Electric contact with base metal
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United States of America Patent
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-
Aug 18, 1992
Issued Date -
N/A
app pub date -
Apr 2, 1991
filing date -
Oct 3, 1988
priority date (Note) -
In Force
status (Latency Note)
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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.
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