Paint Roller Trim Guard with Pivoting Shield

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Solution Overview

Problem

Existing paint rollers lack a deployable shield to prevent accidental painting of trim areas, leading to inefficiencies and the need for additional protective measures like tape.

Innovation Solution

A paint roller with a trim guard featuring a pivoting shield assembly that can be deployed over the edge of the roller to protect trim areas from paint, allowing for precise painting without damaging the trim.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a paint roller is used to paint walls, then painting efficiency is improved, but trim areas are accidentally painted

Engineering Contradiction:

Improvepainting efficiencyVSAvoidaccidental painting of trim

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

A shield assembly is introduced as an intermediary component between the paint roller and the trim. The shield assembly includes a shield member that can be positioned between the roller and the trim to block paint from reaching the trim areas, while still allowing the roller to effectively paint the wall surfaces.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shield assembly is designed with pivotal connections that allow it to be dynamically adjusted during painting operations. The shield member can be rotated between a first position (blocking the roller from painting the trim) and a second position (allowing the roller to access the trim area), providing adaptability during the painting process.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If tape is used to protect trim areas, then paint spillage is prevented, but additional time and complexity are required

Engineering Contradiction:

Improvepaint spillage on trimVSAvoidtime for protective measures

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The shield assembly is designed to be self-positioning and self-adjusting during the painting process. The pivotal connections allow the shield member to automatically adapt to the roller's movement and positioning, eliminating the need for manual adjustment or removal of protective measures during painting operations.

Inventive Principle:

Principle #25Self-service

3Object-affected harmful factors

If a shield is added to the paint roller, then trim protection is improved, but device complexity increases

Engineering Contradiction:

Improvetrim protectionVSAvoidpaint roller structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The shield assembly is segmented into separate components including a shield member, first pivotal connection, and second pivotal connection. This segmentation allows each component to be independently manufactured and assembled, simplifying the overall construction while maintaining the protective function. The modular design reduces complexity compared to an integrated shield structure.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12263502B1Paint roller with trim guard

Publication Date: 2025.04.01 BEST ELGIN

AI summary

A paint roller with trim guard including a handle assembly, a roller assembly, and a shield assembly. The handle assembly includes a handle. The roller assembly includes a roller. The roller is connected to the handle. The roller is dipped in paint. The roller absorbs paint. The roller is capable of painting a predetermined surface. The shield assembly includes a shield. The shield is pivotally attached to the roller to protect the top portion, the left portion, and the right portion of the roller from accidentally painting trim.