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:
Mar. 04, 2003
Filed:
Mar. 31, 1998
Applicant:
Inventors:
Assignee:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 5/48 ;
U.S. Cl.
CPC ...
H01J 5/48 ;
Abstract
An electric light bulb with a base , including a positioning ring adapted to be fitted onto and mounted to a cylindrical-shaped base which holds a glass bulb enclosing therein filaments . The positioning ring includes elastic pieces and weld pieces formed on a fitting hole , through which the base is inserted, the elastic pieces being adapted to resiliently abut against an outer peripheral surface of the base, the weld pieces being adapted to be welded to the outer peripheral surface of the base. The weld pieces are securely welded to the outer peripheral surface of the base after the elastic pieces are made to abut against the outer peripheral surface of the base.