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, 1992
Filed:
Apr. 02, 1991
Mitsuo Sunaga, Kanagawa, JP;
Kiyoshi Sekiguchi, Kanagawa, JP;
Hisaji Shinohara, Kanagawa, JP;
Akihiro Takahashi, Kanagawa, JP;
Hiroshi Hikita, Kanagawa, JP;
Takashi Nara, Tokyo, JP;
Sadao Sato, Tokyo, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Tokuriki Honten Co., Ltd., Tokyo, JP;
Abstract
An electric contact with a base metal used as a switch wherein the non-welded peripheral portion of the contact is prevented from bow-like bending and from peeling off. The electric contact with a base metal having a contact promoting shape is formed by die forging of a contact material joined to the base metal by resistance welding. The composite contact material is prepared by coating the core material of Ag-oxide contact material with non-oxide contact material. The side of the material in contact with the base metal is of non-oxide contact material. The contact material may be pressed to fill a groove preformed in the base metal, welded to protrusions preformed in the base metal, welded to the bottom of a cut preformed in the base metal, or welded to bottoms of recesses preformed in the base metal.