Ergonomic Personal Safety Device with Integrated Non-Lethal Deterrents

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Solution Overview

Problem

Individuals, particularly women and girls, face a disadvantage in physical altercations due to relative size and strength differences with attackers, and existing lethal weapons are often regulated or pose risks, while non-lethal options may have unintended fatal consequences.

Innovation Solution

A personal safety device with an ergonomic design for a female hand, incorporating a non-lethal defensive weapon, light, and attachments such as a telescoping friction baton, electroshock terminals, and irritant spray, designed to deter attackers without causing death.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lethal weapons are used for self-defense, then the ability to defend against attackers is improved, but regulatory restrictions and safety risks increase

Engineering Contradiction:

Improveself-defense capabilityVSAvoidsafety risks and regulatory restrictions

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the parameter of weapon lethality from lethal to non-lethal by using irritant substances (pepper spray, tear gas) and electrical shock as active ingredients, thereby reducing safety risks and regulatory restrictions while maintaining self-defense capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces non-lethal intermediary substances (irritant aerosols, electrical current) between the user and the attacker, which provide defensive capability without the extreme harm of lethal weapons, thus resolving the contradiction between effectiveness and safety

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If non-lethal defensive weapons are used, then safety risks are reduced, but unintended fatal consequences may still occur

Engineering Contradiction:

Improvesafety risksVSAvoidcontrol over harm level

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent uses non-lethal irritant substances and electrical shock that provide sufficient defensive action to incapacitate an attacker without exceeding the threshold of lethal force, thereby controlling the harm level while maintaining safety

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent converts potentially harmful substances into beneficial defensive tools by using controlled amounts of irritants and electrical shock that harm the attacker temporarily but save the user, thus reducing overall safety risks

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of operation

If the device is designed to fit female hands, then ease of operation for women is improved, but device size and weight are constrained

Engineering Contradiction:

Improvehand comfort and gripVSAvoiddevice size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The patent nests multiple functional components (spray canister, electrical shock mechanism, light, alarm) within a compact cylindrical housing that fits female hands, thereby achieving ease of operation while minimizing device volume through nested arrangement

Inventive Principle:

Principle #7Nested doll (Nesting)

4Reliability

If multiple defensive features are integrated, then self-defense effectiveness is improved, but device complexity increases

Engineering Contradiction:

Improveself-defense effectivenessVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple defensive features (irritant spray, electrical shock, light, alarm) into a single integrated device with unified power supply and control mechanisms, thereby improving self-defense effectiveness while managing complexity through consolidation

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250237487A1Personal safety device

Publication Date: 2025.07.24 SAFELY INC

AI summary

There is disclosed herein, by way of example, a personal safety device having a main body having disposed therein a non-lethal defensive weapon (such as pepper spray, taser, or baton); a hand enclosure; a light; and a bottom attachment; wherein the main body is constructed with a size and shape to comfortably fit an average human female hand.