Dual-Chamber Pump Dispenser for Separate-Until-Use Mixing
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Solution Overview
Problem
Existing pump dispensers cannot effectively keep product ingredients separate until use, leading to stability issues and reduced shelf life, and do not allow for user interaction during mixing.
Innovation Solution
A dual chamber pump dispenser with a piston assembly, housing, and sealing cap that separates ingredients until use, allowing for user-controlled mixing and dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If product ingredients are kept separate in different containers until use, then stability and shelf life are improved, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where an inner container holding a second ingredient is placed inside the outer pump container holding a first ingredient. The inner container includes a dispensing tip that extends through the outer container's closure, allowing both ingredients to be dispensed through a single actuator without requiring multiple separate containers or complex assembly mechanisms.
Solution Approach 2:
The patent combines multiple storage functions into a single integrated container system. The outer container stores the first ingredient while the inner container stores the second ingredient, and both are dispensed through a unified pump mechanism controlled by a single actuator, merging what would traditionally require separate containers and dispensing systems.
2Reliability
If multiple ingredients are stored separately, then product effectiveness is enhanced, but ease of operation deteriorates
Solution Approach 1:
The nested container design allows both ingredients to be dispensed simultaneously through a single actuator press. The inner container's dispensing tip extends through the outer container's closure, creating a unified dispensing path that maintains ease of operation despite storing multiple ingredients separately.
Solution Approach 2:
The patent extracts the second ingredient into a separate inner container while maintaining its integration with the outer container system. This extraction allows the second ingredient to be kept separate for effectiveness while the unified dispensing mechanism preserves ease of operation by allowing both ingredients to be released through a single actuator.
3Productivity
If ingredients are mixed automatically, then productivity is improved, but user interaction and mixing control are lost
Solution Approach 1:
The system allows users to control the mixing process themselves by pressing the actuator to dispense ingredients in desired ratios and sequences. The pump mechanism automatically handles the mechanical aspects of dispensing both ingredients, while the user maintains control over the mixing process, combining self-service automation with user interaction.
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
Ensures ingredient stability and extended shelf life while enabling user interaction and effective mixing of ingredients.
Implementation Method 1
When the actuator 10 is pushed down for a first time by a user, the piston assembly 70 moves to push down the connecting stem 84, which pushes down the sealing cap 90 to open the storage chamber 82
Data Source
AI summary
A pump dispenser having a bottle with a neck and a pump assembly. The pump assembly includes an actuator, a closure connected to the actuator and coupled to the neck of the bottle, a dip tube, and a dual chamber pump. The dual chamber pump includes a piston assembly, a sealing cap, and a housing, which includes a pump chamber, a storage chamber having a cavity, and a core. The sealing cap is rigidly connected to the core and closes the storage chamber at a lower portion such that the substance to be released remains stored in the storage chamber cavity. When the actuator is pushed down for a first time by a user, a piston assembly moves to push down a connecting stem, which pushes down the sealing cap to open the storage chamber for releasing the substance contained in the storage chamber from the bottle.