Patent ID: 11918156
Assignee: SIMPLEHUMAN, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A

Claim 25:
26. A manually operated liquid dispenser, comprising:
a housing with a liquid reservoir configured to contain liquid, the liquid reservoir comprising a top and a bottom, and an upper half and a lower half;
a pump sleeve extending into the liquid reservoir of the housing such that a distance between a distal end of the pump sleeve and the bottom of the reservoir is less than or equal to about an average diameter or cross-sectional width of a majority of a length of the pump sleeve, the pump sleeve having an inner diameter or cross-sectional width;
a pump head;
a push rod coupled with the pump head and configured to be axially movable within an axial opening extending through the pump sleeve, the push rod comprising a distal end with an outer diameter or cross-sectional width that is about a same size as the inner diameter or cross-sectional width of the pump sleeve;
a passageway extending through at least the pump head and the push rod, the passageway being in fluid communication with the axial opening extending through the pump sleeve and with a volume of space within the housing;
a first valve configured to control a passage of a liquid substance within the volume of space in the housing through a passageway, the first valve comprising a first plug configured to be axially movable within a space within the first valve; and
an inner support member having one or more inwardly and downwardly sloping walls configured to facilitate filling the volume of space with the liquid substance;
wherein the dispenser is configured to dispense a viscous substance;
wherein the dispenser is configured to fully depress and dispense the viscous substance with about 1 kg or less of force applied to the pump head;
wherein in a fully actuated position, the distal end of the push rod extends into the lower half of the liquid reservoir.