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:
Dec. 21, 2004
Filed:
Nov. 14, 2002
Applicant:
Inventor:
Farzin Homayoun Azad, Clifton Park, NY (US);
Assignee:
General Electric Company, Niskayuna, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 9/00 ; H01J 9/24 ; H01J 9/40 ;
U.S. Cl.
CPC ...
H01J 9/00 ; H01J 9/24 ; H01J 9/40 ;
Abstract
The invention provides a method for sealing arc tubes while preventing cracking of the tube. The method comprises sealing a pair of electrodes on the arc tube in a furnace. A heat shield structure is used to reduce the thermal gradient generated by the sealing process. The heat shield comprises alternating layers of thermally conducting materials and thermally non-conducting materials.