Power steering apparatus

Details Power steering apparatus Power steering apparatus

2005-04-26

2005-04-26

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S443000, C701S041000

Reexamination Certificate

active

06883636

ABSTRACT:
A power steering apparatus for assisting steering by conferring a steering assisting force according to a steering manipulation to a steering mechanism. The apparatus includes an electric motor being driven under control according to the steering manipulation, and a deteriorated condition judging factor storage portion for storing a factor used for judging a deteriorated condition of the electric motor. The factor used for judging the deteriorated condition of the electric motor includes, for example, an accumulated value of load exerted on the electric motor.

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patent: 6408324 (2002-06-01), Wallace et al.
patent: 6690138 (2004-02-01), Kaji et al.
patent: 0 423 737 (1991-04-01), None
patent: 05-304795 (1993-11-01), None

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