Overhead electric traction systems
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United States of America Patent
Stats
-
Jul 1, 1986
Grant Date -
N/A
app pub date -
Jan 9, 1981
filing date -
Jan 9, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an overhead electric traction system, an overhead contact wire is enclosed throughout its length within an elongate protective cover of resilient electrically insulating material. The cover is secured to the contact wire, is symmetrical about a longitudinally extending vertical plane passing through the axis of the contact wire and includes a pair of transversely extending base walls which underlie and are spaced from the contact wire and abut in the vertical plane. When engaged by a transversely extending elongate current collector carried by a travelling vehicle, the base walls are deflected upwardly and outwardly away from one another to expose the running surface of the contact wire and permit the current collector to effect electrical contact with and collect current from the contact wire; after passage of the current collector, the base walls return to their original undeflected positions so that the contact wire is again enclosed within the cover.
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