Single valve aspiration type sprayer

Details Single valve aspiration type sprayer Single valve aspiration type sprayer

1992-03-09

1993-05-25

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

To be mixed, dissolved or entrained in a flowing liquid...

239318, 222484, B05B 726, B05B 730

Patent

active

052132650

ABSTRACT:
An aspiration type chemical sprayer for dispensing small quantities of a liquid based chemical into a stream of carrier fluid is disclosed. The sprayer includes a sprayer head assembly sealingly mounted onto a container holding chemicals such as pesticides or fertilizers. A unitary valve in the sprayer head assembly controls carrier fluid flow from a pressurized source of water while simultaneously providing a controlled aspiration rate and full communication of the container interior to atmospheric pressure. The valve additionally includes simultaneously closure of the carrier fluid, aspiration and vent passageways so as to seal the chemical in the container when the sprayer is not being used.

REFERENCES:
patent: 3186643 (1965-01-01), George et al.
patent: 3770205 (1973-11-01), Proctor et al.
patent: 4583688 (1986-04-01), Crasper
patent: 4653691 (1987-03-01), Grime
patent: 4750674 (1988-06-01), Chow et al.
patent: 4767058 (1988-08-01), La Rosa et al.
patent: 5007588 (1991-04-01), Chow et al.

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