TRANSMISSION DEVICE FOR CURTAINS
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United States of America Patent
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-
N/A
Issued Date -
Feb 20, 2014
app pub date -
Sep 14, 2012
filing date -
Aug 16, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A transmission device for curtains includes a bottom board and a mandrel unit is connected on the bottom board. The mandrel unit has first frames and a mandrel which is engaged with the engaging portions of the first frames. The bottom board has multiple guide holes and the first frames are easily connected to the bottom board at the suitable guide holes. A second frame includes a bottom plate, a top plate, a wheel and multiple rollers, wherein the wheel and the rollers are connected between the bottom plate and the top plate. The wheel has a spool and a cord is wrapped between the spool and the mandrel. A coil spring is connected to the spool. Two control cords are wrapped to the mandrel and extends through the head box of the curtain and are connected to the bottom bar of the curtain.
First Claim
Family
International Classification(s)
Cited Art Landscape
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