Clutch controlled roller shade mechanism with integral overrunning ratchet
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United States of America Patent
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-
Apr 16, 1996
Grant Date -
N/A
app pub date -
Aug 15, 1994
filing date -
Aug 15, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bi-directional sprang clutch further including a ratchet and pawl so as to permit substantial torque to be transmitted to the shade roller only in one direction. In the other direction, the roller is nearly free to rotate so that the weight of the shade material depending from one side of the roller exerts a torque on the roller which prevents reverse rolling.
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