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:
Apr. 03, 1984
Filed:
Jun. 30, 1982
Applicant:
Inventor:
Hugh E Shaw, Jr, Crystal City, MO (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 995 ; 65 996 ; 651823 ; 651824 ;
Abstract
Nip width of a glass ribbon advancing on a molten metal bath is determined by repeatedly, at selected intervals, advancing an edge detector from a first home position toward and into contact with the ribbon edge and then back to a second home position. The first and second home positions are compared at the end of each interval to determine nip width and/or change in nip width. The facilities for determining nip width include a detector responsive to fluid pressure changes. Facilities are also taught relating to measurement of substrate displacements by contacting the substrate edge with a pivotal member to activate an electrical system.