Retractable pantograph for downward withdrawal in the event...

Details Retractable pantograph for downward withdrawal in the event... Retractable pantograph for downward withdrawal in the event...

B - Operations, Transporting

60

L

335/22

B60L 5/24 (2006.01) B60L 5/14 (2006.01) B60L 5/28 (2006.01)

Patent

CA 1160299

A RETRACTABLE PANTOGRAPH FOR DOWNWARD WITHDRAWAL IN THE EVENT OF AN ABNORMAL FRONTAL LOAD ABSTRACT OF THE DISCLOSURE A movable structure for supporting a current- collector bow is pivotally mounted on a frame and lifted by means of a spring attached to the structure and to the frame. Upper members of the bow support structure permit displacement of the bow independently of the structure. Hook-engagement means or valve units are provided for neutralizing the lifting spring and transmission means are provided for connecting the bow-displacement means to the spring-neutralizing means. A load limiter inhibits the bow-displacement means below a predetermined load threshold value and releases the bow above this value.

379350

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