Transmission assembly for a roller blind
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United States of America Patent
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Aug 27, 2013
Grant Date -
Feb 14, 2013
app pub date -
Aug 11, 2011
filing date -
Aug 11, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transmission assembly for a roller blind has a mounting frame, a roller, a coil spring, a spring axle, a turning element, a torsional spring, a major damper, a positioning device and a blind cloth device. The roller is mounted in the mounting frame. The coil spring is mounted in the roller. The spring axle is mounted in the coil spring. The turning element is connected to the spring axle. The torsional spring is mounted in the turning element. The major damper is connected to the coil spring and has a turning rod. The positioning device is mounted in the roller and has a rotating mount, a rail mount and a positioning ball. The rail mount is mounted in the rotating mount and has two rails. The positioning ball is mounted between the rotating mount and the rails. The blind cloth device is mounted the mounting frame.
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