Torsional vibration damper or decoupler with wound wire springs in a drive pulley
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Dec 18, 2008
app pub date -
Jun 4, 2008
filing date -
Jun 4, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A drive pulley having a hub and a pulley rim is provided, which are mounted in one another so as to be rotatable about a rotational axis, with at least two wound wire springs which are arranged in each case between the hub and the pulley rim in such a manner that they are wound around the rotational axis. In each case one end is supported in the direction of rotation with respect to the hub and the other end is supported in the direction of rotation with respect to the pulley rim and which form a non-supported free spring length between the ends, and which are installed in such a manner that they are pretensioned with respect to each other. At least one of the wire springs bears at one end against a bearing region of one of the parts--hub and pulley rim--and then has a radial distance with respect to a curved supporting face on this one of the parts--hub and pulley rim respectively--which distance increases over the circumference and is reduced progressively to zero over the circumference when the parts--hub and pulley rim--are twisted with respect to each other, while the bearing region is extended into the region of the supporting face 45 and the free spring length is shortened.
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