Pivoting Gun Stock with Ball and Socket Joint
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Fixed gun stocks limit the range of movement for firearms, leading to increased recoil force and decreased accuracy due to the need for users to reposition their shoulders to maintain line-of-sight alignment, especially during rapid or repeated firings.
Innovation Solution
An adjustable, pivotable butt-plate system with a ball and socket connection allows for customizable orientation and re-adjustment of the firearm relative to the user's shoulder, providing a stable anchor point and facilitating line-of-sight alignment with various sighting devices through a swivel mechanism and haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed gun stock is used, then the structure is simple and stable, but the range of movement is limited and recoil force increases
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed stock into a dynamic system with a pivotable butt-plate connected via ball and socket joint. This allows the butt-plate to rotate and pivot relative to the stock, enabling the firearm to adapt its angle and position while maintaining a stable anchor point at the shoulder contact area.
Solution Approach 2:
The patent segments the stock into two functional parts: a fixed stock body that provides structural stability and a movable butt-plate that can pivot independently. This segmentation allows the stable anchor point to remain fixed while the butt-plate adjusts to different angles and positions.
2Measurement precision
If the user repositions the shoulder to maintain line-of-sight alignment, then accuracy is maintained, but response time decreases and user comfort deteriorates
Solution Approach 1:
The dynamic pivot mechanism allows the firearm itself to adapt its position rather than requiring the user to reposition their shoulder. The ball and socket joint enables smooth rotation to maintain line-of-sight alignment with different sighting devices while the shoulder anchor point remains stationary.
3Adaptability or versatility
If the butt-plate is not fully seated against the shoulder, then movement freedom increases, but recoil force increases and accuracy decreases
Solution Approach 1:
The pivot mechanism is designed to maintain the butt-plate in full contact with the shoulder across all positions within its range of motion. The ball and socket joint ensures that the anchor point remains at the optimal shoulder pocket position regardless of the angle, distributing recoil forces effectively while allowing positional adjustment.
4Adaptability or versatility
If a pivotal connection is added to the stock, then adaptability and line-of-sight alignment improve, but device complexity increases
Solution Approach 1:
The patent implements a relatively simple dynamic mechanism using a ball and socket joint with a detent system. This provides multi-position adjustability and pivot capability without requiring complex motors, sensors, or active control systems. The mechanical detent system with springs and balls offers automatic positioning.
5Productivity
If rapid repeated firings are performed with a fixed stock, then productivity increases, but anchor point stability decreases and injury risk increases
Solution Approach 1:
The pivotable butt-plate with ball and socket connection provides a dynamically stable system that maintains the anchor point at the optimal shoulder pocket position during rapid firing. The mechanical connection absorbs and distributes recoil forces while preventing the stock from shifting or becoming unstable during repeated shots.
Data Source
AI summary
An adjustable shoulder rest for a rear stock for a rifle or shotgun, with slidable adjustment features at the butt plate to customize the shoulder to firearm interface, providing diverse adjustment options pursuant to user preference and/or circumstances of use. The present invention further provides a pivotal, slidably-adjustable shoulder rest to facilitate customized position adjustment to the firearms orientation vis-a-vis the operator, including the option to provide a swivel connection for adjustment of the firearm during operation as well as the option of providing haptic feedback to communicate to the user or otherwise facilitate line of sight alignment of the firearm at various angles relative to the longitudinal axis thereof in line with one or more sighting apparatus mounted thereto.