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:
Jul. 08, 2003
Filed:
Jul. 30, 1999
Meryle D. M. Adler, Corning, NY (US);
John T. Brown, Corning, NY (US);
Mahendra K. Misra, Horseheads, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
Burners ( ) for producing fused silica boules are provided. The burners employ a tube-in-tube ( ) design with flats ( ) on some of the tubes ( ) being used to limit the cross-sectional area of certain passages ( ) within the burner and/or to atomize a silicon-containing, liquid source material, such as OMCTS. To avoid the possibility of flashback, the burner has separate passages for fuel ( ) and oxygen ( ), i.e., the burner employs nozzle mixing, rather than premixing, of the fuel and oxygen. The burners are installed in burner holes ( ) formed in the crown ( ) of a furnace and form a seal with those holes so that ambient air cannot be entrained into the furnace through the holes. An external air cooled jacket ( ) can be used to hold the temperature of the burner below a prescribed upper limit, e.g., 400° C.