Steering control apparatus

Motor vehicles – Steering gear – With alternate emergency power means

Reexamination Certificate

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Details

C180S402000, C192S038000

Reexamination Certificate

active

07469768

ABSTRACT:
A vehicle steering system is disclosed that includes a steering portion, a steered portion, and a clutch mechanism. The steering portion includes operations input mechanism and a reaction adding device. The steered portion includes steering controlled wheels and a steered force adding device. The clutch mechanism mechanically connects the steering portion and steered portion through an engagement. The clutch mechanism has a permanent magnet and an electromagnetic coil so as to form an electromagnetic clutch that releases when a current is applied such that a magnetic force in the direction that cancels a magnetic force of the permanent magnet is generated for the electromagnetic coil. The electromagnetic clutch engages when a current is not applied to the electromagnetic coil. The vehicle steering system further includes a controller that generates the magnetic force in the same direction as the magnetic force direction of the permanent magnet for the electromagnetic coil when an abnormality is generated for the steering system.

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patent: 6938721 (2005-09-01), Ono et al.
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patent: 2003/0051961 (2003-03-01), Yasui et al.
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patent: 2004/0182670 (2004-09-01), Nojiri et al.
patent: 2004-090783 (2004-03-01), None

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