Rolled-up blind driving mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 8, 2003
app pub date -
Oct 23, 2001
filing date -
Oct 23, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A rolled-up blind driving mechanism includes a chain of beads adapted to rotate a chain wheel assembly to further drive a torsional spring on a spring holder to rotate an axle sleeve in rolling up/letting off the blind, the torsional spring having two end tips, a curved connecting arm, and two coils connected between the connecting arm and the end tips of the rolled-up blind, the connecting arm and the end tips being disposed at two sides of an inside protruding portion of the axle sleeve for enabling the axle sleeve to be rotated to roll up/let off the blind of the rolled-up blind when pulling the chain of beads to rotate the chain wheel assembly clockwise/counter-clockwise on the spring holder.
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