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:
Aug. 09, 1983
Filed:
Dec. 15, 1982
Applicant:
Inventors:
Michihiro Tsuchihashi, Kanagawa, JP;
Ryo Suzuki, Kanagawa, JP;
Masato Saito, Kanagawa, JP;
Heiji Watanabe, Kanagawa, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 46 ; 315104 ; 3152 / ;
Abstract
A high pressure discharge lamp in which the restriking voltage and time are significantly decreased. A pair of electrodes are sealably disposed in a tube containing an appropriate amount of mercury. Means is provided for heating at least one of the electrodes for starting the lamp if it has been recently turned off and the mercury vapor pressure inside the tube is high. The heating means is preferably a filament made of a thermally stable material. One terminal of the filament may be connected to one of the electrodes.