Elastic Breathing Bag Buoyancy Control
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Solution Overview
Problem
Existing underwater breathing systems face challenges with positive buoyancy, which affects depth and surface return, and require special certification and are cumbersome, making them impractical for casual diving.
Innovation Solution
A breathing system with an elastic interior bag and integrated weighted material, using a pump and slider mechanism to compensate for buoyancy and allow efficient underwater movement without pressurized tanks or regulators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If air is stored in a container for underwater breathing, then the diver can breathe fresh air underwater, but the positive buoyancy of the air inhibits the diver's ability to reach depth
Solution Approach 1:
The patent applies counterweight by adding a weighted compartment with adjustable weights to offset the positive buoyancy created by the air-filled bag. This allows the diver to achieve neutral or negative buoyancy for depth control while still having access to breathable air in the bag.
Solution Approach 2:
The patent implements dynamic buoyancy control through an adjustable weight system that can be modified based on the diver's needs. The weights can be repositioned or adjusted to change the buoyancy characteristics of the apparatus, allowing adaptation to different diving conditions and depths.
2Weight of moving object
If weight is added to the apparatus to counteract buoyancy, then the diver can reach depth, but the added weight inhibits the diver's ability to return to the surface
Solution Approach 1:
The patent implements a feedback mechanism where the diver monitors buoyancy and adjusts the weight configuration accordingly. The system provides real-time feedback on buoyancy status, allowing the diver to make informed adjustments to maintain optimal depth control and facilitate easy surface return when needed.
Solution Approach 2:
The adjustable weight system allows dynamic modification of the apparatus's buoyancy characteristics. The diver can reconfigure the weights during the dive to optimize for both depth achievement and surface return, making the system adaptable to different phases of the diving operation.
3Stress or pressure
If a rigid pressurized tank is used to store air, then air can be supplied under pressure, but the device becomes cumbersome and requires special certification
Solution Approach 1:
The patent replaces rigid pressurized tanks with a flexible elastic bag that can be manually or mechanically inflated. This flexible membrane approach eliminates the need for high-pressure cylinders, complex regulators, and associated safety certifications, while still providing adequate air supply for recreational diving.
Solution Approach 2:
The patent substitutes complex mechanical pressurization systems (tanks, regulators, valves) with a simpler inflation mechanism. The air can be introduced through manual pumping or a simple electric pump, eliminating the need for SCUBA-style pressure regulation equipment and reducing overall system complexity.
4Ease of operation
If the bag is made elastic to facilitate air drawing, then air can be drawn more easily underwater, but the bag's volume may change under pressure
Solution Approach 1:
The patent addresses volume control by selecting elastic materials with specific mechanical properties that maintain adequate volume stability under diving pressures. The material parameters (elastic modulus, tensile strength) are chosen to balance flexibility for easy air drawing with sufficient rigidity to maintain functional volume at depth.
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
Enables accurate buoyancy control and safe, efficient underwater exploration without the need for special certification, reducing costs and complexity.
Implementation Method 1
The elasticity of the bag makes it easier to draw air from the apparatus in light of the pressure on the diver from the underwater environment
Implementation Method 2
The container has the ability to hold a weighted material... compensating for the positive buoyancy created by said air
Data Source
AI summary
An underwater breathing apparatus includes an elastic interior bag designed to hold air. The interior bag is contained within an outer container, which is designed to hold a weighted material which functions to offset positive buoyancy created by the air in the interior bag. The elasticity of the interior bag, as well as a slider mechanism, functions to provide pressure such that the air is accessible to a human diver while underwater. The apparatus also contains a pump that is used to fill the interior bag with air, and a mouthpiece that functions to allow the user to draw air from the apparatus.