Dual-Chamber Pump Assembly for First-Use Ingredient Release
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Solution Overview
Problem
Existing pump dispensers lack the ability to keep product ingredients separate until use, which can lead to stability issues and reduced shelf life, and do not allow for user interaction during mixing, limiting the variety of ingredients that can be used.
Innovation Solution
A dual chamber pump dispenser with a housing containing a pump chamber and a storage chamber, where the storage chamber keeps the substance separate from the formulation until use, allowing for mixing and user interaction during 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 due to multiple compartments and vessels
Solution Approach 1:
The pump dispenser is divided into multiple independent compartments including a first compartment for formulation and a second compartment for substance, allowing separate storage of incompatible ingredients while maintaining a single integrated device structure
Solution Approach 2:
The second compartment containing the substance is nested within or integrated with the first compartment structure, with the pump mechanism serving both compartments simultaneously, reducing overall device complexity while maintaining separation of ingredients
2Reliability
If multiple ingredients are stored separately in different containers, then ingredient compatibility is improved, but ease of operation deteriorates as users must extract and mix contents manually
Solution Approach 1:
Multiple compartments for different ingredients are merged into a single pump dispenser unit with a unified pump mechanism that can access and dispense contents from both compartments, eliminating the need for separate extraction and mixing operations
Solution Approach 2:
The pump mechanism is designed to serve multiple functions by accessing both the first compartment (formulation) and second compartment (substance) through a single operational interface, allowing users to obtain mixed dispensate without manual mixing
3Device complexity
If a single compartment is used in the pump dispenser, then device complexity is reduced, but adaptability deteriorates as it cannot accommodate incompatible ingredients
Solution Approach 1:
The single pump dispenser structure is segmented into multiple compartments including a first compartment for formulation and a second compartment for substance, enabling the device to accommodate incompatible ingredients while maintaining overall structural simplicity
Solution Approach 2:
Different compartments within the pump dispenser are designed with specific local qualities suitable for different ingredient types, with the pump mechanism adapted to access and mix contents from compartments with different properties
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 stability and extended shelf life of product ingredients by keeping them separate until use, while enabling user interaction and wider ingredient usage through mixing options.
Implementation Method 1
a spring (73)
Implementation Method 2
the piston assembly (70) moves to push down the connecting stem (84), which pushes down both the upper cap (93) and the sub-stem (95) of the sealing cap (90)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Described herein, a pump dispenser comprising: a bottle comprising a neck having a neck landing zone; a pump assembly comprising: an actuator having a cavity therein; 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 comprises a piston assembly; a housing including a pump chamber, a storage chamber and a core; and a sealing cap. The piston assembly is interior to the pump chamber and slidably engaged with the pump chamber. The storage chamber cavity comprises a substance to be released in a formulation contained in the bottle. The core comprises a connecting stem. The sealing cap is rigidly connected to the core and closes the storage chamber 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, the piston assembly moves to push down the connecting stem, which pushes down the sealing cap to open the storage chamber for releasing the substance contained in the storage chamber in the bottle.