Yoked Firearm Trigger Assembly with Integral Safety Cam

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Solution Overview

Problem

Translational firearm triggers lack safety performance compared to rotational triggers, being prone to unintentional discharge due to safety mechanism failures from drop shock or other occurrences, while maintaining a desirable 'feel' and sighting precision.

Innovation Solution

A firearms trigger assembly with a yoked design incorporating a trigger piece, safety cam pin, trigger housing piece, and trigger yoke, providing a crisp pull feel and improved sighting while integrating a reliable safety mechanism within the trigger assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a translational trigger is used, then the trigger feel and sighting precision are improved, but the safety performance deteriorates due to susceptibility to unintentional discharge from drop shock

Engineering Contradiction:

Improvetrigger feelVSAvoidsafety performance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent merges the translational trigger mechanism with a rotational safety component into a single integrated assembly. The trigger body (130) incorporates both the translational firing mechanism and the rotational safety cam (115), allowing the trigger to maintain its crisp translational feel while the integrated rotational safety prevents unintentional discharge. This combination resolves the contradiction by embedding safety functionality within the operational trigger structure itself.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If a rotational trigger is used, then the safety performance is improved, but the trigger feel and sighting precision deteriorate

Engineering Contradiction:

Improvesafety performanceVSAvoidtrigger feel

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the trigger functions into two distinct operational modes within a single integrated component. The trigger body (130) separates the translational firing motion from the rotational safety engagement, allowing each function to operate independently with its own optimized mechanics. The translational portion provides crisp trigger feel for firing, while the rotational safety cam provides reliable safety, resolving the contradiction by dividing functions rather than forcing a single motion type to serve both purposes.

Inventive Principle:

Principle #1Segmentation

3Reliability

If safety mechanisms are added to translational triggers, then the safety performance is improved, but the device complexity increases requiring redundant safety systems

Engineering Contradiction:

Improvesafety performanceVSAvoidnumber of safety systems

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal safety mechanism where the single integrated trigger assembly (110, 120, 130) performs both firing and safety functions. The safety cam pin (117) and cam (115) are built into the trigger body itself, allowing the same component structure to provide both the translational firing action and the rotational safety interlock. This eliminates the need for separate redundant safety systems, resolving the contradiction by making the trigger assembly multi-functional rather than adding separate safety devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11385009B2Firearms trigger assembly

Publication Date: 2022.07.12 DANIEL DEFENSE LLC

AI summary

A translational yoked trigger for a firearm has an integral trigger safety.