Maskless Surface-Coating Touch-Up Tool With Sealing Faceplate

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Solution Overview

Problem

Traditional methods for touching up surface coatings, such as chromate conversion coatings on rocket bodies, require extensive masking and chemical preparation, which can damage the surface and result in hazardous waste, especially when applied to vertical surfaces.

Innovation Solution

A maskless touch up tool with a faceplate and handle is used to apply coatings without masking, featuring a sealing interface to contain excess coating and a reservoir to collect it, allowing for precise application and waste reduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional masking methods are used for touch up coating, then coating application precision is improved, but surface damage and hazardous waste increase

Engineering Contradiction:

Improvecoating application precisionVSAvoidsurface damage

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and eliminates the masking step from the traditional touch up process. Instead of using adhesive masking tape that damages the surface, the invention uses a mechanical barrier system consisting of a faceplate with an opening that physically contains the coating application area, thereby achieving precision without surface damage

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The faceplate acts as an intermediary barrier between the coating applicator and the surface. It provides a mechanical containment structure that directs coating flow precisely to the target area without requiring adhesive masking, thus preventing surface damage while maintaining application precision

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If masking is used to prevent coating migration, then coating containment is improved, but device complexity and time consumption increase

Engineering Contradiction:

Improvecoating containmentVSAvoidmasking system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The invention removes the complex masking system (adhesive tape, masking paper, multiple preparation steps) and replaces it with a simple mechanical faceplate structure. This extraction of the masking function reduces device complexity while maintaining coating containment through the faceplate's physical barrier and runoff portion design

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The faceplate is segmented into functional zones: an opening for applicator access, a runoff portion to direct excess coating, and a barrier edge to contain migration. This segmentation of the single faceplate component performs multiple containment functions that previously required multiple separate masking elements

Inventive Principle:

Principle #1Segmentation

3Loss of substance

If absorbent materials are used to catch excess coating, then coating waste is reduced, but hazardous waste generation and disposal complexity increase

Engineering Contradiction:

Improvecoating wasteVSAvoidhazardous waste

Core Design Contradiction:

Loss of substanceVSObject-generated harmful factors

Solution Approach 1:

Instead of allowing excess coating to become hazardous waste through absorption, the invention converts this harmful factor into a beneficial containment feature. The runoff portion is specifically designed to collect and channel excess coating away from the surface, transforming what would be waste into a controlled collection point that prevents environmental contamination

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The runoff portion serves as an intermediary channel between the coating application area and the excess coating collection point. It mediates the flow of excess coating, directing it away from the surface and into a collectible container, thereby preventing hazardous waste generation while maintaining coating containment

Inventive Principle:

Principle #24Intermediary (Mediator)

4Reliability

If chemical preparation methods are used for touch up, then coating adhesion is improved, but surface damage and environmental harm increase

Engineering Contradiction:

Improvecoating adhesionVSAvoidsurface damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention extracts and eliminates the chemical preparation step from the touch up process. By using a mechanical barrier system (faceplate with seal interface) to contain the coating, it removes the need for chemical etching or masking that damages the surface, while still achieving reliable adhesion through proper coating application containment

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250320595A1Maskless touch up tool for surface coatings

Publication Date: 2025.10.16 BLUE ORIGIN MANUFACTURING LLC

AI summary

A maskless touch up tool having a faceplate and handle. The faceplate is placed on a surface for touching up of a coating on the surface. The surface may be on a rocket body. The faceplate may form a seal around a target region of the surface. The faceplate has an opening configured to receive a touch up coating therethrough for application of the touch up coating to the surface. The handle may extend away from the faceplate and be configured for gripping by a user. The tool may include a reservoir, or an attachment for an external container, configured to collect excess touch up coating from the surface. The tool may be used to touch up the surface coating without the need for masking of the surface.