Geometrical instruments
Patent
1976-07-13
1977-12-06
Lake, Roy
Geometrical instruments
339101, 339182RS, H01R 3900
Patent
active
040613810
ABSTRACT:
A twist-prevention device comprising two connecting members, respectively, for the incoming and outgoing current, mounted such that they can rotate relative to one another. The connecting members have a stepped section so as to permit easy assembly and disassembly relative to each another, and the connecting member for the incoming current is provided with annular contact strips or cable shoes which are connected to a power supply and located in stepped manner with respect to the axis of the member, whereas the connecting member for the outgoing current is provided with helically wound conductors also arranged in stepped manner on the steps of the member to separately make contact with the corresponding stepped cable shoes.
REFERENCES:
patent: 2645759 (1953-07-01), Solari
Farber Martin A.
Jones DeWalden W.
Lake Roy
Societe Anonyme FACO
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