Detachable 1911 Trigger Shoe for Fast Swap Without Disassembly

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Solution Overview

Problem

Existing 1911/2011 pistols require complete disassembly to swap the trigger shoe, which is inconvenient for users who want to change trigger types during shooting exercises or other situations.

Innovation Solution

A modular trigger system with a detachable trigger shoe that can be swapped without disassembling the pistol, using a selectable detachment feature between the trigger shoe and trigger bow, allowing the shoe to be replaced while the trigger bow remains installed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the trigger shoe is permanently attached to the trigger bow, then the structural integrity and reliability of the trigger assembly is improved, but the ease of operation deteriorates because complete disassembly is required to swap trigger shoes

Engineering Contradiction:

Improvetrigger assembly integrityVSAvoidtrigger shoe swapping convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The trigger assembly is segmented into detachable components (trigger shoe and trigger bow) connected by a selective detachment feature. This allows the trigger shoe to be separated from the trigger bow for replacement while maintaining overall assembly integrity during normal operation. The segmentation enables easy swapping without requiring complete disassembly of the firearm.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection between the trigger shoe and trigger bow transitions from a static permanent attachment to a dynamic selective attachment. The selectable detachment feature allows the connection state to change between engaged (during firing) and disengaged (during replacement), providing both reliability during operation and ease of maintenance during swapping.

Inventive Principle:

Principle #15Dynamics

2Reliability

If complete disassembly is required to swap trigger shoes, then the structural integrity of the firearm is maintained, but the time required for maintenance and customization increases

Engineering Contradiction:

Improvefirearm structural integrityVSAvoidtrigger shoe replacement time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The trigger assembly is divided into separable modules (trigger shoe and trigger bow) that can be independently handled. This segmentation allows users to replace only the trigger shoe component without disassembling the entire firearm, significantly reducing maintenance time while preserving structural integrity through precise re-engagement of the selective detachment feature.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The trigger shoe can be extracted from the trigger bow assembly through the selectable detachment feature. This extraction capability allows users to remove and replace the trigger shoe quickly without affecting other components of the firearm, reducing the time required for maintenance and customization while maintaining overall structural integrity.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If a modular detachable trigger shoe system is implemented, then the ease of operation for swapping trigger shoes is improved, but the device complexity increases

Engineering Contradiction:

Improvetrigger shoe swapping convenienceVSAvoidtrigger assembly structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The trigger assembly is segmented into two main components (trigger shoe and trigger bow) connected by a selective detachment feature. This segmentation provides ease of operation for swapping while adding minimal complexity, as the separation is achieved through a simple engagement/disengagement mechanism rather than multiple fasteners or complex linkages.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The selective detachment feature serves multiple functions: it provides the trigger shoe with a detachable connection for easy replacement, maintains structural integrity during normal operation, and enables selective separation without requiring complete disassembly. This multi-functionality reduces the need for additional separate mechanisms, thereby limiting the increase in device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250347485A1Modular firearm trigger system

Publication Date: 2025.11.13 VITULLI BRANDON

AI summary

A trigger system having a detachable trigger shoe. The trigger shoe is made detachable from the trigger bow while the trigger bow remains in an installed state within the pistol. A selectable detachment feature is provided for the connection between the trigger shoe and the trigger bow. The user can activate this detachment feature and remove the shoe while leaving the trigger bow in place. The user can then install a different trigger shoe while the trigger bow remains in place.