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:
Aug. 29, 1989
Filed:
Apr. 11, 1988
Applicant:
Inventor:
Sigeo Sumi, Saitama, JP;
Assignee:
Somar Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 / ; 271258 ; 156344 ; 156584 ; 156 64 ; 156378 ;
Abstract
An end sensor for detecting the end of a thin film stuck to a base plate such as may be used in a printed circuit board manufacturing apparatus. The sensor includes an electoconductive contact member, preferably shaped as a rod or plate, having a tip oriented in a direction at an acute angle to a direction of conveyance of said base plate so as to contact a surface of said base plate and a surface of the thin film. The sensor may be either of the electrostatic capacity type or of the electrical resistance type.