Motor vehicles – Steering gear – No mechanical connection between steering shaft and steering...
Reexamination Certificate
2008-01-29
2008-01-29
Morris, Lesley D. (Department: 3611)
Motor vehicles
Steering gear
No mechanical connection between steering shaft and steering...
C180S405000, C180S446000, C701S041000, C701S042000, C701S043000
Reexamination Certificate
active
11152206
ABSTRACT:
A steering apparatus for a steerable vehicle includes a steering unit, an operating unit, a backup unit, and a control unit. The backup unit selectively connects/disconnects the steering unit and the operating unit. The control unit is operable in two control modes including an SBW mode and a PS mode. In the SBW mode, the control unit separates the steering unit from the operating unit; controls a steer angle of the vehicle in accordance with a manual steering effort; and switches the control mode from the SBW mode to the PS mode when an SBW-to-PS mode switch condition is satisfied, the SBW-to-PS mode switch condition including a condition that the steer angle is larger than or equal to a first threshold angle. In the PS mode, the control unit connects the steering unit and the operating unit; controls an assist steering effort to boost the manual steering effort.
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Hara Kazuo
Kubokawa Noriki
Osonoi Tetsuya
Shitamitsu Kiyotaka
Arce-Diaz Marlon
Morris Lesley D.
Nissan Motor Co,. Ltd.
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