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. 20, 2004
Filed:
Feb. 02, 2001
Applicant:
Inventors:
Ian George Sayce, Stocksfield, GB;
Peter John Wells, Gateshead, GB;
Assignee:
Saint-Gobain Quartz PLC, Walisend, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 2/000 ; C03B 1/914 ;
U.S. Cl.
CPC ...
C03B 2/000 ; C03B 1/914 ;
Abstract
A method and apparatus for the manufacture of synthetic vitreous silica ingots involves the production of a melt of synthetic vitreous silica in a crucible ( ) within a refractory furnace ( ), and the continuous withdrawal of an ingot ( ) through an orifice ( ) in the wall of the crucible. The silica may be deposited in the crucible by a synthesis burner ( ), which may also serve to maintain the silica above its sintering temperature. The emerging ingot is supported by an arrangement of moveable clamps ( ).