Inflatable Torso Restraint Tube for Rapid Arm Confinement
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Solution Overview
Problem
Existing human restraint methods, such as handcuffs and non-contact devices, often fail to effectively restrict movement and protect against spitting, posing risks to both restraints and bystanders, and require pre-outfitting or complex activation.
Innovation Solution
A human restraint device comprising a band for the upper torso with an inflatable tube that expands inwardly, a net to restrict arm movement, an anti-spitting mask, and a gas release mechanism for rapid inflation, using compressed gas or a gas generator, with a rope for control and deflation mechanism for safe removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical contact restraint methods are used, then movement restriction is effective, but risk of injury to participants increases
Solution Approach 1:
The patent employs an inflatable tube as the core restraining element, which when inflated creates sufficient pressure to restrict movement while avoiding the need for direct physical contact that causes injury. The inflatable tube expands to contact the person's body, providing reliable movement restriction through controlled pressure rather than manual force.
Solution Approach 2:
The inflatable tube acts as a flexible shell that conforms to the person's body shape, distributing pressure evenly and providing effective movement restriction without creating sharp contact points that could cause injury. The flexible nature of the inflated tube allows it to adapt to different body positions while maintaining restraining effectiveness.
2Object-affected harmful factors
If non-contact restraint methods are used, then injury risk is reduced, but movement restriction effectiveness decreases
Solution Approach 1:
The inflatable tube uses pneumatic pressure to create effective physical contact for movement restriction. When inflated, the tube expands to contact the person's body with sufficient force to restrict movement, bridging the gap between non-contact application and effective physical restraint.
3Object-affected harmful factors
If anti-spitting masks are used, then health risks from spitting are prevented, but device complexity increases
Solution Approach 1:
The patent combines the anti-spitting mask with the inflatable tube restraint system into a single integrated device. The mask is positioned to cover the person's face while the inflatable tube restrains the body, creating a unified restraint system that addresses both movement restriction and spitting prevention without requiring separate devices.
4Speed
If rapid inflation is implemented, then response time is reduced, but gas release mechanism complexity increases
Solution Approach 1:
The gas release mechanism changes the parameter of gas flow rate from slow to rapid through controlled release. The mechanism is designed to quickly open and allow rapid inflation of the tube when activated, providing fast response time while maintaining a relatively simple mechanical structure through straightforward valve control.
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 device effectively restricts arm movement and prevents spitting, reducing health risks and allowing for easy application and removal, while minimizing injury risk to users and restrained individuals.
Implementation Method 1
a gas release mechanism to rapidly inflate the inflatable tube... the inflatable tube is inflated by release of compressed gas from two or more disposable cartridges of compressed gas
Implementation Method 2
an inflatable tube attached to an inside wall of the band, wherein the tube expands during inflation inwards and away from the band, and whereby the tube when inflated presses against the torso of the person
Data Source
Figure 1
Figure 2
AI summary
A human restraint device enables effective restraint by pressing a person's arms (3) against the person's torso. The device includes a band (1) dimensioned to fit over an upper torso and shoulders of a person; an inflatable tube (2) attached to the band, wherein the tube expands during inflation inwards and away from the band, whereby the tube presses against the torso of the person; a net (5) comprising a mouth attached around a circumference of the band; and a gas release mechanism (6) to rapidly inflate the inflatable tube. Net (5) preferably includes a spit-proof material (10).