Offset detecting device for trolley-assisted vehicles

Details Offset detecting device for trolley-assisted vehicles Offset detecting device for trolley-assisted vehicles

1987-07-22

1988-05-24

Freeh, William L.

Electricity: transmission to vehicles

Collectors

Trolley retrievers

191 8, B60L 504, B60L 900

Patent

active

047459972

ABSTRACT:
Offset condition detecting device for detecting offset condition of pantographs from overhead contact wires by means of electric current detected by a contact element mounted on the pantograph and insulated therefrom. The detection is made electrically and in case of emergency the pantographs are lowered down at high speed to prevent damage of pantographs of trolley-assisted vehicles.

REFERENCES:
patent: 757107 (1904-04-01), Gibbs
patent: 1682432 (1928-08-01), Smith
patent: 2018241 (1935-10-01), Viele
patent: 4340920 (1982-07-01), Gill
patent: 4694125 (1987-09-01), Takei

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