SEQUENTIALLY ACTIVATED MULTI-DIAPHRAGM FOAM PUMPS, REFILL UNITS AND DISPENSER SYSTEMS
First Claim
Patent Images
1. A foam dispenser comprising:
- a housing;
a drive motor;
a foam pump operatively coupled to the drive motor;
the foam pump is secured to the housing and the foam pump includes;
a housing;
a molded multi-chamber diaphragm;
the molded multi-chamber diaphragm comprising;
a liquid pump chamber;
two or more air pump chambers; and
one or more outlet valves;
a mixing chamber downstream of the one or more outlet valves for mixing foamable liquid from the liquid pump chamber with air from each of the two or more air pump chambers;
a foam cartridge in fluid communication with the mixing chamber; and
an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge.
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Accused Products
Abstract
An exemplary foam dispenser includes a housing, a drive motor and a foam pump operatively coupled to the drive motor. The foam pump is secured to the housing and the foam pump includes a housing and a molded multi-chamber diaphragm. The molded multi-chamber diaphragm includes a liquid pump chamber, two or more air pump chambers; and an outlet valve. A mixing chamber is included and located downstream of the outlet valve for mixing foamable liquid from the liquid pump diaphragm with air from each of the two or more air pump chambers. In addition, a foam cartridge and an outlet for dispensing foam are also included.
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Citations
20 Claims
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1. A foam dispenser comprising:
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a housing; a drive motor; a foam pump operatively coupled to the drive motor; the foam pump is secured to the housing and the foam pump includes; a housing; a molded multi-chamber diaphragm; the molded multi-chamber diaphragm comprising; a liquid pump chamber; two or more air pump chambers; and one or more outlet valves; a mixing chamber downstream of the one or more outlet valves for mixing foamable liquid from the liquid pump chamber with air from each of the two or more air pump chambers; a foam cartridge in fluid communication with the mixing chamber; and an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A refill unit for a foam dispenser comprising:
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a container for holding foamable liquid; a foam pump secured to the container wherein the foam pump includes; a housing; a molded multi-chamber diaphragm; the molded multi-chamber diaphragm comprising; a liquid pump chamber; and three air pump chambers; an inlet valve; and an outlet valve a mixing chamber downstream of the outlet valve for mixing foamable liquid from the liquid pump chamber with air from each of the three air pump chambers; a foam cartridge in fluid communication with the mixing chamber; and an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge. - View Dependent Claims (15)
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16. A foam dispenser comprising:
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a dispenser housing; a foam pump secured to the housing wherein the foam pump includes; a pump housing; a molded multi-chamber diaphragm; the molded multi-chamber diaphragm comprising; a liquid pump chamber; and two or more air pump chambers; a rotatable drive mechanism for sequentially compressing the liquid pump chamber and two or more air pump chambers; the rotatable drive mechanism coupled to a drive motor; a mixing chamber downstream of the liquid and air pump chambers for mixing foamable liquid from the liquid pump chamber with air from each of the three air pump chambers; a foam cartridge in fluid communication with the mixing chamber; and an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge. - View Dependent Claims (17, 18, 19, 20)
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Specification