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:
Jul. 02, 1991
Filed:
Apr. 24, 1990
Rex Breunsbach, Clackamas, OR (US);
Paul M Austen, Milwaukie, OR (US);
Electronic Controls Design, Inc., Milwaukie, OR (US);
Abstract
A batch cleaning system which can use a combustible solvent to clean printed circuit boards or other electronic assemblies is disclosed. An inner enclosure is sealed by a door. A rack for supporting printed circuit boards or other electronic assemblies or the like is mounted inside the inner enclosure. A plurality of spray nozzles are mounted within the inner enclosure. The inner enclosure is purged of air by introducing an inert gas. Combustible solvent is introduced into the bottom of the inner enclosure where it is pumped through the spray nozzles to clean the printed circuit boards. The contamination level of the solvent is measured and recorded. The solvent is drained back into a solvent holding tank upon completion of the cleaning cycle for subsequent reuse during the next cleaning cycle.