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:
Nov. 24, 1981
Filed:
Nov. 19, 1979
Applicant:
Inventor:
Sheldon A Canfield, Newark, OH (US);
Assignee:
Owens-Corning Fiberglass Corporation, Toledo, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
13-6 ; 7329 / ;
Abstract
An apparatus for sensing the level of the glass batch in a glass-melting furnace. The apparatus comprises means for transmitting an ultrasonic signal toward the surface of the batch in the furnace, means for receiving the ultrasonic signal after it has been reflected by the surface of the batch, and means for distrubing a thermal inversion layer in the path of the ultrasonic signal in the gaseous medium between the means for transmitting and the surface of the batch. The means for transmitting, means for receiving and means for disturbing are positioned above the glass batch.