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US 2015/0173568 A1Published application
Pumps with vents to vent inverted containers and refill units having non-collapsing containers
AssigneeGOJO Industries, Inc.
InventorsDonald R. Harris, Aaron D. Marshall, John J. McNulty
Life of this patent
Estimating the term…
Abstract
Exemplary embodiments of refill units having foam pumps and non-collapsing containers are disclosed herein. In some exemplary embodiments, the refill unit includes a non-collapsing container and a foam pump. The foam pump includes a compressible air chamber. The foam pump includes a passage between the interior of the compressible air chamber and the interior of the container. A regulating valve regulates flow of air from the interior of the compressible air chamber to the interior of the container.
Claims20
A refill unit comprising:
- a non-collapsing container;
- a foam pump;
- the foam pump having a compressible air chamber;
- a passage between the interior of the compressible air chamber and the interior of the container;
- and
- a regulating valve regulating flow from the interior of the compressible air chamber to the interior of the container.
3 more elements
A refill unit comprising:
- a non-collapsing container;
- a foam pump;
- the foam pump having a compressible air chamber;
- a passage between the interior of the compressible air chamber and an interior of the container;
- and
- a movable valve secured to the passage, the movable valve having a first position that prevents pressurized air from flowing from the air chamber into the interior of the container and a second position that allows vacuum pressure in the interior of the container to draw air from the interior of the compressible air chamber to the interior of the container.
3 more elements
A refill unit comprising:
- a non-collapsing container;
- a foam pump;
- the foam pump having a compressible air chamber;
- a passage between the interior of the compressible air chamber and an interior of the container;
- and
- a valve secured to the passage, the valve having a wiper seal located within the interior of the container and a second seal located at least partially within the compressible air chamber.
3 more elements
Dependencies are inferred from the claim text.