Spray etching apparatus

Details Spray etching apparatus Spray etching apparatus

1975-02-04

1976-01-20

Bleutge, Robert L.

Cleaning and liquid contact with solids

Apparatus

With plural means for supplying or applying different fluids...

134162, 134178, B08B 302

Patent

active

039331636

ABSTRACT:
An apparatus for spray-etching includes a chamber having a surface on which items to be etched can be mounted. A valve has two spray nozzles to which an etchant solution and rinse water respectively are supplied. The valve is movable between a first position in which the etchant spray nozzle is directed at the aforementioned surface and the rinse water nozzle is directed into a water drain well, and a second position in which the rinse water is directed towards the said surface and the etchant nozzle is directed to an etchant drain well. Liquid from the chamber falls into an appropriate one of the drain wells, dependent on the position of the valve. The valve prevents contamination of the etchant by the rinse water.

REFERENCES:
patent: 2575493 (1951-11-01), Hilliker
patent: 2591080 (1952-04-01), Loeb
patent: 2963029 (1960-12-01), Bock
patent: 3078861 (1963-02-01), Miller
patent: 3182671 (1965-05-01), Vorie

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