Manually charged fluid dispenser having a hydraulically biased c

Details Manually charged fluid dispenser having a hydraulically biased c Manually charged fluid dispenser having a hydraulically biased c

1979-01-10

1980-04-08

Knowles, Allen N.

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

222385, 417305, B67D 542

Patent

active

041968280

ABSTRACT:
A manually charged fluid dispenser includes a charging cylinder disposed in the mouth of a bottle and a manually reciprocable piston carried on a charging rod which extends out each end of the cylinder. The charging rod has a differential diameter for providing hydraulic return thereof by fluid pressure in the charging tube after manual charging of the tube. The charging tube is in fluid communication with a spray nozzle mounted on the bottle and tube through a ball valve which is selectively unseatable by a cam actuated by a slidable trigger, which is hydraulically biased by a piston which is in connection with pressurized fluid at the ball valve. An alternative embodiment of the charging cylinder provides a charging rod slidable in a draw tube disposed above an end of a charging cylinder and a piston slidable therein so that fluid pressure in the cylinder will return the rod to its rest position.

REFERENCES:
patent: Re29176 (1977-04-01), Loeffler
patent: 1080835 (1912-09-01), Kelley
patent: 1396494 (1921-11-01), Wright
patent: 1616077 (1925-11-01), Curtis
patent: 1730684 (1927-08-01), Phillips
patent: 1751128 (1927-10-01), Cocks
patent: 2982443 (1961-05-01), Ellis
patent: 3471065 (1969-10-01), Malone
patent: 3514017 (1970-05-01), Malone
patent: 3797748 (1974-03-01), Nozawa et al.
patent: 3799448 (1974-03-01), Nozawa et al.
patent: 3979027 (1976-09-01), Loeffler
patent: 3998361 (1976-12-01), Arena

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