Flat Panel Spray Applicator for Non-Round Surface Precision
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Solution Overview
Problem
Conventional spray applicators with conical nozzles are inefficient for non-round surfaces, leading to unwanted color application and spillage, particularly in hair coloring where color often reaches the scalp.
Innovation Solution
A universal spray applicator with a flat panel body and adjustable nozzles at various angles (65, 73, 80, and 110 degrees) that can be mounted on the outer or inner surface of spray containers, allowing for semi-circular or semi-elliptical spray patterns and rotation to prevent droplet overlap, enabling precise application on non-round surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional conical nozzles are used for spray application, then complete spray coverage in round or oval shape is achieved, but spray precision on non-round surfaces deteriorates leading to spillage and unwanted color application
Solution Approach 1:
The patent replaces the conventional symmetric conical nozzle with an asymmetric flat fan nozzle that produces a rectangular or square spray pattern. This asymmetric spray pattern matches the asymmetric geometry of non-round surfaces (such as the head shape), enabling precise color application without spillage while maintaining complete coverage of the target area.
2Ease of operation
If conventional spray applicators are used on non-round surfaces, then spray application is simplified, but color spillage increases particularly on scalp areas
Solution Approach 1:
The flat fan nozzle is designed to concentrate spray output in a specific rectangular or square pattern that locally matches the geometry of the target surface (such as the head). This localized spray concentration ensures that color is deposited only where needed, preventing harmful spillage to adjacent areas like the scalp, while maintaining ease of operation through the simple spray mechanism.
3Device complexity
If conventional nozzles are used, then spray device structure is simple, but spray pattern adaptability to different surface shapes deteriorates
Solution Approach 1:
The patent changes the fundamental spray pattern parameter from a circular/oval pattern (produced by conical nozzles) to a rectangular/square pattern (produced by flat fan nozzles). This parameter change in spray geometry provides adaptability to non-round surfaces while maintaining the simplicity of the nozzle structure, as the flat fan nozzle itself remains a simple component that can be integrated into existing spray devices.
Data Source
AI summary
An applicator (10) for spray application having a flat panel body (12) having a proximal end (14) and a distal end (16). The said proximal end (14) of the said flat panel body (12) is structured as a connector in a circular shape forming a rim (22) having an inner surface (24) and an outer surface (26), wherein, the said inner surface (24) of the said rim (22) functions as a connector to be fitted perfectly with the lid of a universal sprayer (28). Said applicator enables the application of spray in a straight line rather than a circular or oval shape.