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:
Sep. 24, 1991
Filed:
May. 30, 1990
Applicant:
Inventor:
Reed H Grundy, Murrysville, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ; C03B / ;
U.S. Cl.
CPC ...
65-1 ; 65-2 ; 65 12 ; 65 29 ; 65162 ; 65DI / ;
Abstract
The present invention provides a method of controlling the temperature of a multiple segment fiber glass bushing. Sensors monitor the temperature of each individual segment and the current delivered to the bushing is adjusted so as to maintain the average bushing temperature at a predetermined value. In addition, the temperature of each individual segment is compared to a set point reference value and bushing current is shunted around each segment based on this comparison.