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. 09, 1986
Filed:
Feb. 06, 1984
Applicant:
Inventors:
Yasuo Kato, Zama, JP;
Tetsuo Ono, Kokubunji, JP;
Yoshio Watanabe, Tokyo, JP;
Seiichi Murayama, Kokubunji, JP;
Shigeo Mikoshiba, Tokyo, JP;
Hiromitsu Matsuno, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313595 ; 313600 ; 313493 ; 313 25 ; 315 58 ; 315 60 ; 315 61 ; 315240 ;
Abstract
A low-pressure mercury vapor discharge lamp in which a rare gas and mercury are provided in an outer bulb, which in turn contains therein a plurality of bent inner tubes, each having an opening at an end and an electrode at the other end thereof. A starting probe is provided between the openings in the outer bulb. An operating circuit or starter is connected to the electrodes. Further, a starting probe circuit is connected to the starting probe to apply a high voltage to the starting probe at the time of ignition.