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. 10, 2006
Filed:
Aug. 14, 2003
Shunsuke Kakisaka, Ibaraki, JP;
Tatsuo Nishimoto, Mino, JP;
Masanori Higashi, Takatsuki, JP;
Mikio Miura, Takatsuki, JP;
Hiroshi Enami, Nishinomiya, JP;
Yoshiharu Nishiura, Outsu, JP;
Shunsuke Kakisaka, Ibaraki, JP;
Tatsuo Nishimoto, Mino, JP;
Masanori Higashi, Takatsuki, JP;
Mikio Miura, Takatsuki, JP;
Hiroshi Enami, Nishinomiya, JP;
Yoshiharu Nishiura, Outsu, JP;
Matsushita Electric Industrial Co., LTD, Osaka-fu, JP;
Abstract
A metal vapor discharge lamp including an arc tubethat includes a containerand power transmission membersand. The container, made of translucent ceramic, is divided into a main tube portionand narrow tube portionsandextending out from both ends of the main tube portion. The power transmission membersandrespectively include electrode pinsandmade of tungsten. Coilsandmade of tungsten are respectively wound around ends of electrode pinsand, which are respectively joined with electrode supporting membersandmade of conductive cermet. Electrode length Lis set to (0.041P+0.5) mm to (0.041P+8.0) mm, 'P' representing a lamp power in watts. Alternatively, a narrow tube portion length Lis set to (0.032P+3.5) mm to (0.032P+8.0) mm inclusive.