BELT PULLEY DECOUPLER
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United States of America Patent
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app pub date -
Jan 28, 2016
filing date -
Feb 12, 2015
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Abstract
A belt pulley decoupler is provided for transmitting a drive torque from the belt of an auxiliary unit belt drive to the shaft of one of the auxiliary units. The decoupler a belt pulley, a hub fixed on the shaft, and a one-way clutch and a coil torsion spring arranged in series in the drive torque flow between the belt pulley and the hub. The spring extends about the axis of rotation of the belt pulley decoupler and widens radially under transmission of a drive torque. The ends of the coil torsion spring contact respective axially ascending ramp-shaped spring support surface of a first spring plate and of a second spring plate. At least one of the spring plates is a sheet metal shaped part having a spring support surface integrally formed thereon.
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