Squeeze dispenser having refill cartridge

Details Squeeze dispenser having refill cartridge Squeeze dispenser having refill cartridge

1995-04-14

1997-10-28

Kashnikow, Andres

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

2223865, 222389, G01F 1300

Patent

active

056809662

ABSTRACT:
A squeeze dispenser for dispensing viscous liquid products such as pastes, jells and lotions. The dispenser includes a hollow housing, a pump mechanism in the form of a flexible hollow squeeze member attached along one side of the housing, and a product cartridge which is insertable into and removable from the housing. A substantially air tight seal is created between the product cartridge and the housing such that the interior of the housing forms a pressure chamber. A lower end of the product cartridge takes the form of a flexible plastic bag which holds the product. Two one-way valves are incorporated into the dispenser. One of these valves allows one-way flow of air from atmosphere into the flexible hollow squeeze member while the other of these check valves allows one way flow of air from the flexible hollow squeeze member into the pressure chamber of the housing.

REFERENCES:
patent: 2608320 (1952-08-01), Harrison, Jr.
patent: 3223289 (1965-12-01), Bouet
patent: 3341083 (1967-09-01), Stewart
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patent: 4147278 (1979-04-01), Uhlig
patent: 4763818 (1988-08-01), Stefano et al.
patent: 4842165 (1989-06-01), Van Coney
patent: 5012956 (1991-05-01), Stoody
patent: 5115948 (1992-05-01), Johnson
patent: 5215229 (1993-06-01), Johnson
patent: 5417847 (1995-05-01), de La Forcode

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