Conical Insert for Inverted Spray Nozzle Precision Marking
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Solution Overview
Problem
Existing inverted aerosol containers with spray nozzles are unable to produce precise, clear lines or symbols when used in an inverted position, resulting in blurred and unclear markings.
Innovation Solution
A conical insert that fits into the spray nozzle exit orifice, narrowing the spray pattern and reducing the spray rate to allow for precise marking, which is removable and reusable, and includes a holder for storage when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional spray nozzle is used in an inverted aerosol container, then the spray pattern is wide and covers large area, but the markings become blurred and unclear
Solution Approach 1:
The spray nozzle is segmented into two functional parts: a conventional nozzle body for maintaining wide spray coverage, and a separate insert component with a small orifice for precise marking. The insert can be removed to restore the original wide spray pattern, allowing the system to switch between coverage and precision modes.
Solution Approach 2:
The insert component introduces a localized restriction at the spray exit orifice, creating a focused jet stream in a specific area while the rest of the nozzle maintains its original wide opening. This local modification enables precise markings without affecting the overall spray coverage capability when the insert is removed.
2Manufacturing precision
If the spray rate is reduced to achieve precise lines, then the marking clarity improves, but the productivity decreases
Solution Approach 1:
The system dynamically adapts its spray characteristics by allowing the user to insert or remove the insert component based on the task requirements. For precise markings, the insert is installed to reduce spray rate and narrow the spray pattern. For high-speed coverage, the insert is removed to restore full spray rate and wide pattern, providing dynamic control over spray performance.
3Adaptability or versatility
If a fixed spray nozzle design is used, then the device structure is simple, but it cannot provide both precise marking and wide coverage
Solution Approach 1:
The nozzle system is divided into a permanent nozzle body and a removable insert. This segmentation allows the basic nozzle structure to remain simple while adding versatility through the optional insert component. The insert can be easily attached or removed without affecting the integrity of the main nozzle structure.
Solution Approach 2:
The spray nozzle system achieves multi-functionality through the optional insert component. The base nozzle provides wide coverage spraying, while the insert enables precise marking. This single addition allows one device to perform multiple functions that would otherwise require separate tools, improving adaptability without significantly increasing overall complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise writing of letters or symbols with atomized paint or marking substances, maintaining the ability to switch back to a traditional fan spray when needed, providing clear and precise lines.
Implementation Method 1
A conical insert that fits into the spray nozzle exit orifice, narrowing the spray pattern and reducing the spray rate
Implementation Method 2
atomized paint or other marking substances delivered by a pressurized container
Data Source
AI summary
A device for modifying the spray pattern of an inverted spray nozzle to allow a user to mark an object with precise and clear writing of letters or symbols. The device is an insert that removably fits into or over an existing invert spray nozzle.


