Multi-Reservoir Fluid Dispenser With Leak-Safe Rotating Push Button
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Solution Overview
Problem
Existing fluid dispensers suffer from fluid product leakage or residue at the offset orifice, require complex barrel rotation, and have unstable design with separate push button and barrel parts.
Innovation Solution
A fluid dispenser with a push button that forms secondary outlet orifices matching secondary reservoirs, integrated as a removable cartridge unit, allowing easy rotation and stable alignment with a fixed stud for seamless delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the push button and barrel are separate parts that can be rotated with respect to one another, then the dispenser allows flexible operation, but fluid product leakage or residue occurs at the offset orifice
Solution Approach 1:
The patent merges the push button and barrel into a single integral unit where the push button is rotatably mounted on the barrel. This integration ensures that the offset orifice remains properly aligned with the stud during rotation, preventing fluid leakage while maintaining operational flexibility. The push button and barrel move together as a coordinated assembly rather than independent parts.
2Device complexity
If the barrel is rotatably mounted under a push button that is prevented from rotating, then the dispenser structure is simplified, but the rotation of the barrel becomes more complex and stability is reduced
Solution Approach 1:
Instead of preventing the push button from rotating, the patent inverts the approach by making the push button rotatable while preventing the barrel from rotating independently. The push button is mounted on the barrel with rotational freedom, and the offset orifice on the push button aligns with the stud when the push button is in the correct angular position. This inversion simplifies the overall structure while ensuring stable and precise rotation control.
3Productivity
If the push button is angularly oriented to align the offset orifice with the fixed stud, then fluid delivery is enabled, but the alignment precision and stability are insufficient
Solution Approach 1:
The patent incorporates preliminary alignment features during the assembly of the push button on the barrel. The push button is pre-oriented at the correct angular position relative to the barrel, with the offset orifice aligned with the stud. This preliminary action ensures that when the dispenser is assembled and operated, the alignment is already established, eliminating the need for complex adjustments and ensuring high precision fluid delivery.
4Ease of repair
If the push button and barrel are separate parts, then replacement of the barrel is simpler, but the overall stability and reliability of the dispenser is reduced
Solution Approach 1:
The patent segments the dispenser into modular components: the barrel can be replaced independently while the push button remains on the main body. The push button is rotatably mounted on the barrel, allowing the barrel to be removed and replaced without disturbing the push button assembly. This segmentation maintains ease of repair while ensuring reliability through proper mechanical connection and alignment features between the modular parts.
Data Source
AI summary
A dispenser having a dispensing member connected to a main reservoir containing a first fluid product, the dispensing member communicating with a main axial outlet orifice, and a plurality of secondary reservoirs containing a second fluid product and each having a mobile wall, and a push-button that can be moved along an actuation axis, carrying with it the main outlet orifice. The push-button defines as many secondary outlet orifices as there are secondary reservoirs, the secondary outlet orifices being distinct from the main axial outlet orifice, each secondary outlet orifice being fed from a secondary reservoir in response to the movement of its mobile wall, which movement is brought about by the movement of the push-button along the actuation axis.