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. 01, 2011
Filed:
Sep. 29, 2009
Gary Robert Allen, Chesterland, OH (US);
David C. Dudik, South Euclid, OH (US);
Viktor K. Varga, Solon, OH (US);
Robert Baranyi, Budaors, HU;
Agoston Boroczki, Budapest, HU;
Elizabeth A. Guzowski, Cleveland Heights, OH (US);
Jianwu LI, Solon, OH (US);
Rocco T. Giordano, Garfield Heights, OH (US);
Svetlana Selezneva, Schenectady, NY (US);
Amol S. Mulay, Karnataka, IN (US);
Gary Robert Allen, Chesterland, OH (US);
David C. Dudik, South Euclid, OH (US);
Viktor K. Varga, Solon, OH (US);
Robert Baranyi, Budaors, HU;
Agoston Boroczki, Budapest, HU;
Elizabeth A. Guzowski, Cleveland Heights, OH (US);
Jianwu Li, Solon, OH (US);
Rocco T. Giordano, Garfield Heights, OH (US);
Svetlana Selezneva, Schenectady, NY (US);
Amol S. Mulay, Karnataka, IN (US);
General Electric Company, Schenectady, NY (US);
Abstract
A lamp is provided having an arctube having a light-transmitting envelope. The arctube is surrounded by a gaseous medium confined by a containment envelope such as a hermetic shroud. The gaseous medium is preferably He or Hor Ne or another gas whose thermal conductivity is greater than that of Nat 800° C., or a mixture thereof, to help cool the arctube. The inside and/or outside of the shroud may be coated with a diffusion barrier. To help cool the hot spot of the arctube the gap between the shroud and the envelope can be made small, the portion of the shroud wall near the arc can be thickened, the arctube can be offset above the longitudinal axis of the shroud, and the return lead of the arctube can be located between the shroud and the arctube.