Compact Flotation Device Using Chemical Gas Generation
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Solution Overview
Problem
Existing automatic floatation devices for personal valuables are not practical for smaller items due to size constraints and require components like gas cartridges, water-sensitive triggers, one-way valves, or electronic circuitry, which are either bulky, unreliable, or require frequent maintenance.
Innovation Solution
A compact floatation device using an orifice plate combined with air relief and water inlet channels, eliminating the need for one-way valves and electronic components, and allowing operation regardless of orientation in water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If compressed gas cartridge with water sensitive trigger is used, then automatic activation is achieved, but device size becomes too large and reliability decreases due to moisture sensitivity
Solution Approach 1:
The patent extracts and eliminates the bulky compressed gas cartridge and water-sensitive trigger components by using a chemical reaction system that generates gas only when needed, significantly reducing device size while maintaining automatic activation functionality
Solution Approach 2:
The patent uses a disposable chemical reactant system that is consumed in the process, replacing the reusable but bulky mechanical gas cartridge system. The chemical reaction provides the necessary gas generation without requiring large storage vessels
2Ease of operation
If one-way valve assembly is used, then water inlet control is achieved, but device complexity increases and reliability decreases due to air lock phenomenon
Solution Approach 1:
The patent removes the complex one-way valve assembly comprising springs and balls, replacing it with a simple orifice plate design that achieves water inlet control through passive flow dynamics, eliminating air lock issues and reducing complexity
Solution Approach 2:
The patent replaces the mechanical one-way valve system with a passive orifice-based flow control system that uses pressure differentials and gravity to regulate water entry, eliminating the need for moving parts and reducing the risk of air lock
3Extent of automation
If electronic circuitry with battery is used, then automatic activation is achieved, but device reliability decreases due to battery maintenance requirements
Solution Approach 1:
The patent replaces electronic circuitry and batteries with a purely chemical reaction system that automatically generates gas when water contacts the reactant, eliminating all electronic components and maintenance requirements while maintaining automatic activation
Solution Approach 2:
The patent uses a self-activating chemical system that automatically responds to water contact without requiring external power sources or electronic controls, ensuring continuous reliability without battery replacement needs
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 floats small personal items to the surface without requiring batteries, electronic triggers, or bulky components, ensuring reliable operation and ease of use.
Implementation Method 1
a reactant storage cavity and a port between the bladder storage cavity and the reactant storage cavity. Further comprised of press fit tabs such that the press fit cap can be attached securely, but also popped off by the inflated bladder when filled with gas from the reactant
Implementation Method 2
The inflated bladder having enough buoyancy to float the article or valuable to which it is attached to the surface of the body of water for easy retrieval
Data Source
AI summary
A water activated, self-inflating, automatic floatation device that can be easily attached to small personal items of value for easy retrieval if accidentally dropped into a deep or low visibility body of water such as a lake, pond, stream, river, or ocean. The automatic flotation device is comprised of a housing, an inflatable bladder, water activated gas producing compound, an orifice plate, a gas expansion port, and a removable housing cover. The automatic floatation device will inflate the bladder regardless of orientation under water. The automatic floatation device is small enough that it can be attached to glasses, keys, cell phones, hats, basically any small personal item of value.