Dispenser for paste-like products with a manually actuatable pis

Details Dispenser for paste-like products with a manually actuatable pis Dispenser for paste-like products with a manually actuatable pis

1982-02-01

1983-10-11

Tollberg, Stanley H.

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

222384, B67D 542

Patent

active

RE0314080

ABSTRACT:
This invention relates to a dispenser for paste-like products of the type having a container containing a product and closed at one end by a slidable piston in sealing engagement with the inner wall surface thereof, the other end being provided with a head member carrying on applicator and forming a pump chamber the volume of which is variable by the exertion of exterior pressure, the pump chamber being closed towards said container by a first check valve adapted to open only towards the pump chamber, and towards the outlet of the applicator by a second check valve adapted to open only towards said outlet.

REFERENCES:
patent: 2690278 (1954-09-01), Bacheller
patent: 3162333 (1964-12-01), Davidson
patent: 3162334 (1964-12-01), Miller
patent: 3361305 (1968-01-01), Spatz
patent: 3486503 (1969-12-01), Porter et al.
patent: 3768705 (1973-10-01), Spatz
patent: 3987938 (1976-10-01), Cooprider
patent: 4155487 (1979-05-01), Blake

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