Electricity: circuit makers and breakers – Electric switch details – Contact
Patent
1975-10-24
1977-10-11
Scott, James R.
Electricity: circuit makers and breakers
Electric switch details
Contact
29DIG4, 29630C, 75173C, 200144B, 200266, 200268, 228199, H01H 102, C22C 506
Patent
active
040537285
ABSTRACT:
A brazed joint between a beryllium-base part and a copper-base part comprises a first layer of brazing material in contact with the beryllium-base part. This brazing material is an alloy that just prior to brazing consists essentially of silver and a minor constituent of either: (a) tin in a percentage of 4% to 15% by weight of the alloy, (b) silicon in a percentage of 1% to 5% by weight of the alloy, or (c) indium in a percentage of 6% to 25% by weight of the alloy. Contacting this first layer and brazed thereto is a second layer of a material that just prior to brazing consists essentially of silver. Between the second layer and the copper-base part, there is another brazed connection, which is formed at temperatures exceeding 600.degree. C.
REFERENCES:
patent: 1658713 (1928-02-01), Fuller
patent: 2310568 (1943-02-01), Atlee et al.
patent: 2464821 (1949-03-01), Ludwick et al.
patent: 3083451 (1963-04-01), Atkinson
patent: 3373016 (1968-03-01), Roeder et al.
patent: 3402276 (1968-09-01), Scott
patent: 3440039 (1969-04-01), Watson
patent: 3828428 (1974-08-01), Wayland
patent: 3874941 (1975-04-01), Shibata
Popadick Carl C.
Talento Joseph L.
Freedman William
General Electric Company
Scott James R.
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