Pivoting Firearm Handgrip With Spring-Biased Shaft

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Traditional firearm handgrips are rotationally fixed, limiting user comfort and the ability to adjust the handgrip's orientation relative to the firearm.

Innovation Solution

A pivoting firearm handgrip with a spring-biased shaft that allows rotation up to 30° relative to the firearm, secured by key formations engaging complementary keyway and locking formations, enabling easy adjustment and locking in various positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the handgrip is rotationally fixed to the firearm, then the structural simplicity and manufacturing ease are improved, but the adaptability and user comfort are worsened

Engineering Contradiction:
Improvestructural simplicityVSAvoidhandgrip orientation adjustment
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The handgrip is designed with a pivoting mechanism that allows it to rotate dynamically between multiple locked positions (0°, 30°, 60°, 90°) relative to the firearm. The shaft with key formations enables the grip body to pivot and lock at different orientations, transforming the static fixed structure into a dynamic adjustable one, thus resolving the contradiction between structural simplicity and adaptability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The handgrip is divided into separate components: a grip base attached to the firearm, a pivoting shaft with key formations, and a grip body that can rotate. This segmentation allows the grip body to be independently positioned at different angles while maintaining a relatively simple overall structure, addressing both ease of manufacture and adaptability.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If the handgrip is made pivotable with multiple locking positions, then the adaptability and user comfort are improved, but the device complexity increases

Engineering Contradiction:
Improvehandgrip orientation adjustmentVSAvoidpivoting mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A shaft with key formations serves as an intermediary mechanism between the grip base and grip body. The shaft's key formations engage with corresponding keyways in the grip body and locking formations on the grip base, providing a relatively simple mechanical means to achieve multiple locked positions without requiring complex actuators or control systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The pivoting mechanism is designed to be manually operated by the user through simple rotation and locking actions. The spring-biased shaft automatically engages with the locking formations when the grip body is rotated to designated positions, eliminating the need for additional locking mechanisms or complex control systems, thus maintaining simplicity while providing adaptability.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If the shaft is spring-biased to automatically lock, then the ease of operation is improved, but the reliability of the locking mechanism may be worsened

Engineering Contradiction:
Improveautomatic locking functionVSAvoidlocking mechanism reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The spring-biased shaft replaces complex mechanical locking systems with a simpler elastic mechanism. The spring provides automatic engagement force that ensures reliable locking through the key formations and locking formations, while allowing easy manual override by depressing the shaft. This substitution maintains reliability through proper spring design while significantly improving ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 comfortable grip orientation adjustment and secure locking of the handgrip in multiple positions, enhancing user comfort and versatility.

Implementation Method 1

The spring bias of the shaft is provided by a spring captured between the head portion of the shaft and the grip body.

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS8601734B1Pivoting firearm handgrip
Publication Date: 2013.12.10 ALCOR SCI LLC
  • US8601734B1 patent drawing
  • US8601734B1 patent drawing
  • US8601734B1 patent drawing

AI summary

A pivoting firearm handgrip allows a user to pivot the handgrip relative to the firearm into various locked positions. The pivoting handgrip includes a grip base and a grip body that are selectively locked together by a spring biased shaft having key formations. The key formations on the shaft engage keyway formations on finger structures of the grip body. The key structures of the shaft also selectively engage locking formations on supporting structures on the grip base. A spring is captured between the head portion of the shaft and the grip body so that the key formations of the shaft are spring biased to engage the locking formations of the grip base. In use, a user depresses one end of the shaft to disengage the key formations of the shaft from the locking formations of the grip base, and then freely pivots the grip body about the base.