Firearm Barrel Locking via Slide Lock Through Ejection Port

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing semiautomatic pistol designs with short-recoil action mechanisms face challenges in effectively locking and unlocking the barrel and slide, leading to inefficient energy transfer and increased muzzle rise due to suboptimal barrel positioning during firing cycles.

Innovation Solution

A locking mechanism that includes a body engaging the barrel and a slide lock extending through the ejection port of the slide to lock and unlock the barrel and slide, with the slide lock's position adjusted to reduce muzzle rise by lowering the barrel's centerline, utilizing a combination of pivoting and linear movements to engage and disengage the locking mechanism based on the firearm's operational positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the barrel is locked to the slide by traditional locking mechanisms (peripheral ribs, studs, lugs, or locking blocks), then the barrel and slide are securely engaged, but the barrel positioning is suboptimal leading to increased muzzle rise and inefficient energy transfer

Engineering Contradiction:
Improvebarrel-slide engagementVSAvoidmuzzle rise
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a new dimensional approach by extending the slide lock through the ejection port to engage the barrel, creating a three-point locking system that adds vertical dimension control to the traditional horizontal locking mechanism. This dimensional change allows for more precise barrel positioning that reduces muzzle rise while maintaining secure engagement.

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

Solution Approach 2:

The slide lock acts as an intermediary element between the slide and barrel, providing a mediating connection that enables precise positioning and control. The slide lock extending through the ejection port serves as this intermediary, allowing the locking mechanism to influence barrel position more effectively and reduce harmful recoil effects.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the barrel is locked to the slide by traditional locking mechanisms, then the structure is simple and proven, but energy transfer efficiency is reduced and operational stability decreases

Engineering Contradiction:
Improvelocking mechanism structureVSAvoidenergy transfer efficiency
Core Design Contradiction:
Device complexityVSUse of energy by moving object

Solution Approach 1:

The locking mechanism is segmented into distinct functional components: the slide lock extending through the ejection port and the body engaged to the barrel. This segmentation allows each component to perform its specific function optimally, improving energy transfer efficiency while keeping the overall structure manageable and relatively simple.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the slide lock extends through the ejection port to engage the barrel, then precise locking and unlocking is achieved improving recoil management, but the device complexity increases

Engineering Contradiction:
Improvelocking and unlocking precisionVSAvoidlocking mechanism structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The slide lock serving multiple functions - it locks the barrel to the slide, positions the barrel precisely to reduce muzzle rise, and extends through the ejection port to engage the barrel. This multi-functionality achieves precise locking and unlocking without proportionally increasing device complexity, as one component performs multiple critical roles.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10203173B2Barrel locking mechanism for a firearm
Publication Date: 2019.02.12 ELLIS JAMESON S
  • US10203173B2 patent drawing
  • US10203173B2 patent drawing
  • US10203173B2 patent drawing

AI summary

A locking mechanism for a firearm including a frame, a slide, a barrel and a firing mechanism is disclosed. The locking mechanism includes a body to engage the barrel and a slide lock extending from the body to engage the slide. With the slide in a forward position, the slide lock extends at least partially through an ejection port of the slide to engage the barrel with the slide.