Hand sprayer

Details Hand sprayer Hand sprayer

1995-10-12

1996-10-08

Kashnikow, Andres

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

2223219, 239590, B67D 542

Patent

active

055622348

ABSTRACT:
A hand sprayer including a piston and a piston valve suspended in an accumulator and moved downwards in the accumulator by the press head of the hand sprayer for permitting liquid to be forced out of the accumulator and then ejected out of the nozzle on the press head, wherein the piston has a plurality of longitudinal grooves on the inside wall around the longitudinal center through hole thereof for guiding liquid into small streams for permitting it to be further forced out of the nozzle into a mist of very fine drops of liquid; the piston valve has a horn-like bottom mouth, which air-tightly engages the peripheral wall of the bottom inductor chamber of the accumulator upon each down stroke of the piston.

REFERENCES:
patent: 3288378 (1966-11-01), Dobson
patent: 3702175 (1972-11-01), Watkins
patent: 4025046 (1977-05-01), Boris
patent: 4277001 (1981-07-01), Nozawa
patent: 4305530 (1981-12-01), Nozawa
patent: 4369900 (1983-01-01), Saito et al.
patent: 4378088 (1983-03-01), Ewing
patent: 4462549 (1984-07-01), Saito et al.
patent: 4606479 (1986-08-01), Van Brocklin
patent: 4821928 (1989-04-01), Su
patent: 4930999 (1990-06-01), Brunet et al.
patent: 5370280 (1994-12-01), Su

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