Holster Weapon Differentiation Notification System

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Solution Overview

Problem

Current holsters do not provide an audible and/or visual alert to differentiate between lethal and less-than-lethal weapons when drawn, leading to potential mistakes in force deployment during high-pressure situations, resulting in wrongful lawsuits and safety risks.

Innovation Solution

A weapon differentiation notification system integrated into holsters that uses sensors and a control system to provide audible and/or visual notifications specifying the type or level of force of the weapon being drawn, such as 'TASER, TASER, TASER!' for EMD devices and 'LETHAL, LETHAL, LETHAL!' for firearms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If EMD devices are configured to feel similar to firearms for ease of carry and draw, then officer convenience and readiness are improved, but the risk of mistaken weapon draws and lethal force misuse increases

Engineering Contradiction:
Improveease of drawVSAvoidrisk of mistaken draw
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system provides immediate auditory feedback to the officer during the draw operation. When the EMD is drawn, a distinct audible signal (e.g., 'TASER, TASER, TASER') is emitted, allowing the officer to verify the correct weapon was drawn. This feedback mechanism directly addresses the contradiction by maintaining the similar feel for ease of draw while adding verification to prevent mistakes.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system uses different audible signals as distinct identifiers for different weapon types. The audible signal acts as a semantic differentiation, where the sound pattern (similar to color coding) immediately indicates whether a lethal or less-lethal weapon is being drawn, resolving the ambiguity without changing the physical feel of the draw operation.

Inventive Principle:
Principle #32Color changes

2Loss of information

If officers verbally state they are drawing an EMD device to communicate with others, then situational awareness is improved, but the time required for communication and potential for error increases

Engineering Contradiction:
Improvecommunication of weapon typeVSAvoidtime for verbal declaration
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The system automatically generates and emits the weapon type identification signal without requiring the officer to manually activate it or verbally declare the weapon type. The sensor detects the draw action and the system self-generates the appropriate audible signal, eliminating the time and effort required for verbal communication while ensuring accurate information transmission.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The audible signal provides immediate feedback to both the drawing officer and other personnel present. This automatic feedback mechanism eliminates the delay inherent in verbal declarations, as the signal is emitted instantly upon draw detection, thereby reducing information loss time and ensuring all personnel are immediately aware of the weapon type.

Inventive Principle:
Principle #23Feedback

3Reliability

If holsters provide audible alerts to indicate weapon type, then mistake prevention is improved, but device complexity and cost increase

Engineering Contradiction:
Improvemistake preventionVSAvoidholster system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The holster system integrates multiple functions into a single unit: it detects the draw action, identifies the weapon type, generates the appropriate audible signal, and provides feedback. This multi-functionality consolidates what would otherwise require separate systems into one integrated holster, reducing overall system complexity while maintaining high reliability for mistake prevention.

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

Solution Approach 2:

The system uses the natural mechanical action of drawing the weapon itself as the trigger for the sensor and subsequent audible signal. The draw motion automatically activates the detection and signaling functions without requiring additional inputs or complex control mechanisms, thereby limiting the increase in device complexity while achieving reliable mistake prevention.

Inventive Principle:
Principle #25Self-service

4Reliability

If officers use cross-draw or weak-side carry to reduce mistaken draws, then safety is improved, but accessibility and readiness are reduced

Engineering Contradiction:
Improvesafety from mistaken drawsVSAvoidaccessibility of weapon
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The audible feedback signal provides immediate verification that the correct weapon was drawn, allowing officers to maintain their preferred carry position (including conventional straight draws) while eliminating the safety risks associated with mistaken draws. The feedback confirms the draw action, enabling officers to proceed with confidence regardless of their carry position.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system provides distinct audible identifiers that allow officers to quickly verify weapon type without changing their draw mechanics or carry position. This semantic differentiation enables officers to maintain their preferred accessibility and readiness while the audible signal ensures safety by confirming the correct weapon is being drawn.

Inventive Principle:
Principle #32Color changes

Data Source

PatentUS12188745B1Weapon differentiation notification system
Publication Date: 2025.01.07 URBAN DEFENSE ADVISORY GROUP LLC
  • US12188745B1 patent drawing
  • US12188745B1 patent drawing
  • US12188745B1 patent drawing

AI summary

A holster includes a system for providing an audio and/or a visual notification differentiating a lethal weapon from a less lethal weapon when one of these weapons is removed from its holster. The holster includes a sensor for detecting the presence of a weapon therein as well as removal of the weapon. Upon receiving a signal from the sensor indicating drawing of the weapon, a microcontroller actuates a speaker and/or a visual display to indicate the type of weapon which was drawn. Others are made aware of the type of weapon being drawn or which is currently deployed. The wearer of the holster is also made aware of a mistake if the incorrect type of weapon is drawn.