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:
Feb. 14, 1978
Filed:
Jan. 29, 1976
Applicant:
Inventor:
Bart van der Leeuw, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
313 13 ; 313 27 ; 313 44 ; 313 47 ;
Abstract
The invention relates to a gas-and/or vapor discharge lamp which is provided with a discharge tube and with a heat shield. The heat shield is connected to a bimetal element of the lamp such that, when the temperature of the discharge tube is raised (or lowered) the heat shield is further removed from (or moved towards) the discharge tube. Accordingly the lamp reaches its operating condition rapidly after starting and in the operating condition fluctuations in the temperature are very small.