Lockable chain winder
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United States of America Patent
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Jul 25, 2000
Grant Date -
N/A
app pub date -
Aug 27, 1998
filing date -
Feb 28, 1996
priority date (Note) -
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Abstract
A lockable chain winder for opening and closing windows has an internal mechanism which includes a stop member (16) which can be moved to engage with the chain winder sprocket (15) in such a manner that the sprocket (15) can freely rotate on one direction, but not in the other direction.
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