Push-pull chain and actuator
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United States of America Patent
Stats
-
Aug 28, 2012
Grant Date -
May 14, 2009
app pub date -
Apr 26, 2005
filing date -
May 12, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A push-pull chain that can bend in one direction only, and is provided with at least two rollers on each of the driving pins, one of the rollers engages a drive sprocket and the other of said at least two rollers engages a chain guide surface. An actuator for e.g. opening and closing a window that uses this dual-roller push-pull chain. A link driven push-pull chain that can bend in one direction only, with links that is shaped as an engagement surface for engaging a drive sprocket. An actuator for e.g. opening and closing a window that uses the link driven push-pull chain.
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