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:
May. 25, 2004
Filed:
Feb. 12, 2003
Applicant:
Inventors:
Takeo Matsushima, Himeji, JP;
Yoichiro Higashimoto, Himeji, JP;
Assignee:
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/718 ;
U.S. Cl.
CPC ...
H01J 1/718 ;
Abstract
A short arc discharge lamp in which the arc tube contains opposed cathode and anode electrodes with upholding parts that are inserted into a respective glass tube holding cylinder, and in which the glass tubes of the holding cylinders are secured in the side tubes at opposite sides of the arc tube by contracted areas, provides the peripheral surface of the holding cylinders with at least one section of reduced diameter to prevent the holding cylinders from moving, to prevent force from acting in a concentrated manner on the sealed areas and to prevent the lamp from being damaged when the lamp is shaken during transport or the like.