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. 28, 1982
Filed:
Mar. 24, 1981
Applicant:
Inventor:
Robert J Ramspacher, Jr, Indianapolis, IN (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 43 ; 428134 ; 428135 ; 428136 ; 428901 ; 428251 ; 428415 ; 174 685 ; 339 / ;
Abstract
A relatively brittle sheet material, for example, a printed circuit board substrate, is subdivided into sections the boundaries of which are defined by apertures which permit the substrate to be fractured at the boundaries. Each aperture has side walls which intersect at points aligned along a separation line. Bending stresses are concentrated at the intersecting side walls to provide a clean straight fracture along the boundary.