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US 2022/0008941 A1Published application
Two stage foam pump and method of producing foam
AssigneeOP-Hygiene IP GmbH
InventorsHeiner Ophardt, Andrew Jones
Life of this patent
Estimating the term…
Abstract
A foam dispenser with a pump mechanism that mixes a liquid with air to generate foam. The pump mechanism includes a first stage pump and a second stage pump. The first stage pump delivers the liquid and a first volume of the air through a first foam generator to generate a first foam. The second stage pump delivers the first foam and a second volume of the air through a second foam generator to generate a second foam.
Claims20
A method of generating foam comprising:
- delivering a liquid and a first volume of air through a first foam generator to generate a first foam;
- and
- delivering the first foam and a second volume of air through a second foam generator to generate a second foam.
Dependencies are inferred from the claim text.