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:
Jan. 11, 1994
Filed:
Dec. 04, 1992
Applicant:
Inventors:
Akihiro Nagata, Shizuoka, JP;
Kunio Fukai, Shizuoka, JP;
Assignee:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 26 ; 174 5064 ;
Abstract
An electrode assembly for an arc tube which is free from the difficulty that tearing of a foil occurs in pinch-sealing the arc tube. One end portion of an electrode bar is overlapped with a molybdenum foil, and the electrode bar is connected to the molybdenum foil by spot-welding the overlapped portions of the two members, except for the tip end part of the end portion of the electrode bar, whereby the molybdenum foil is prevented from being damaged by the rectangular corner of the end portion of the electrode bar.