Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Patent
1991-05-01
1993-03-09
Kashnikow, Andres
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
222385, 222341, B65D 8854
Patent
active
051920069
ABSTRACT:
An atomizing pump for dispensing liquids from a container which has a low profile and is non-throttling. The pump comprises a body, a spring biased piston, a lower valve openable and closable by both pressure in the pump body and by frictional interengagement with the pump piston with an extending upper end of the lower valve, and an upper valve that frictionally and sealingly fits in a lower chamber in the piston, but which can be moved against a spring force and the friction force when pressure in the pump reaches a critical limit, so that the upper valve moves into a larger upper chamber so that liquid can escape from the pump body. The upper valve preferably has an extending stem that contacts the extending upper end of the lower valve during the terminal portion of a downward stroke of the piston and an initial portion of an upward stroke of the piston so that the upper valve can be held open. The stem has two opposing tabs on its lower that are deformable to spread apart and retain the upper valve in the piston.
REFERENCES:
patent: 4071172 (1978-01-01), Balogh
patent: 4215804 (1980-08-01), Giuffredi
patent: 4234127 (1980-11-01), Tada et al.
patent: 4640443 (1987-02-01), Corsette
patent: 4776498 (1988-10-01), Maerte et al.
patent: 4986453 (1991-01-01), Lina et al.
patent: 4991747 (1991-02-01), Van Brocklin
patent: 5083682 (1992-01-01), Cater
McGarvey Glenn W.
Van Brocklin Owen F.
DeRosa Kenneth
Kashnikow Andres
Risdon Corporation
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