Flexible Wrist Cuff for Arm Separation Prevention

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Solution Overview

Problem

The challenge of maintaining arm separation prevention while sleeping in a seated position, especially in shared airline seats, where armrests must be shared, leading to discomfort and disturbance from neighboring passengers.

Innovation Solution

A wrist cuff designed with a pair of flexible rings connected by a flexible connector, allowing the cuff to be comfortable and easy to use, preventing the arms from separating while sleeping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If arms are restrained using a rigid structure, then arm separation prevention is effective, but comfort during long periods deteriorates

Engineering Contradiction:

Improvearm separation preventionVSAvoiddiscomfort

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The wrist cuff is constructed from flexible materials including a flexible connector and flexible rings that can conform to the user's wrist anatomy. This flexibility maintains comfort during extended wear while the interconnected structure prevents arm separation, resolving the contradiction between restraint effectiveness and comfort.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The wrist cuff incorporates adjustable parameters including ring size selection and connector flexibility to adapt to different users and wear durations. These parameter variations allow the device to maintain both its arm-restraining function and comfort level throughout long periods of use.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If a simple cuff design is used, then ease of manufacture is improved, but effectiveness in preventing arm separation deteriorates

Engineering Contradiction:

Improvecuff productionVSAvoidarm separation prevention

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The wrist cuff is divided into separate components: individual rings for each wrist and a connector joining them. This segmentation simplifies manufacturing of each component while the assembled structure provides effective arm separation prevention through the interconnected design that restricts arm movement.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connector acts as an intermediary element between the two wrist rings, providing the necessary mechanical linkage to prevent arm separation while allowing each ring to be manufactured independently. This intermediary component enables the system to achieve its restraining function without requiring complex integrated manufacturing.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

The wrist cuff effectively prevents arm separation, reducing discomfort and disturbance from neighboring passengers, while being comfortable enough for long periods of use, such as during an airline flight.

Implementation Method 1

a pair of rings, each ring designed to be placed on the wrists of the user wherein the rings are connected by a connector and wherein the rings and connector are flexible

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12320166B2Travel cuff

Publication Date: 2025.06.03 BREAUX MICHAEL C

AI summary

A wrist cuff is designed to hold a user's arms together when seated on a transportation vehicle, like an airplane; the arms are slipped into each cuff and the cuffs are held together.