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:
May. 22, 2012
Filed:
Aug. 30, 2007
Junji Yamane, Yamaguchi, JP;
Hiroshi Kurimoto, Yamaguchi, JP;
Kohei Harazono, Yamguchi, JP;
Doyuu Hachisu, Yamaguchi, JP;
Takanao Saito, Yamaguchi, JP;
Hiroyuki Saikawa, Fukui, JP;
Junji Yamane, Yamaguchi, JP;
Hiroshi Kurimoto, Yamaguchi, JP;
Kohei Harazono, Yamguchi, JP;
Doyuu Hachisu, Yamaguchi, JP;
Takanao Saito, Yamaguchi, JP;
Hiroyuki Saikawa, Fukui, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A capacitor is improved in reliability by suppressing the formation of burrs or protrusions at a joint portion between an aluminum wire round rod and an external terminal in a lead wire used for a capacitor. A metal cap having a higher melting point than aluminum is fitted to an end portion of the aluminum wire round rod and the metal cap is heated, thereby joining the aluminum wire round rod to the metal cap. Thereafter, the external terminal and the metal cap are welded to each other. The metal cap has a curved surface in which an outer periphery is decreased from an opening toward an end portion opposite to the opining. The opening is provided with a stepped portion, so that the sealing degree is increased when the lead wire is inserted into a hole of the sealing member.