Toothpaste dispenser with a flexible air compressing bag used to

Details Toothpaste dispenser with a flexible air compressing bag used to Toothpaste dispenser with a flexible air compressing bag used to

1990-06-15

1992-05-26

Huppert, Michael S.

Dispensing

Resilient wall

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

2223865, 222389, G01F 1300

Patent

active

051159481

ABSTRACT:
A toothpaste dispenser having a chamber which is operated by a flexible bag extending longitudinally alongside the chamber. A one way valve is provided at the bottom of the chamber through which air, under pressure, is introduced when the bag is compressed manually. A toothpaste pusher inside the chamber is moved vertically upwardly by the air under pressure introduced through the one-way valve. The toothpaste pusher takes the form of a bellows.

REFERENCES:
patent: 3184120 (1965-05-01), Undi
patent: 3494513 (1970-02-01), Bauer
patent: 4386717 (1983-06-01), Koob
patent: 4640442 (1987-02-01), Drobish
patent: 4877156 (1989-10-01), Clanet et al.

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