Pump activated fluid dispenser

Details Pump activated fluid dispenser Pump activated fluid dispenser

1999-03-12

2000-04-25

Kaufman, Joseph A.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

222402, B67D 540

Patent

active

060533722

ABSTRACT:
A pump actuated fluid dispenser for selectively dispensing a sporadic or continuous supply of fluid from within a container interior. The fluid dispenser comprises a main body mounted on a cap, a plunger shaft within the main body, and a trigger mounted to the main body and the plunger. A pumping cylinder extends downward from the cap, and houses a hollow tube that extends downward from the main body, such that the bottom of the tube allows fluids to pass therethrough from within the container interior and into the interior of the plunger shaft. A washer is mounted on the hollow tube that moves upward and downward within the interior of the cylinder. The cylinder has a one-way valve, which allows passage of air from within the cylinder to the container when the washer moves upward.

REFERENCES:
patent: 4216882 (1980-08-01), Basile et al.
patent: 4220285 (1980-09-01), Gualdi
patent: 4260079 (1981-04-01), Cary et al.
patent: 4537334 (1985-08-01), Spengler et al.
patent: 5197638 (1993-03-01), Wood
patent: 5273191 (1993-12-01), Meshberg
patent: 5460300 (1995-10-01), Tristch
patent: 5816503 (1998-10-01), Nelson
patent: 5839621 (1980-09-01), Tada

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