Paint Bucket Lid Sealing Layout to Prevent Debris and Drying

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Solution Overview

Problem

Conventional paint sprayers face issues with debris falling into the paint bucket and paint drying, leading to clogging and surface imperfections due to debris and dried paint mixing with the paint, necessitating frequent filter cleaning.

Innovation Solution

A modified paint bucket lid with four openings and split rubber stoppers, locking rings, and a strainer bag to secure the primer and suction units, preventing debris entry and paint drying by sealing and insulating the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the paint bucket is left open for the primer unit and suction unit to be positioned, then the components can be easily accessed and installed, but debris falls into the bucket and paint dries

Engineering Contradiction:

Improveaccessibility of primer unit and suction unitVSAvoiddebris contamination and paint drying

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The lid is segmented with multiple openings of different sizes: a first opening for the primer unit, a second opening for the suction unit, and a third opening as an air vent. This segmentation allows each component to be accessed through its designated opening while the rest of the lid remains closed to prevent contamination and drying.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lid have different properties: the first and second openings are equipped with sealing mechanisms (rubber stoppers and locking rings) to prevent contamination, while the third opening is specifically designed as an air vent to allow airflow. This local differentiation resolves the contradiction by providing targeted access where needed while maintaining protection elsewhere.

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If a conventional lid is used on the paint bucket, then the paint is protected from drying, but debris can still fall in and the primer unit and suction unit cannot be positioned

Engineering Contradiction:

Improvepaint drying preventionVSAvoidpositioning of primer unit and suction unit

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The lid is divided into multiple functional zones with specific openings: the first opening accommodates the primer unit, the second opening accommodates the suction unit, and these openings are sealed with rubber stoppers and locking rings when not in use. This segmentation maintains overall lid integrity for paint protection while providing localized access points for component positioning.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the paint bucket is covered to prevent paint from drying, then paint freshness is maintained, but the system requires daily disassembly and reassembly

Engineering Contradiction:

Improvepaint freshness maintenanceVSAvoiddaily cleaning and reassembly time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The lid is pre-configured with all necessary openings and sealing mechanisms in their proper positions. The rubber stoppers and locking rings are positioned to seal the openings when components are not in use. This preliminary configuration allows the system to remain assembled and covered throughout the day, eliminating the need for daily disassembly and reassembly while maintaining paint freshness.

Inventive Principle:

Principle #10Preliminary action

4Manufacturing precision

If filters are used in the paint sprayer to prevent debris from passing through, then paint quality is maintained, but the filters become clogged and the sprayer stops working

Engineering Contradiction:

Improvepaint surface qualityVSAvoidsprayer continuous operation

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The lid with its sealed openings prevents debris from entering the paint bucket in the first place, performing a preliminary filtration function at the source. This proactive prevention reduces the burden on the sprayer filters, allowing them to operate continuously without clogging while maintaining paint surface quality.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250368402A1Airless paint sprayer lid and paint bucket

Publication Date: 2025.12.04 ROMAN ROBERT

AI summary

A paint sprayer system includes a bucket lid three smaller openings and a fourth larger opening. One smaller opening is to receive a primer unit and another smaller opening is to receive a suction unit while the third smaller opening serves as an air vent. The larger opening is used to add paint to the bucket as needed. The system further includes stoppers, locking rings and caps. In practice, the stoppers and locking rings are used to insulate, seal and/or cover openings in the bucket lid and secure the primer unit and suction unit in the bucket. The paint sprayer system as described reduces or eliminates debris from the paint and further prevents paint from drying in the bucket. The paint sprayer system also eliminates much of the daily cleaning associated with conventional paint sprayer systems.