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:
Aug. 18, 2009
Filed:
Mar. 15, 2005
Kazuhiro Yamazaki, Shizuoka, JP;
Fujihiko Sugiyama, Shizuoka, JP;
Masahiro Enoki, Shizuoka, JP;
Chiharu Matsunaga, Shizuoka, JP;
Kazuhiro Yamazaki, Shizuoka, JP;
Fujihiko Sugiyama, Shizuoka, JP;
Masahiro Enoki, Shizuoka, JP;
Chiharu Matsunaga, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
In a lamp including a lamp housing and a lamp cover, the lamp cover is laser-beam welded to an opening edge portion of the lamp housing. There exists no trace of fusion on the opening edge portion of the lamp housing in any other areas than a surfaces abutment portion where the lamp cover is brought into abutment. A method for fabricating a lamp includes bringing a lamp cover into abutment with an opening edge portion of a lamp housing; and emitting a laser beam to a surfaces abutment portion of the lamp housing with the lamp cover so as to laser-beam weld the lamp housing and the lamp cover together. The emission of the laser beam is implemented while blocking the laser beam so that the laser beam is not emitted to at least any other areas of the opening edge portion than the surfaces abutment portion. An apparatus for fabricating a lamp includes support means for rotatably supporting a lamp housing and a lamp cover that is brought into abutment with an opening edge portion of the lamp housing in an abutment state; laser beam emitting means for emitting a laser beam to a surfaces abutment portion of the opening edge portion where the lamp housing is in abutment with the lamp cover; and laser beam blocking means for blocking the emission of a laser beam to at least any other areas of the opening edge portion than the surfaces abutment portion.