Trolley pole mechanism for use on electrically-powered road vehicles
First Claim
1. A trolley pole mechanism for use on an electrically powered road vehicle fitted with an auxiliary power source, the mechanism drawing power from a pair of overhead lines when in a deployed or raised position and comprising two trolley poles, each of said poles articulated to the roof of the vehicle and supporting a contact head, lifting means supporting a terminal unit comprising an isolating cross member, means for maintaining said cross member perpendicular to the longitudinal axis of the vehicle and manipulating means being clamped to said contact heads while said lifting means are being raised, said manipulating means being mounted on and movable transversely of said terminal unit, laterally outwardly disposed sensors being fitted on said manipulating means, said cross member being responsive to contact with said pair of overhead lines for transversely moving said manipulating means from respective ends of said cross member so that said sensors contact said overhead lines, thereby bringing contact heads into contact with respective overhead lines.
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Accused Products
Abstract
A trolley pole mechanism for an electric vehicle fitted with an auxiliary power source draws power from overhead lines in a raised position. Its terminal unit comprises two contact heads, sensors responsive to contact with an overhead line, and head guides. A linkage articulated to the roof of the vehicle supports the terminal unit and maintains it perpendicular to and allows it to move perpendicular to the longitudinal axis of the vehicle. In one embodiment the linkage comprises two trolley poles each supporting a respective contact head. In an alternative embodiment the terminal unit is coupled to the roof of the vehicle by a single trolley pole which carries a linkage defining two articulated parallelograms. The linkage includes a tube which pivots about a horizontal axis on a turret on the roof of the vehicle swivelling about a vertical axis.
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Citations
21 Claims
- 1. A trolley pole mechanism for use on an electrically powered road vehicle fitted with an auxiliary power source, the mechanism drawing power from a pair of overhead lines when in a deployed or raised position and comprising two trolley poles, each of said poles articulated to the roof of the vehicle and supporting a contact head, lifting means supporting a terminal unit comprising an isolating cross member, means for maintaining said cross member perpendicular to the longitudinal axis of the vehicle and manipulating means being clamped to said contact heads while said lifting means are being raised, said manipulating means being mounted on and movable transversely of said terminal unit, laterally outwardly disposed sensors being fitted on said manipulating means, said cross member being responsive to contact with said pair of overhead lines for transversely moving said manipulating means from respective ends of said cross member so that said sensors contact said overhead lines, thereby bringing contact heads into contact with respective overhead lines.
- 11. A trolley pole mechanism for use on an electrically powered road vehicle fitted with an auxiliary power source, the mechanism drawing power from a pair of overhead lines when in a deployed or raised position and comprising a single trolley pole articulated to the roof of the vehicle and supporting a terminal unit comprising an isolating cross member, two contact heads mounted on guide means with laterally outwardly disposed sensors, said guide means being mounted on and movable transversely of said terminal unit, and means for maintaining said cross member perpendicular to the longitudinal axis of the vehicle, said cross member being responsive to contact with said pair of overhead lines for transversely moving said guide means from respective ends of said cross member so that said sensors contact said overhead lines, thereby bringing contact heads into contact with respective overhead lines.
Specification