Pump housing arrangement and use of a dispenser pump
AssigneeKao Germany GmbH
InventorFrank Zeiter
Life of this patent
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Abstract
Pump housing arrangements and methods of dispensing liquid for cosmetic applications from dispenser pumps are provided. The pump housing arrangements comprise a chamber, an inlet channel, an outlet channel, and a movable piston, wherein the chamber comprises a flexible wall part adapted to be expanded outwards with respect to the inside volume of the chamber at an increasing inside pressure of the chamber, and a blocking element relative moveable with respect to the chamber between a blocking position and an operating position is provided. The blocking element blocks an expansion of the wall part in the blocking position and enables the expansion of the wall part in the operating position.
Claims16
A pump housing arrangement for a dispenser pump, comprising:
- a chamber for receiving a fluid to be dispensed inside an inside volume of the chamber;
- an inlet channel for sucking in the fluid into the chamber;
- an outlet channel for dispensing the fluid out of the chamber;
- and
- a movable piston bordering an axial side of the chamber,
- wherein
- the chamber comprises a flexible wall part adapted to be expanded outwards with respect to the inside volume of the chamber at an increasing inside pressure of the chamber,
- a blocking element relative moveable with respect to the chamber between a blocking position and an operating position is provided, and
- the blocking element blocks an expansion of the flexible wall part in the blocking position and enables the expansion of the flexible wall part in the operating position.
Dependencies are inferred from the claim text.