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:
Sep. 18, 1990
Filed:
Dec. 21, 1988
Applicant:
Inventors:
Assignee:
North American Philips Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313 25 ; 313-1 ; 313 44 ; 313634 ; 313317 ;
Abstract
A high intensity discharge lamp having a pair of discharge devices with one of them initially operative. The discharge devices are laterally adjacent with the higher temperature end of the operative discharge device proximate the lower temperature end of the inoperative discharge device for heating it during lamp operation. This facilitates starting of the inoperative discharge device after a momentary power interruption.