Herbert L Harris

US Patent:

43593607, Nov 16, 1982

Filed:

Dec 10, 1981

Appl. No.:

6/329459

Inventors:

Herbert M. Harris - Duluth GA
Gerald N. Hill - Marietta GA

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

B41C 100
B44F 122
C03C 1500
C03C 2506

US Classification:

156345

Abstract:

An apparatus for selectively jet etching a plastic which is encapsulating an article (i. e. , a device, assembly, and the like). This apparatus accomplishes the elimination of the prior art problems and disadvantages by confining the etching to a preselected portion (i. e. , the desired region) of the plastic encapsulation, by causing a turbulent flow of the etchant which in turn causes great mechanical agitation of the etchant and thereby results in complete etching of the plastic encapsulant, and by providing a completely closed systemic apparatus which thereby inherently precludes any danger to the personnel using the inventive apparatus.