Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1973-10-18
1976-10-12
Schafer, Richard E.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29182, 252512, 252514, 252515, 252518, 200264, C22C 2800, H01H 102
Patent
active
039855120
ABSTRACT:
Electric contact material having good solderability, consists of a porous matrix of sintered powder particles of a refractory metal, such as tungsten or molybdenum, with its pores impregnated with a metal alloy consisting of a telluride-forming metal, such as copper, silver or lead, and a sufficient amount of a telluride of such metal to form a brittle deposit of tellurium and the telluride-forming metal, both in elemental form, on the material's surface, apparently produced by decomposition and vaporization of the telluride due to electrical arcing, and which vapor after the arcing and rapid cooling of the material, condenses on the material's surface to form the deposit. This brittle deposit provides an effective reduction in the contact welding force of the material as compared to prior art electric contact materials of good solderability.
REFERENCES:
patent: 3366463 (1968-01-01), Schreiner
patent: 3438753 (1969-04-01), Kenney et al.
patent: 3505065 (1970-04-01), Gwyn
patent: 3721550 (1973-03-01), Schreiner et al.
Hassler Heinrich
Schreiner Horst
Schafer Richard E.
Siemens Aktiengesellschaft
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