The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1993
Filed:
Nov. 12, 1991
Applicant:
Inventors:
Rex Breunsbach, Clackamas, OR (US);
Paul M Austen, Milwaukie, OR (US);
Assignee:
Electronic Controls Design, Inc., Portland, OR (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ;
U.S. Cl.
CPC ...
134-1 ; 134 10 ; 134 26 ; 134 36 ; 134 951 ; 134 981 ; 134 991 ; 134186 ; 134902 ;
Abstract
A cleaning apparatus and method for washing and rinsing electronic assemblies. The apparatus includes a single closable chamber for containing a single tank with attached ultrasonic transducers. Separate wash and rinse fluid circuits each are arranged to fill the tank, to drain fluid from the tank, and to recondition the fluid for reuse. To permit the safe use of combustible solvents, an inert gas purge system evacuates oxygen and combustible vapors from areas with potential electrical ignition sources.