Combined Lid Strainer with Movable Cover for Paint Containers
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Solution Overview
Problem
Existing paint straining solutions require the removal and reinstallation of a separate strainer on paint containers, which is inconvenient for straining and maintaining paint integrity, especially when tinting additives need to be introduced.
Innovation Solution
A combined lid and strainer device with a movable cover and airtight membrane that allows for strained pouring and tinting without removing the lid, featuring a perforated straining area and a separate port for introducing additives while maintaining an airtight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate strainer is used on paint containers, then paint can be strained during pouring, but the lid must be removed and the strainer reinstalled, which is inconvenient and time-consuming
Solution Approach 1:
The patent combines the lid and strainer into a single integrated device. The strainer is permanently attached to the lid structure, eliminating the need to separately install or remove a strainer. When the lid is removed for pouring, the strainer is automatically removed as well, and vice versa, simplifying the operation to a single action rather than multiple steps.
2Ease of operation
If the lid is removed to install a strainer, then paint can be strained, but the paint container is left open and paint may dry or become contaminated
Solution Approach 1:
By merging the lid and strainer functions into one device, the paint container remains sealed when not in use. The integrated design ensures that the straining function is available whenever the lid is on, without compromising the seal or exposing the paint to air and contaminants.
Solution Approach 2:
The cover is designed to be movable between closed and open positions. When closed, it provides an airtight seal over the straining area to prevent paint drying. When opened, it allows paint to be poured through the strainer. This dynamic design allows the system to adapt to different operational needs while maintaining paint integrity when not in use.
3Productivity
If a perforated strainer is used, then paint can be strained effectively, but the perforations may become plugged or dried out when not in use
Solution Approach 1:
The movable cover protects the perforated strainer by closing over it when not in use, preventing paint from drying in the perforations and blocking them. When painting is needed, the cover is opened to expose the strainer for effective strain filtering. This dynamic protection mechanism maintains the reliability of the perforations over time.
Solution Approach 2:
The airtight membrane is positioned to seal the perforations in advance before they can become plugged or dried out. This preliminary protective action ensures that the strainer remains functional and ready for use, preventing the harmful effect of clogged perforations before they occur.
4Ease of operation
If a separate strainer device is used, then paint can be strained, but the device complexity increases with multiple components to manage
Solution Approach 1:
The patent merges multiple functions (lid, strainer, cover, and sealing membrane) into a single integrated device. This reduces the number of separate components from four or more to one unified structure, simplifying the overall system while maintaining all necessary functions for paint straining and protection.
Solution Approach 2:
The integrated lid-strainer device performs multiple functions simultaneously: it seals the paint container, strains paint during pouring, protects the strainer when not in use, and prevents paint drying. This multi-functionality eliminates the need for separate devices for each function, reducing overall device 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
Enables convenient straining and tinting of paint without the need to remove and reinstall the strainer, ensuring paint integrity and preventing drying or plugging of the straining perforations.
Implementation Method 1
a membrane overlying an entirety of the straining area in a position of underlying relation to the closed position of the cover, said membrane providing an airtight seal over the perforations to prevent drying of paint contents of the paint container
Data Source
AI summary
A combined lid and strainer device for a paint container features an outer mounting rim configured for mated fitting onto a rim of the paint container. Within a central circular area surrounded by the rim, there is a perforated a straining area through which paint is pourable. A movable cover is selectively movable between a closed position overlying the perforated straining area, and open positions withdrawn therefrom to allow strained pouring of the paint therethrough. Raised features on the cover are used to secure the cover closed when the lidded container is placed in a paint shaker. A sealing membrane is used, at least initially, seal the perforated area in air-tight fashion to maintain paint freshness. Securement features are usable to secure the flap in both closed and open positions.


