Vehicle steering system comprising a device for altering the transmission ratio
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United States of America Patent
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Jul 28, 2009
Grant Date -
Nov 23, 2006
app pub date -
Aug 17, 2004
filing date -
Sep 16, 2003
priority date (Note) -
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Abstract
A vehicle steering device has a single electric motor which, at the same time, introduces energy for desired rotational speed conversion and auxiliary power support into the system. Steering interventions by a driver of the vehicle, in the form of a driving moment exerted by a vehicle steering wheel, are superimposed with a driving movement of the electric motor, and these two motors are initiated jointly onto a driving element.
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