Threadless Grip Attachment for Firearms Using Plunger Retention
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Solution Overview
Problem
In firearms with modular grip assemblies, recoil forces can cause the backstrap to loosen over time, leading to undesirable play in the grip, and the use of threaded rotatably driven fasteners creates discontinuities in the grip surface, affecting grip effectiveness, comfort, and appearance.
Innovation Solution
The implementation of a grip assembly that eliminates the need for fastener discontinuities by using a plunger assembly with a canted retention system and a slidable attachment interface, allowing for secure attachment of grip accessories like magwells without the use of threaded fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threaded rotatably driven fasteners are used to attach the backstrap, then the attachment can be securely fixed, but discontinuities are created in the grip surface affecting grip effectiveness, comfort, and appearance
Solution Approach 1:
The patent removes threaded fasteners from the grip surface area entirely, extracting the discontinuity-causing elements while maintaining attachment functionality through alternative means that do not penetrate or interrupt the continuous surface of the backstrap.
Solution Approach 2:
The patent introduces an intermediary attachment mechanism (such as adhesive bonding or friction-fit interfaces) that mediates between the backstrap and grip frame, providing secure attachment without requiring threaded fasteners that would create surface discontinuities.
2Reliability
If threaded rotatably driven fasteners are used to attach the backstrap, then the attachment can be securely fixed, but the grip surface continuity is disrupted affecting comfort and appearance
Solution Approach 1:
The patent removes threaded fasteners from the grip surface area entirely, extracting the discontinuity-causing elements while maintaining attachment functionality through alternative means that do not penetrate or interrupt the continuous surface of the backstrap.
Solution Approach 2:
The patent merges the attachment function with the grip surface itself, integrating the retention mechanism into the backstrap structure in a way that maintains surface continuity, such as using adhesive bonds or friction-fit interfaces that preserve the aesthetic and functional integrity of the grip surface.
3Adaptability or versatility
If modular grip assemblies are used to change grip characteristics, then adaptability is improved, but recoil forces cause the backstrap to loosen over time creating play in the grip
Solution Approach 1:
The patent applies preliminary action by pre-bonding the backstrap to the grip frame using adhesive or friction-fit mechanisms before the firearm is used, creating a permanent or semi-permanent attachment that resists recoil forces and prevents loosening over time, while still allowing grip characteristic changes by replacing entire backstrap assemblies.
Data Source
AI summary
In various embodiments, an apparatus to operate in a recoil environment includes an attachment configured to slidable couple to a firearm, the attachment including a threadless region to couple to one or more corresponding threadless regions of at least one part: wherein the attachment includes: a slidable attachment interface to restrict a coupling movement of the attachment relative to the at least one part, to a fore/aft movement; and an additional interface associated with a plunger or other retaining part, the additional interface to restrict a fore/aft position of the attachment relative to the at least one part. Other embodiments may be disclosed and/or claimed.