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. 14, 1992
Filed:
Oct. 06, 1989
Raymond E Pickering, Vassalboro, ME (US);
Patricia E Waitkus, Rockport, MA (US);
Delmar R Parsons, Greenfield, MA (US);
Lincoln Soule, Wendell, MA (US);
William T Walker, South Deerfield, MA (US);
Robert E Bedaw, Turner Falls, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A method and apparatus for the aqueous cleaning of a printed circuit board having surface mounted components assembled thereon. The invention involves a heated aqueous solution sprayed under high pressure through a helically-vaned nozzle that is moving rotationally about the plane of a moving printed circuit board. The apparatus accomplishes a thorough cleaning of all components and areas of the printed circuit board with the use of a water based cleaning solution.