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:
Dec. 29, 1981
Filed:
Apr. 02, 1979
Frank H Blitchington, Richmond, VA (US);
Jack C Hetherington, Richmond, VA (US);
Western Electric Company, Inc., New York, NY (US);
Abstract
A continuous flexible web includes a flat, flexible, non-conductive substrate with copper cladding on at least one major surface of the substrate. Prepunched holes may be formed in and through the web and may provide through-hole connections between printed circuits ultimately formed on opposite sides of the substrate. Successive sections of the web are indexed through a screen printing apparatus. A photocell system cooperates with preformed through-slots formed selectively in the web and windows formed in a platen beneath the section to precisely locate the platen with the section and relative to a circuit pattern formed in a screen above the section. The underside of the section is then held with the platen and the screen is positioned over the top side of the section. Ink is then flooded onto the screen and ultimately wiped through circuit-pattern openings in the screen and onto the section to form an inked impression of the circuit pattern on the section.