Manually operated pump device for dispensing fluids

Details Manually operated pump device for dispensing fluids Manually operated pump device for dispensing fluids

1991-04-19

1993-06-29

Shaver, Kevin P.

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

222379, 222380, 222381, 222383, 239333, B67D 540

Patent

active

052226379

ABSTRACT:
A manually operated pump device for dispensing fluids from containers is disclosed. The pump device is provided with a mobile cylinder, a trigger lever for operating the cylinder, and a fixed piston located inside the cylinder. In the pump device, there is also a gasket and a stem-like member located inside a delivery and suction valve. The gasket and stem-like member act together to permit fluid to flow from the cylinder and to a delivery head during a delivery stage. During a sealing stage, the gasket and stem-like member operate in conjunction to seal the cylinder. A spring acts between the cylinder and the piston to allow fluid to flow again through the delivery valve.

REFERENCES:
patent: 4061247 (1977-12-01), Meshberg
patent: 4071172 (1978-01-01), Balogh
patent: 4161288 (1979-07-01), McKinney
patent: 4169546 (1979-10-01), Yuhas et al.
patent: 4247048 (1981-01-01), Hayes
patent: 4591077 (1986-05-01), Corsette
patent: 4606480 (1986-08-01), Gazulla
patent: 4691849 (1987-09-01), Tada
patent: 4898306 (1990-02-01), Tiramani
patent: 4953791 (1990-09-01), Tada
patent: 4971227 (1990-11-01), Knickerbocker
patent: 4982900 (1991-01-01), Blake
patent: 5050779 (1991-09-01), Knickerbocker

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