Unitary Insert for Waste Containers Using Pivotable Bag Engagement
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Solution Overview
Problem
Existing waste disposal devices are inefficient in retaining and removing bags securely, leading to unnecessary costs and waste due to costly canisters and polypropylene headers, and often require frequent replacement.
Innovation Solution
A bag support structure with upper and lower engagement surfaces and an attachment mechanism that allows for secure retention and easy insertion/removal of bags, utilizing a pivotable mechanism to manage bag engagement and prevent unintentional release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-use bag with foldable plastic header is used, then bag retention is improved, but device complexity and manufacturing cost increase due to welding or bonding requirements
Solution Approach 1:
The patent employs a disposable bag assembly that includes a bag and a header formed as a single unit. The header is designed to be inserted into and removed from the container easily, eliminating the need for welding or bonding. This disposable approach reduces manufacturing complexity while maintaining reliable bag retention during use.
Solution Approach 2:
The header and bag are formed as a single integrated unit, eliminating the need for separate welding or bonding operations. This merging of components simplifies the overall device structure and reduces manufacturing steps while ensuring secure bag retention through the unified design.
2Reliability
If costly canisters and polypropylene headers are used, then bag retention is improved, but manufacturing cost increases
Solution Approach 1:
The patent uses a disposable bag assembly with a header that can be easily manufactured and replaced. This eliminates the need for expensive, reusable canisters and polypropylene headers, significantly reducing manufacturing costs while maintaining effective bag retention through the simplified disposable design.
Solution Approach 2:
The header is designed as a simple, reproducible component that can be mass-produced at low cost. The standardized design allows for efficient manufacturing and replacement, reducing the need for expensive proprietary components while maintaining functional reliability.
3Reliability
If frequent replacement of canisters is required, then bag retention is maintained, but loss of time increases due to regular maintenance
Solution Approach 1:
The bag assembly is pre-formed with the header integrated, allowing for quick insertion and replacement. This preliminary preparation of complete bag assemblies enables rapid maintenance operations, reducing the time required for replacement while ensuring reliable bag retention from the start of each new bag's use.
4Ease of operation
If a pivotable mechanism is used for bag engagement, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent incorporates a pivotable mechanism that allows the header to rotate or pivot during insertion and engagement. This dynamic movement makes it easier to align and insert the bag assembly into the container, improving ease of operation. The mechanism is designed to be simple, requiring minimal additional components while providing significant operational advantage.
Data Source
AI summary
Waste container includes a base defining a waste-receiving compartment, and an insert supported on the base and adapted to engage a peripheral edge of a bag that extends into the compartment while maintaining an opening of the bag unobstructed. The insert has at least one bag-engagement edge. A movable closure component has a first engagement position in which the closure component engages with the insert to press the bag when present against the bag-engagement edge(s) of the insert, and a second non-engagement position in which the closure component is separated from the bag-engagement edge(s) of the insert. A lid is attached to the base and movable between a first, closed position covering the opening of the bag and a second, open position in which it does not obstruct the opening of the bag.