Inverted Threaded Lid Seal for Leak-Proof Trash Receptacle
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Solution Overview
Problem
Current portable trash cans lack the ability to prevent leakage and odor migration when inverted or tipped, failing to effectively contain liquids and noxious substances regardless of orientation.
Innovation Solution
A portable air-tight and water-tight trash receptacle system comprising a lid, outer ring, inner ring, and fabric cover, with threaded interfaces and rubber seals to secure a trash bag, ensuring containment of liquids and gases through a compressible seal and locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple open vessel design is used for portable trash cans, then ease of manufacture and device complexity are improved, but the ability to prevent leakage and odor migration when inverted or tipped deteriorates
Solution Approach 1:
The patent inverts the traditional lid-resting-on-can design by having the lid thread onto the can from the bottom, with the seal interface located at the bottom opening rather than the top. This inversion allows the heavy lid to act as a weight that presses the seal against the can opening, preventing leakage when inverted while maintaining structural simplicity
Solution Approach 2:
The patent uses a flexible rubber seal (gasket) that conforms to the opening of the can and creates a hermetic barrier. This flexible membrane component enables reliable sealing without complex mechanical structures, resolving the contradiction between simplicity and leakage prevention
2Ease of operation
If a lid resting on the lip of the trash can is used, then ease of operation is improved, but the ability to prevent leakage when inverted or falls over deteriorates
Solution Approach 1:
The lid is inverted from the conventional design by threading onto the bottom of the can rather than resting on top. This allows the lid to function as a weight that actively presses the seal against the can opening, providing automatic leak prevention when inverted while remaining easy to operate through simple threading motion
Solution Approach 2:
The lid design allows it to serve itself by using its own weight to press the rubber seal against the can opening. This self-pressing mechanism automatically prevents leakage when the container is inverted without requiring additional springs, weights, or complex locking mechanisms
3Reliability
If a hermetic seal with threaded interfaces and rubber seals is implemented, then leakage prevention and odor containment are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs a simple rubber gasket (flexible membrane) that creates the hermetic seal. This single flexible component provides comprehensive sealing without requiring multiple rigid sealing elements, reducing overall device complexity while achieving reliable leak and odor prevention
Solution Approach 2:
By inverting the lid design to thread onto the bottom, the patent simplifies the sealing arrangement to a single interface location. This inversion consolidates the hermetic seal function into one primary sealing point rather than requiring seals at multiple locations, reducing manufacturing complexity
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 system effectively retains liquids and odors, preventing leakage and gas escape, even when the receptacle is inverted, providing a secure and reusable solution for disposing of various waste types.
Implementation Method 1
a compressible seal between the lid and the receptacle body
Implementation Method 2
preventing leakage and gas escape
Data Source
AI summary
A system and method for preventing leaks from rubbish containing liquids and noxious smells has an air-tight and water-tight reusable trash receptacle. The receptacle uses an inner ring and an outer ring to secure a trash bag. A gasketed lid provides a seal when the lid is engaged with the outer ring. A fabric cover attaches to the outer ring and protects and hides the trash bag held within.