CONTROL DEVICE FOR CONTROLLING SLAT BLINDS UP AND DOWN
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United States of America Patent
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N/A
Issued Date -
Dec 10, 2015
app pub date -
May 28, 2015
filing date -
Jun 10, 2014
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A control device for controlling blinds up and down includes a case and a shaft is rotatably located in the case. A coil spring is located in a reception box in the case and has a connection end which extends through the wall of the reception box and is connected to a mandrel. The shaft securely extends through a passage of the mandrel which is co-rotatable with the shaft. A cover is mounted to the case and a gear unit is located on the cover. The gear unit includes a first bevel gear and a second bevel gear which is engaged with the first bevel gear which drives the second bevel gear. The second bevel gear is connected to the mandrel which is co-rotatable with the second bevel gear. The coil spring is wrapped to the mandrel and retrieved in the reception box when the blinds are lowered and lifted.
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