Firearm Trigger Mode Selector with Visual Indicators
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Solution Overview
Problem
Firearms often lack clear indicators for the operator to determine the current operating mode, leading to potential misuse in automatic mode when believed to be in semi-automatic mode.
Innovation Solution
A trigger mechanism with a mode selector element that includes a selector block, handle portion, and spring-biased detent pin, allowing rotation between safety, semi-automatic, and momentary automatic modes, with distinct engagement surfaces and detent recesses to ensure clear mode selection and indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a handle or lever is provided to place the firearm in various modes, then the firearm can be switched between safety, semi-automatic, and automatic modes, but the operator may become unaware of the operating mode and mistakenly fire in automatic mode while believing it to be in semi-automatic mode
Solution Approach 1:
The patent employs visual indicators (analogous to color changes) that provide distinct visual signals for each firing mode. The mode selector element includes visual markings or indicators that change appearance or position to clearly show the current mode (safety, semi-automatic, or automatic) to the operator, eliminating ambiguity and ensuring operator awareness of the firearm's operating state.
Solution Approach 2:
The patent implements feedback mechanisms through visual indicators that continuously display the current operating mode to the operator. The mode selector element provides real-time visual feedback about whether the firearm is in safety, semi-automatic, or automatic mode, allowing the operator to maintain accurate awareness of the firearm's state and prevent mistaken firing.
2Stability of the object's composition
If the trigger mechanism remains in the position placed by the operator, then the firearm maintains the selected mode, but the operator cannot easily change modes without moving the handle or lever
Solution Approach 1:
The patent divides the mode selector element into distinct segmented positions (safety, semi-automatic, automatic) with clear physical separation and visual differentiation. Each segment is a distinct position that the operator can independently select, allowing stable maintenance of each mode while providing clear, discrete options for mode switching without requiring continuous movement of a single lever.
Solution Approach 2:
The patent employs a dynamic mode selector element that can be easily moved between different positions by the operator. The selector element is designed with appropriate mechanical characteristics to allow smooth transitions between safety, semi-automatic, and automatic modes while maintaining stable positioning in each selected mode, balancing ease of operation with mode stability.
3Loss of information
If the mode selector element has distinct detent recesses and engagement surfaces for each mode, then clear mode indication is provided, but the device complexity increases
Solution Approach 1:
The patent designs the mode selector element to perform multiple functions within a single integrated component. The same selector element provides mode selection, visual indication, and mechanical positioning through its detent recesses and engagement surfaces. This multi-functional design achieves clear mode indication while minimizing the number of separate components needed, thereby limiting the increase in overall device complexity.
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
Enables operators to accurately select and maintain desired firing modes, preventing accidental automatic firing by providing clear and distinct positional indicators for each mode.
Implementation Method 1
a spring biased detent pin... the spring biased detent pin is engaged with the ramped surface such that the selector block is biased to automatically rotate from the third position to the second position
Data Source
AI summary
In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selector block and a handle portion extending from the selector block to allow the selector block to be rotated between the different modes. The mode selector element is configured such that the selector block can be indexed into the safety mode and the fire mode. The mode selector element is additionally configured such that the selector mode is spring biased to automatically rotate from the momentary automatic fire mode to the fire mode when the handle portion is not constrained by a force, such as when an operator releases the handle portion.