Shade with a Shear Pin and Method for Pretensioning a Shade
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United States of America Patent
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N/A
Issued Date -
Jan 16, 2014
app pub date -
Jul 13, 2012
filing date -
Jul 13, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A roller shade is provided. The roller shade may include: a roller; an axle located in the roller; an adjustable counterbalancing mechanism configured to counter balance a rotation of the roller wherein the counterbalancing mechanism is configured to impart a rotational force on the roller and the rotational force is adjusted by rotating the axle; and a locking mechanism attached to the roller and configured to lock the axle at a given angular orientation, wherein the locking mechanism includes a shear pin. A method of tensioning a counterbalancing mechanism may also be provided. The method may include: mounting the counterbalancing mechanism to a shaft; mounting the lock wheel to the shaft; turning the shaft to tension the counterbalancing mechanism; and inserting a shear pin into a hole in the lock wheel to lock the shaft in place.
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