by allowing different-sized grip straps to be attached and removed without tools, providing a secure and tool-free retention mechanism that accommodates various hand sizes.
Implementation Method 1
A mainspring is positioned within the grip and acts between the hammer strut and the cup
Implementation Method 2
movement of the plunger toward the mainspring compresses the mainspring
Data Source
AI summary
A grip strap is removably attachable to a grip of a firearm using a plunger mounted in the grip and biased by a mainspring which also biases a hammer strut of the firearm.