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:
Oct. 03, 1989
Filed:
Mar. 14, 1988
Applicant:
Inventor:
Harald L Witting, Burnt Hills, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315248 ; 315256 ; 315 39 ; 315229 ;
Abstract
An electrodeless high intensity arc discharge lamp employs an excitation coil comprised of a high-temperature metal, such as tungsten or molybdenum, wound directly on the hot quartz envelope of the arc tube within the interior of the outer glass envelope of the lamp, thereby requiring substantially lower current and voltage from the power supply than such lamps having external excitation coils, while emitting less electromagnetic noise. The excitation coil losses are comparable to those of the external excitation coils or prior electrodeless high intensity arc discharge lamps.