Spray pump

Details Spray pump Spray pump

1980-01-16

1982-08-17

Freeh, William L.

Pumps

Expansible chamber type

Valved piston

417554, 222321, F04B 2104, G01F 1102

Patent

active

043447449

ABSTRACT:
A spray pump comprises a pump cylinder defining a pump chamber, a piston which is movable in the chamber, an actuating push button arranged to move the piston in the chamber, and an atomization nozzle arranged to receive liquid from the said chamber. A liquid outlet valve is located between the pump chamber and the atomization nozzle. The outlet valve comprises a valve body received in and surrounded by a tubular portion, the valve having a closed position in which tubular portion lies against the valve body and an open position in which the tubular portion is elastically widened to allow liquid to pass between the valve body and the tubular portion. The valve further comprising a stop for holding the valve body in the tubular portion.

REFERENCES:
patent: 2598122 (1952-05-01), Hansen
patent: 3062416 (1962-11-01), Cooprider
patent: 3228570 (1966-01-01), Steiman
patent: 3954354 (1976-05-01), Bori
patent: 4065038 (1977-12-01), Magers et al.

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