Electricity: circuit makers and breakers – Electric switch details – Contact
Reexamination Certificate
2011-04-12
2011-04-12
Zimmerman, John J (Department: 1784)
Electricity: circuit makers and breakers
Electric switch details
Contact
C428S673000, C428S685000, C428S929000
Reexamination Certificate
active
07923651
ABSTRACT:
An electrical contact comprising a silver-coated stainless steel strip, which has an underlying layer comprising any one of nickel, cobalt, nickel alloys, and cobalt alloys, on at least a part of the surface of a stainless steel substrate, and has a silver or silver alloy layer formed as an upper layer, in which a copper or copper alloy layer with a thickness of 0.05 to 2.0 μm is provided between the silver or silver alloy layer and the underlying layer; and a producing method of the above-described electrical contact, in which the silver-coated stainless steel strip is subjected to a heat-treating in a non-oxidative atmosphere.
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English Translation of JP 2004-263274, Sep. 24, 2004.
Chinese Office Action dated Oct. 9, 2009 issued in corresponding Chinese patent Application No. 2004800383323.
Mihara Kuniteru
Suzuki Satoshi
Tokuhara Naofumi
The Furukawa Electric Co. Ltd.
Westerman Hattori Daniels & Adrian LLP
Zimmerman John J
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