Coating apparatus – Program – cyclic – or time control – Having timer
Patent
1979-05-09
1982-03-09
Silverberg, Sam
Coating apparatus
Program, cyclic, or time control
Having timer
427 4, 118326, 118DIG7, 118320, 422100, 239350, B05B 1004
Patent
active
043183638
ABSTRACT:
An enclosed spray chamber for the application of toxic compounds in micro liquid volumes as a function of time using air as a carrier. The spray chamber is cylindrical and vertically mounted about its longitudinal axis. A spray nozzle is mounted in the top of the spray chamber which uses a syringe and needle reservoir system as an accurate means of controlling the amount of solute dissipated. An air pump provides a stream of air that passes in front of the spray nozzle which pulls the spray solute and solvent out of the syringe by vacuum. An exhaust fan and exhaust outlet are provided to safely dispose of the spray solute and solvent outside of the working area of the chamber. A timer system operates the exhaust fan and air pump so that spray droplet fallout and impingement time can be varied and calibrated. The chamber further has a side door, a rotating specimen table that can be adjusted in height with respect to the spray nozzle, and a funnel shaped bottom with a drain outlet to facilitate cleaning the chamber. A preferred method of operation of the chamber is also described.
REFERENCES:
patent: 1611756 (1926-12-01), Leigh
patent: 2064726 (1936-12-01), Brown
patent: 2557243 (1951-06-01), Woosley
patent: 3811409 (1974-05-01), Porter
Potter, Am. Appl. Biol. 39:1 (1952).
Robertson et al., USDA Forest Service Research Note PSW-335, 1/79.
Moellman Emanuel E.
Robertson Jacqueline L.
McConnell David G.
Silverberg Sam
Silverstein M. Howard
The United States of America as represented by the Secretary of
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