Overhead trolley wire insulated support post
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United States of America Patent
Stats
-
Dec 2, 1986
Grant Date -
N/A
app pub date -
Dec 18, 1984
filing date -
Dec 19, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an overhead electric traction system for railways, a simple and inexpensive cantilever structural assembly includes a pole (1) comprising a lower part (3), an upper part (4) which is separately formed with respect to and is mounted on the lower part and to which a cantilever structure (21) is attached and, inter-connected between the upper end of the lower part and the lower end of the upper part, a tubular insulator (3) of plastics insulating material. The insulator (3) will withstand any normal mechanical loading to which the pole (1) will be subjected while it is in service and is of such a shape as to provide the necessary minimum creepage path between neighboring ends of the lower part (3) and upper part (4) of the pole.
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