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:
Apr. 28, 1992
Filed:
May. 25, 1989
Applicant:
Inventors:
Hajime Fujita, Hachioji, JP;
Seishi Chiba, Yokohama, JP;
Tsutomu Okutomi, Yokohama, JP;
Kazuo Suzuki, Tokyo, JP;
Masami Idehara, Fuchu, JP;
Mitsutaka Honma, Tokorozawa, JP;
Seikichi Takashima, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ;
Abstract
A vacuum breaker contact produced according to the coating step of forming a metal coated layer comprising at least one metal selected from the group consisting of Cu, Ag, Ni, Sn, In, Fe and alloys thereof on at least a part of the surface of the contact substrate having a predetermined shape to a thickness of 10 .mu.m or less, and the diffusion step of having a part of the metal coated layer diffused into the contact substrate.