Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1987-12-09
1989-06-06
Nimmo, Morris H.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174 34, 174112, 174113R, 174115, 174117F, H01B 1102, H01B 708
Patent
active
048374059
ABSTRACT:
The cable is made up of a series of pairs stranded alternately in one direction and the other. At the locations of the reversal of the stranding direction, the individual conductors are kept in the form of a web and welded together side by side. Between two thus bonded segments, the adjacent pairs are twisted in opposite directions. A ground wire is provided with lengths of sheathing which come to be placed in the bonded segments. These segments are marked by deposition of a radioactive substance or other indicator material detectable during a subsequent stage of manufacture and actuating marking. Once overall stranding and jacketing have taken place, or during those stages, the bonded segments are spotted owing to the indicator substance and are marked visibly.
REFERENCES:
patent: 4034148 (1977-07-01), Lang
patent: 4359597 (1982-11-01), Paquin et al.
patent: 4381208 (1983-04-01), Baverstock
patent: 4408443 (1983-10-01), Brown et al.
patent: 4443277 (1974-04-01), Rokas
patent: 4461923 (1984-07-01), Bogese, II
patent: 4697051 (1987-09-01), Beggs et al.
patent: 4767891 (1988-08-01), Biegon et al.
Baz Dan G.
Bonjour Jacques L.
Maillefer S. A.
Nimmo Morris H.
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