Spraying apparatus having internal chamber selectively pressuriz

Details Spraying apparatus having internal chamber selectively pressuriz Spraying apparatus having internal chamber selectively pressuriz

1992-09-30

1994-02-15

Merritt, Karen B.

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

Follower in holder

239373, 222214, 222340, 222392, B05B 904

Patent

active

052859665

ABSTRACT:
To avoid the use of propellants which are harmful to the environment, a spraying apparatus employs a supply chamber which contains a material to be sprayed and includes a pressure chamber of variable volume. This pressure chamber of variable volume is connected to actuating structure which is provided for increasing the volume of the pressure chamber and thus for sucking material from the supply chamber into the pressure chamber. Since the material within the pressure chamber is kept under pressure by pressurizing structure, a nonreturn valve is disposed in the suction conduit leading to the supply chamber. Material can be sprayed with the aid of the spraying apparatus without any harmful effects on the environment, the use of conventional spraying heads being here possible.

REFERENCES:
patent: 3042981 (1962-07-01), Dilione
patent: 3114483 (1963-12-01), Kappel
patent: 3235135 (1966-02-01), Robert et al.
patent: 3471065 (1969-10-01), Malone
patent: 3792800 (1974-02-01), Capra et al.
patent: 3799448 (1974-03-01), Nozawa et al.
patent: 3848808 (1974-11-01), Fetty et al.
patent: 4182496 (1980-01-01), Burke
patent: 4527437 (1985-07-01), Wells
patent: 4723725 (1988-02-01), Comment
patent: 5199614 (1993-04-01), Husman

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