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
-
Jun 28, 2005
Grant Date -
Sep 9, 2004
app pub date -
Mar 12, 2004
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 curve and a trolley for negotiating the curve. The trolley includes an externally located drive section and a rolling section having first and second roller portions located within the track. The first roller portion includes rollers for rolling on flange portions of the track. The second roller portion includes a yoke-mounted driven wheel and a pair of support rollers. The driven wheel rolls on an inner surface of the top of the track. The pair of support rollers roll on flange portions of the track and are mounting on respective rods for pivoting action about vertical axes. The drive section includes a motor powered driving wheel which extends partially into the track to engage the driven wheel. The drive section also includes an articulated joint coupling the first and second roller portions together.
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