Trolley with tractor drive for use in curved enclosed tracks and system including the same
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United States of America Patent
Stats
-
Apr 13, 2004
Grant Date -
N/A
app pub date -
Feb 28, 2003
filing date -
Feb 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An enclosed track system comprising an enclosed track having at least one curved portion and a trolley including a rolling section having first and second roller portions located within the track and spaced from each other and an externally located drive section. The second roller portion comprises a drive wheel arranged to roll on an inner surface of the track. The drive section has an articulated joint coupling the first and second roller portions to each other. The drive section includes a motor to cause the drive wheel to rotate, whereupon the trolley rolls along the track, with the articulated joint enabling the first and second roller portions to pivot longitudinally with respect to each other so that the trolley can negotiate curves in the track.
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