Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1979-02-08
1981-01-20
Rutledge, L. Dewayne
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428669, 428674, 428614, B32B 1502
Patent
active
042463220
ABSTRACT:
This invention relates to fabricating wire and particularly wire at least the surface of which consists of platinum or a platinum-based alloy for use in the jewellery industry. The wire according to the invention comprises a first portion at least the outer surface of which consists essentially of platinum or a platinum-based alloy and a second portion in the form of a coating or layer on the outer surface of the first portion, the second portion consisting essentially of a metal or alloy which is soft relative to the platinum or platinum-based alloy. Preferably, the second portion consists essentially of copper.
REFERENCES:
patent: 3776776 (1973-12-01), Petrou
patent: 3905828 (1975-09-01), Barber
Lloyd Ernest E.
Wall John E.
Johnson Matthey & Co., Limited
Rutledge L. Dewayne
Saba W. G.
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