Collapsible Paint Can Shield with Radial Segments
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Solution Overview
Problem
Existing paint can covering devices fail to prevent rust from falling into the paint, exacerbating skinning and evaporation issues, as they are not designed to intercept debris and often scrape the can's rim, causing rust to fall into the paint.
Innovation Solution
A collapsible paint can shield with overlapping sectors that rotate about a pivot point, allowing it to expand into a disc shape for full coverage and collapse into a pie shape for easy insertion, featuring a lip that engages the can's circumference to prevent rust and reduce evaporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a covering device is inserted into the can to protect paint from residual air, then evaporation and skinning are reduced, but the device may scrape rust from the rim and cause it to fall into the paint
Solution Approach 1:
The shield is divided into multiple radial segments that can be collapsed together for insertion and then expanded to form a complete circular barrier. This segmentation allows the device to be inserted without scraping the rim while still providing full circumferential protection when expanded.
Solution Approach 2:
The shield transitions from a collapsed state during insertion to an expanded state during use. This dynamic transformation allows the shield to navigate the rim opening without contact, then expand to engage the inner wall and provide comprehensive protection against rust and evaporation.
2Reliability
If a rigid covering device is used to protect paint, then protection effectiveness is improved, but insertion difficulty increases due to the smaller rim diameter
Solution Approach 1:
The shield is designed to be flexible and collapsible during insertion, then rigid and expanded during use. This dynamic behavior allows easy passage through the narrow rim opening while maintaining structural integrity and protection effectiveness when deployed inside the can.
Solution Approach 2:
The radial segments of the shield can be nested or collapsed together to reduce the insertion profile, allowing the device to pass through the rim opening. Once inside, the segments are expanded to form the full protective structure.
3Area of stationary object
If the shield outer diameter is made equal to or greater than the can inner diameter for full coverage, then protection coverage is improved, but insertion difficulty increases
Solution Approach 1:
The shield's diameter is dynamic rather than fixed. During insertion, the shield is collapsed to a smaller profile that easily passes through the rim. Once positioned inside the can, the shield expands to achieve full coverage with an outer diameter equal to or greater than the can's inner diameter.
Solution Approach 2:
The shield consists of multiple radial segments that can be collapsed together for insertion and then fanned out to provide complete circumferential coverage. This segmented structure allows the shield to transition from a compact insertion state to a fully expanded protective state.
Data Source
AI summary
Disclosed is a device for protecting and preserving a substance in a container. The device may include a plurality of overlapping sectors capable of rotating about a pivot point such that the device has a substantially disc shape when fully expanded and a substantially pie shape when partially expanded; and a lip defining an outer diameter of the device when fully expanded. The outer diameter of the device is equal to or greater than an inner diameter of the inner surface of the container.