Pump Dispenser Segmented Chamber for Slim High-Dose Packaging
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Solution Overview
Problem
Existing airless pump dispensers for high viscosity products are limited by the size of the pump chamber, requiring larger packaging to achieve higher dosages, which contradicts consumer preferences for slim and elegant designs.
Innovation Solution
A pump dispenser design featuring a slidable follower piston and a pump assembly with an annular sleeve arrangement, helical spring, and dual single-way valves that form a vacuumed chamber, allowing for a larger chamber space without increasing the overall size, by separating the piston sealer from the actuator mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the pump chamber space is enlarged to increase dosage, then the dosage amount is improved, but the overall pump head size increases
Solution Approach 1:
The pump chamber is segmented into two distinct spaces: a first space defined by the actuator and piston, and a second space defined by the annular collar portion and base wall portion. This segmentation allows the pump chamber to be expanded without proportionally increasing the external dimensions of the pump head, as the second space utilizes the annular region between the actuator and container wall.
Solution Approach 2:
The invention utilizes the annular dimension (radial space between actuator and container wall) to create additional pump chamber volume through the second space defined by the annular collar portion. This adds volume in a different dimensional direction rather than simply extending the linear dimensions of the pump head.
2Quantity of substance
If the pump chamber space is enlarged to increase dosage, then the dosage amount is improved, but the manufacturing and assembly expenses increase
Solution Approach 1:
The annular collar portion and base wall portion are merged into a single integrated component that forms part of the actuator assembly. This merging reduces the total number of separate parts that need to be manufactured and assembled, thereby reducing manufacturing and assembly expenses while still providing the expanded pump chamber volume.
Solution Approach 2:
The annular collar portion serves multiple functions: it defines the second pump chamber space, provides structural support for the piston, and forms part of the actuator mechanism. This multi-functionality reduces the need for additional separate components, simplifying both manufacturing and assembly processes.
3Device complexity
If the piston is connected to the actuator to achieve slidable movement, then the pump mechanism is simplified, but the pump chamber space is limited
Solution Approach 1:
The pump chamber is divided into two spaces: the first space between the actuator and piston, and the second space between the annular collar portion and base wall portion. This segmentation allows the piston to remain connected to the actuator for simplified mechanics while the second space provides additional volume without compromising the mechanical connection.
Solution Approach 2:
The annular collar portion acts as an intermediary element that defines the second pump chamber space without interfering with the direct mechanical connection between the piston and actuator. It mediates the space utilization while preserving the simplicity of the piston-actuator linkage.
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 high dosage dispensing of high viscosity products in a slim and compact container format, reducing manufacturing costs and maintaining operational reliability and simplicity.
Implementation Method 1
a downwardly projecting base wall portion and an annular collar portion in between, wherein the base wall portion is slidably engaged with the piston sealer and supported by the helical spring in the annular space of the annular sleeve arrangement
Implementation Method 2
the base wall portion, the annular collar portion, the piston sealer, the upper single-way valve and the lower single-way valve form a vacuumed chamber
Data Source
AI summary
A pump dispenser and a pump head for dispensing a fluid product. The pump dispenser includes a container containing the fluid product to be dispensed, a slidable follower piston positioned at the bottom the container, and a pump assembly coupled at the upper portion of the container. The pump dispenser enables relatively high product dose dispensing with a consumer preferred compact container configuration. The pump dispenser can be an airless pump dispenser and can be used to dispense high viscosity fluid products.