Multi-Contact Face Coating Device for Irregular Surfaces

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Solution Overview

Problem

Existing devices for applying fluid coating materials to building surfaces lack stability and consistency, often resulting in uneven thickness and irregular surfaces due to contact with irregular projections, and fail to smoothly transition between parallel coating lanes.

Innovation Solution

The device features a body with multiple contact faces and a recess to stabilize against surface irregularities, coupled with a flexible conduit system and a smoothening flange to ensure even application and smooth transitions between coating lanes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single contact face is used, then the device structure is simple, but the device stability and coating consistency deteriorate due to contact with surface irregularities

Engineering Contradiction:

Improvedevice structureVSAvoidcoating thickness consistency

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The contact face is segmented into multiple separate contact elements (first contact face on mouthpiece, second contact face on base) instead of a single continuous surface. This segmentation allows each contact face to independently accommodate surface irregularities, preventing the entire device from rocking and ensuring consistent coating thickness despite surface variations.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If multiple contact faces are added to improve stability, then coating consistency improves, but device complexity increases

Engineering Contradiction:

Improvecoating thickness consistencyVSAvoiddevice structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The multiple contact faces (mouthpiece contact face and base contact face) are merged into a single integrated device structure where the base extends along the handle and integrates with the mouthpiece assembly. This merging provides stability benefits of multiple contact points while avoiding the complexity of separate adjustable components.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If parallel coating lanes are applied to cover large areas, then productivity increases, but clear demarcations and irregular surfaces appear between lanes

Engineering Contradiction:

Improvecoating application speedVSAvoidsurface uniformity between lanes

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

A smoothening flange portion acts as an intermediary element between adjacent parallel coating lanes. This flange portion extends along the side walls of the mouthpiece and physically smoothes the transition zone between lanes, eliminating clear demarcations and creating a uniform surface appearance while allowing rapid parallel lane application.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3963146B1A multi contact face device for applying a fluid coating material to a building surface

Publication Date: 2023.03.29 FASTER PLASTER APS

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AI summary

The present invention relates to a device for applying a fluid coating material to a building surface, such as to a building wall, by moving the device across the surface in contact therewith as the fluid coating material is being continu- ously supplied to the device.