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:
Feb. 23, 1993
Filed:
Oct. 11, 1991
Hiroyuki Makita, Shizuoka, JP;
Shuichi Kochi, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A vehicular headlamp employing a discharge bulb as a light source in which a lighting circuit for the bulb, including an ignitor, is secured to a lamp housing in such a manner as to cover a rear opening in the housing. This arrangement results in significantly reduced danger of shock and reduced radiation of electromagnetic noise. In another embodiment of the invention, a lighting-circuit-accommodating unit containing a lighting circuit is bayonet-engaged with a circular opening in the rear wall of a lamp body, and also is fixed to the lamp body by a second fixing device in such a manner as to prevent rotation of the lighting-circuit-accommodating unit relative to the lamp body.