Release Trigger Assembly for Bolt Action Rifles

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Solution Overview

Problem

Traditional pull triggers in firearms tend to pull the rifle upward during firing, reducing accuracy due to the natural pulling motion, which affects shot placement.

Innovation Solution

A release trigger assembly that actuates the firing pin group when the trigger is released by the shooter's finger, rather than when pulled, improving shot placement by allowing the rifle to fire only when the trigger is released, and designed as a drop-in system for bolt action rifles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional pull trigger is used, then the trigger can be actuated by pulling motion, but the rifle barrel is pulled upward reducing accuracy

Engineering Contradiction:

Improvetrigger actuationVSAvoidshot placement accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent inverts the traditional trigger mechanism by switching from a pull-to-fire system to a release-to-fire system. The trigger is normally held in a forward position by a spring, and firing occurs when the trigger is released rather than when pulled. This inversion eliminates the upward pull motion that disturbs the rifle's aim, while still providing intuitive finger operation for the shooter.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The trigger assembly incorporates a preliminary locking mechanism where the trigger is pre-positioned in a forward locked state by the trigger spring. The sear engagement prevents accidental discharge by maintaining this locked position until intentional release. This preliminary anti-action counteracts the harmful upward pull effect by establishing a stable baseline position before firing.

Inventive Principle:

Principle #9Preliminary anti-action

2Manufacturing precision

If a release trigger mechanism is implemented, then shot placement accuracy is improved, but the device complexity increases

Engineering Contradiction:

Improveshot placement accuracyVSAvoidtrigger assembly structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into integrated components. The trigger assembly combines the trigger finger actuator, spring-loaded return mechanism, and sear engagement system into a unified structure. The trigger spring serves both to return the trigger to its forward position and to maintain sear engagement pressure. This consolidation reduces the number of separate parts while achieving the desired release-to-fire functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The trigger assembly is designed with universal applicability through standardized mounting features that allow installation in various rifle configurations. The modular design enables the same core mechanism to function across different firearm platforms, reducing overall system complexity through reuse of proven components and design patterns.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11828551B1Trigger assembly

Publication Date: 2023.11.28 MOYER MICAIAH

AI summary

A trigger assembly is disclosed. The trigger assembly contains a trigger containing an outer surface, a sear engagement member pivotally coupled with the outer surface of the trigger, and a spring member positioned between the outer surface and the sear engagement member.