Firearm Slide Assist Device Mechanical Leverage

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Solution Overview

Problem

Racking a firearm slide requires significant force, which can be challenging for individuals with limited hand strength, potentially leading to accidental discharge or inability to defend oneself effectively, especially in situations like misfires or jams.

Innovation Solution

A firearm slide assist device with a handle and cam end featuring upper and lower tines, a securing arm, and a fastening device, providing mechanical leverage to easily rack the slide without retrofitting the firearm, and allowing quick mounting and removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If manual racking of the slide is used, then the firearm can be operated, but significant force is required which may be beyond the capability of some users

Engineering Contradiction:
Improveforce required to rack slideVSAvoidease of racking slide
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

A slide assist device acts as an intermediary tool between the user's hand and the firearm slide. The device includes a handle for user gripping and a cam mechanism that interfaces with the slide, providing mechanical leverage to reduce the force required for racking while maintaining proper slide manipulation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The slide assist device introduces a mechanical advantage through a cam mechanism that converts the user's linear pulling motion on the handle into rotational motion of the cam, which then applies force to the slide at a different point and angle, effectively reducing the required input force.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If a slide assist device is added to the firearm, then racking the slide becomes easier, but the device complexity increases

Engineering Contradiction:
Improveease of racking slideVSAvoidcomplexity of firearm system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The slide assist device is designed as a separate, modular component that attaches to the firearm slide rather than being integrated into the firearm's core structure. This segmentation allows the assist mechanism to be added without modifying the firearm's fundamental design, maintaining simplicity while providing the desired functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The assist device serves as a temporary intermediary tool that can be attached when needed and removed when not needed, rather than being a permanent modification to the firearm. This approach adds complexity only when required, preserving the simplicity of the base firearm system.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the slide assist device is permanently mounted on the firearm, then it is always available for use, but the firearm requires modification

Engineering Contradiction:
Improveavailability of assist deviceVSAvoidease of mounting device
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The slide assist device employs a dynamic attachment system that allows it to be easily mounted and dismounted as needed. The device can be quickly attached to the slide when assistance is required and removed when not needed, providing flexibility without requiring permanent modification to the firearm.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The assist device functions as a removable intermediary tool rather than a permanent fixture, allowing users to attach it temporarily when needed for racking assistance and remove it afterward, avoiding permanent firearm modification while maintaining reliability when required.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enhances the user's ability to safely and forcefully manipulate the slide, providing enhanced mechanical leverage for racking, ensuring proper operation and quick defense capabilities without the need for special tools or reconfiguration.

Implementation Method 1

providing enhanced mechanical leverage for racking

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS10274272B1Firearm slide assist deviceoma 4260
Publication Date: 2019.04.30 OWENSBY MARK A
  • US10274272B1 patent drawing
  • US10274272B1 patent drawing
  • US10274272B1 patent drawing

AI summary

A firearm slide assist device is disclosed with a handle having a grasping end and a cam end with an upper tine and a lower tine. The firearm slide assist device further includes a securing arm for connection to the cam end, and a fastening device for fastening the securing arm within the upper tine and the lower tine of the cam end.