Method for feeding an operating motor of a rolling shutter and a device for a driven rolling shutter
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United States of America Patent
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Jun 29, 2010
Grant Date -
Aug 14, 2008
app pub date -
Dec 6, 2005
filing date -
Dec 7, 2004
priority date (Note) -
Expired
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Abstract
The inventive method makes it possible to feed an alternating current electric motor used for operating a rolling shutter in a building by means of a gear whose performance substantially varies when a movable element drives or is driven by the rolling shutter. The electric motor is supplied, in certain phases, at a reduced tension, wherein the motor slipping measuring a relative speed deviation with respect to a zero running torque speed remains less the motor slipping when the rotor thereof ruts at a nominal speed at least if the rolling shutter does not meet obstacles. The drive for the rolling shutter for carrying out said method is also disclosed.
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