Telescoping Firearm Stock With Continuous Cheek Rest

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Solution Overview

Problem

Traditional collapsible firearm stocks lack a sufficient range of motion in both collapsed and extended positions, compromising stability and accuracy, and often fail to provide a suitable surface for aiming, making them less compact and harder to use in confined spaces.

Innovation Solution

A collapsible and extendible stock design with a mount, first and second members, and a release mechanism that allows for controlled movement along a longitudinal axis, featuring a wedge member and biasing device to adjust between fully collapsed and fully extended states, with continuous cheek rest surfaces for improved aiming.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the stock length is reduced to make it more compact, then the compactness and ease of storage is improved, but the stability and accuracy of the firearm deteriorates

Engineering Contradiction:
ImprovecompactnessVSAvoidstability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The stock incorporates a telescoping mechanism with multiple members (first member, second member, third member) that can dynamically adjust their relative positions along the longitudinal axis. The release mechanism enables the stock to transition between extended and collapsed states, providing dynamic adaptability rather than a fixed length. This resolves the contradiction by allowing the stock to be long when stability is needed and short when compactness is needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stock is divided into multiple separable members (first member, second member, third member) connected by release mechanisms. Each member can move independently relative to the others along the longitudinal axis. This segmentation allows the stock to achieve both extended and collapsed configurations, resolving the contradiction between maintaining stability when extended and achieving compactness when collapsed.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the stock is made extendible to improve stability and accuracy, then the stability and accuracy is improved, but the ease of storage and portability deteriorates

Engineering Contradiction:
ImprovestabilityVSAvoidease of storage
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The telescoping stock provides dynamic length adjustment through its release mechanisms, allowing the user to extend the stock for stability during shooting and collapse it for compact storage and portability. This dynamic capability resolves the contradiction by enabling the stock to adapt its configuration based on operational needs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stock's segmented design with multiple movable members allows it to collapse into a compact form for easy storage while maintaining an extended form for stability during use. The release mechanisms enable easy transition between these states, resolving the contradiction between stability and ease of storage.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the range of motion of the stock is increased to provide both collapsed and extended positions, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improverange of motionVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stock is divided into multiple members (first, second, and third members) with release mechanisms positioned between them. This segmentation allows for controlled movement and locking at different positions, providing adaptability while managing complexity through modular design. Each segment can move independently, enabling a wide range of motion without requiring a single complex mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The release mechanisms enable dynamic adjustment of the stock's configuration, allowing transition between multiple positions (fully extended, partially extended, fully collapsed). This dynamic capability provides high adaptability while the mechanical nature of the release mechanisms keeps the overall device complexity manageable through straightforward mechanical principles.

Inventive Principle:
Principle #15Dynamics

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 design provides a greater range of motion and stability, maintaining accuracy while being compact, facilitating easy storage and use in confined spaces with a consistent aiming surface.

Implementation Method 1

The wedge member may include a first surface and a second surface that is adjacent to the first surface. The first surface may extend at a first angle relative to the longitudinal direction. The first angle may be at least twenty degrees and up to forty degrees. The second surface may extend at a second angle relative to the longitudinal direction. The second angle may be at least fifty degrees and up to seventy degrees.

Methodology Applied
Scientific EffectWedge: Wedge

Implementation Method 2

The release mechanism may include a biasing device that is coupled to the wedge member. The biasing device may be configured to bias the wedge member in the forward direction.

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS12487052B2Stock for a firearm
Publication Date: 2025.12.02 WHG PROPERTIES LLC
  • US12487052B2 patent drawing
  • US12487052B2 patent drawing
  • US12487052B2 patent drawing

AI summary

A stock for a firearm includes a mount, a first member, and a second member. The mount is configured to be coupled to a main body of the firearm. The first member is configured to move along a longitudinal axis defined by the firearm relative to the mount. The second member is configured to move along the longitudinal axis relative to the first member.