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. 06, 1990
Filed:
Feb. 19, 1988
Applicant:
Inventors:
Mitsutoshi Kimura, Yokohama, JP;
Yasuhiro Nieda, Yokosuka, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01K / ; H01J / ;
U.S. Cl.
CPC ...
315116 ; 315115 ; 315117 ; 315 82 ; 307 / ;
Abstract
In an operating apparatus of a high-pressure discharge lamp of the invention, power is supplied to a heater provided in a high-pressure discharge lamp from a battery. The battery is charged by a charger which is driven by a power section. The power section is started by an ON operation of a switch which is turned on/off synchronously with the operation of a control switch. The control switch allows power supply from the battery to the heater when it is turned on. Therefore, always while power is supplied to the heater, the battery is being charged by the charger so that the voltage of the battery will not be lowered.