Tensioning tool for a counterbalance system for sectional doors
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United States of America Patent
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-
Aug 31, 2010
Grant Date -
Jan 15, 2009
app pub date -
Sep 16, 2008
filing date -
Feb 26, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A door system (10) including, a door (D) movably mounted on a track assembly (15), a counterbalance system (20) connected to the door and having at least one spring (25), a tool adapter (26) proximate at least one end of the counterbalance system, a detachable winding assembly (30) adapted to selectively engage and selectively rotate the tool adapter to adjust tensioning of the spring, and a locking assembly (36) interacting with the counterbalance system to maintain a selected tensioning of the counterbalance system upon detaching the winding assembly from the tool adapter.
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