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:
Jun. 27, 1978
Filed:
Mar. 16, 1976
Applicant:
Inventor:
Hugh E Shaw, Jr, New Kensington, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 73 ; 250572 ; 356200 ;
Abstract
A beam of light is transmitted through a glass ribbon along a scan path onto a beam splitter. The beam splitter directs a first scanning beam onto a first detector responsive to B type defects and a second scanning beam onto a second detector responsive to point type defects. Monitoring the movement of the scanning beam and the signals from the detectors, the location of B type and point type defects in a glass ribbon are obtained.