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US 11,766,687 B2Granted
Sequentially activated multi-diaphragm foam pumps, refill units and dispenser systems having a non-uniform wobble plate
AssigneeGOJO Industries, Inc.
InventorJeffrey S. Louis
Life of this patent
Estimating the term…
Abstract
A wobble plate for a sequentially activated multi-diaphragm foam pump includes three or more wings, a wobble plate shaft, and an aperture located in each of the three or more wings. A first wing is configured to have a first distance from first contact surface of a first pump diaphragm. A second wing is configured to have a second distance from a first contact surface on a second pump diaphragm, and a third wing is configured to have substantially the second distance from a first contact surface on a third pump diaphragm.
Claims20
A foam dispenser comprising:
- a housing;
- a receiver for receiving a container of foamable liquid;
- a foam pump is in fluid communications with the container of foamable liquid when the container of foamable liquid is inserted in the receiver;
- the foam pump includes:
- a housing;
- a molded multi-diaphragm pumping member having a liquid pump diaphragm and one or more air pump diaphragms;
- one or more outlet valves located downstream of the liquid pump diaphragm and the one or more air pump diaphragms;
- a mixing chamber located downstream of the one or more outlet valves for mixing foamable liquid from the liquid pump diaphragm with air from one or more air pump diaphragms;
- a drive motor;
- the foam pump operatively coupled to the drive motor by a wobble plate;
- wherein the wobble plate has two or more wings;
- wherein a first wing has a first wing profile distance between a first surface that contacts a body of the liquid pump diaphragm and a second surface that contacts a retention member of the liquid pump diaphragm and the second wing has a second wing profile distance between a first surface that contacts a body of one of the one or more air pump diaphragm and a second surface that contacts a retention member of the one of the one or more air pump diaphragm;
- and
- wherein the first wing profile distance is different than the second wing profile distance;
- and
- an outlet for dispensing foam.
13 more elements
A sequentially activated foam pump comprising:
- a housing;
- a liquid inlet;
- a molded multi-diaphragm pumping member;
- the molded multi-diaphragm pumping member comprising:
- a liquid pump diaphragm having a first volume;
- two or more air pump diaphragms each having a second volume;
- wherein the first volume is less than the second volume;
- 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 wobble plate;
- wherein the wobble plate has two or more wings;
- wherein a first wing has a first wing profile distance and a second wing has a second wing profile distance;
- wherein the first wing connects to the liquid pump diaphragm;
- wherein the second wing connects to one of the two or more air pump diaphragms;
- and
- wherein the first wing profile distance is different than the second wing profile distance;
- and
- an outlet for dispensing foam.
16 more elements
A sequentially activated foam pump comprising:
- a housing;
- a molded multi-diaphragm pumping member having a liquid pump diaphragm and one or more air pump diaphragms;
- one or more outlet valves located downstream of the liquid pump diaphragm and the one or more air pump diaphragms;
- a mixing chamber located downstream of the one or more outlet valves for mixing foamable liquid from the liquid pump diaphragm with air from one or more air pump diaphragms;
- a drive motor;
- a non-uniform wobble plate;
- the foam pump operatively coupled to the drive motor by the non-uniform wobble plate;
- wherein the non-uniform wobble plate comprises two or more wings;
- wherein the two or more wings each have a pump diaphragm contact surface;
- wherein a first wing has a first pump diaphragm contact surface that is a first distance away from a first pump diaphragm;
- wherein a second wing has a second pump diaphragm contact surface that is a second distance away from a second pump diaphragm;
- and
- wherein the first distance is greater than the second distance.
10 more elements
Dependencies are inferred from the claim text.