Current pickup device for an electric vehicle powered by a self-insulated power line
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United States of America Patent
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Apr 23, 2002
Grant Date -
N/A
app pub date -
May 9, 2000
filing date -
Jun 30, 1997
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A current pickup device wherein a supporting structure (104), carried in articulated manner by an electric vehicle (80), supports an elongated central permanent magnet (147), and a pair of current pickup members (132a, 132b) spaced with respect to each other on opposite sides of the central magnet (147). The current pickup device may be used in conjunction with a power line wherein a number of insulated conducting elements (34) are arranged in the traveling direction (8) of the electric vehicle (80), and are supplied successively as the electric vehicle travels along the line. The permanent magnet (147) interacts with ferromagnetic reference elements (170a, 170b) extending along the power line and in a predetermined position with respect to the conducting elements (34), to position the supporting structure (104) in a self-centered position in which the field lines generated by the magnet (147) at least partly enter the ferromagnetic reference elements (170a, 170b) along a minimum path, and in which the current pickup members (132a, 132b) mate respectively with at least one conducting element (34) and a continuous ground line extending parallel to the conducting elements (34).
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