Motor-driven power steering apparatus

Details Motor-driven power steering apparatus Motor-driven power steering apparatus

2006-05-31

2009-10-20

Winner, Tony H. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

Reexamination Certificate

active

07604087

ABSTRACT:
In a motor-driven power steering apparatus which converts a rotation of an electric motor into a linear stroke of a rack shaft by a power transmission mechanism, and steers a wheel coupled to the rack shaft, there is provided an automatic neutral restoring means for judging a vehicle stop and a manual steering rest, and rotating the electric motor as to restore a detected steering angle of a steering angle sensor to a neutral position so as to execute an automatic steering, when the steering angle is out of the neutral position.

REFERENCES:
patent: 4681183 (1987-07-01), Oshita
patent: 5528497 (1996-06-01), Yamamoto et al.
patent: 6129172 (2000-10-01), Yoshida et al.
patent: 6184637 (2001-02-01), Yamawaki et al.
patent: 6408234 (2002-06-01), Wittig
patent: 6424895 (2002-07-01), Shimizu et al.
patent: 7075456 (2006-07-01), Tanaka et al.
patent: 7181325 (2007-02-01), Niessen et al.

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