Drive assembly with dynamic tensioning device
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United States of America Patent
Stats
-
Jul 18, 2006
Grant Date -
Oct 21, 2004
app pub date -
Apr 21, 2003
filing date -
Apr 21, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive assembly for a closed loop cable system in which a flexible driver member drives a door or the like back and forth has the flexible drive member wrapped around and driven by a drive pulley. The drive assembly includes a motor unit having a motor shaft that rotates about a drive axis for rotating the drive pulley about a pulley axis, and a tensioning mechanism for adjusting the position of the pulley axis with respect to the drive axis responsive to tension in the flexible drive member.
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