Piston operated fluid dispensing device

Details Piston operated fluid dispensing device Piston operated fluid dispensing device

1991-06-10

1993-02-02

Shaver, Kevin P.

Dispensing

With discharge assistant

With discharge volume varying means

222309, 222335, 222341, 2224022, B65D 3700, B65D 8314

Patent

active

051831872

ABSTRACT:
In a fluid dispenser a spring biased piston is mounted for reciprocable movement along a stem member which is moved longitudinally to actuate the dispenser. A metering chamber is located between the end of the piston and the end wall of a cylindrical chamber in which the piston is mounted, and axial passageways extending from opposite ends of the stem connect the metering chamber to a discharge location when the stem is in a discharge positon and connect the metering chamber to a fluid reservoir when the stem is in a fill position.

REFERENCES:
patent: 3018928 (1962-01-01), Meshberg
patent: 3033425 (1962-05-01), Gawthrop
patent: 3055560 (1962-09-01), Meshberg
patent: 3104785 (1963-09-01), Beard, Jr.
patent: 3180535 (1965-04-01), Ward
patent: 3221946 (1965-12-01), Riley
patent: 3511418 (1970-05-01), Venus, Jr.
patent: 4427137 (1984-01-01), Dubini
patent: 4577784 (1986-03-01), Brunet
patent: 4892232 (1990-01-01), Martin

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