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:
Apr. 17, 2012
Filed:
Jun. 09, 2009
Toshio Yoshizawa, Gyoda, JP;
Junpei Nishimura, Gyoda, JP;
Yoshiaki Kuroda, Gyoda, JP;
Iwasaki Electric Co., Ltd., Chuo-ku, Tokyo, JP;
Abstract
Provided is an electrode for a high pressure discharge lamp, which prevents spring-back of an electrode coil, and which has high productivity and high accuracy in positioning the coil. The electrode for the high pressure discharge lamp includes: an electrode core bar (); and a coil () mounted on the electrode core bar, and is configured as follows. The electrode core bar () includes: a small-diameter section () on a power supply side; and a large-diameter section () on a leading end side. The large-diameter section () has: a large-diameter portion () on the small-diameter section side; a small-diameter portion () having a smaller outer diameter than the large-diameter portion, the small-diameter portion forming a step (s) with the large-diameter portion therebetween; and a leading end portion (). The coil () covers a portion between the step (s) and the leading end portion.