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:
Jan. 30, 2001
Filed:
Sep. 10, 1999
Applicant:
Inventors:
Izrail Levin, Silver Spring, MD (US);
Bruce Shanks, Gaithersburg, MD (US);
Thomas L. Sumner, Wheaton, MD (US);
Assignee:
Fusion Lighting, Inc., Rockville, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/02 ; F21V 7/00 ;
U.S. Cl.
CPC ...
H01J 1/02 ; F21V 7/00 ;
Abstract
An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one embodiment, the cast quartz ceramic segment includes heat sink fins or stubs providing an increased outside surface area to dissipate internal heat. In another embodiment, the quartz ceramic segment includes an outside surface fused to eliminate gas permeation by polishing.