Maskless Touch-Up Tool With Sealed Faceplate for Coating Control

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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 generate hazardous waste, especially on surfaces like shot-peened panels and vertical structures.

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 occurs and hazardous waste is generated

Engineering Contradiction:

Improvecoating application precisionVSAvoidsurface damage

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a faceplate as an intermediary barrier between the coating applicator and the surface. The faceplate forms a sealed enclosure that directs excess coating away from the surface while allowing precise application through a controlled opening, eliminating the need for traditional adhesive masking that damages the surface

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts the masking function from the coating application process by using a reusable faceplate assembly that can be removed and replaced. This separates the protective function from the coating application, allowing the surface to remain unmasked and undamaged while still achieving precise coating placement

Inventive Principle:

Principle #2Taking out (Extraction)

2Manufacturing precision

If traditional masking methods are used for touch up coating, then coating application precision is improved, but hazardous waste is generated

Engineering Contradiction:

Improvecoating application precisionVSAvoidhazardous waste

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The patent implements a system where excess coating is collected in a reservoir attached to the faceplate, allowing the coating material to be recovered and reused. This eliminates the need to discard excess coating as hazardous waste while maintaining precise application control

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The faceplate acts as an intermediary containment structure that captures excess coating before it can become hazardous waste. The sealed enclosure and reservoir system prevent environmental contamination while allowing precise coating application

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If absorbent materials are used to prevent drippage, then coating control is improved, but hazardous waste increases and disposal complexity increases

Engineering Contradiction:

Improvecoating controlVSAvoidhazardous waste

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a faceplate with a sealed enclosure and reservoir as an intermediary system to control excess coating. This replaces absorbent materials with a containment and collection system that prevents drippage while allowing easy drainage and reuse of the coating material

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent uses gravity-driven fluid flow through a drainage system in the faceplate to control and collect excess coating. The hydraulic design allows excess coating to drain into a reservoir for collection and reuse, eliminating the need for absorbent materials and reducing hazardous waste

Inventive Principle:

Principle #29Pneumatics and hydraulics

4Reliability

If chemical preparation methods are used for touch up, then coating adherence is improved, but surface damage occurs

Engineering Contradiction:

Improvecoating adherenceVSAvoidsurface damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent performs preliminary action by pre-positioning the faceplate on the surface before applying the coating. The sealed enclosure and controlled opening are established in advance, allowing coating application without requiring chemical preparation or masking that would damage the surface

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250320594A1Maskless 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.