Motor vehicles – Steering gear – With electric power assist
Reexamination Certificate
2008-07-25
2010-06-29
Morris, Lesley (Department: 3611)
Motor vehicles
Steering gear
With electric power assist
C180S443000, C180S402000, C180S407000, C701S041000, C701S042000, C701S043000
Reexamination Certificate
active
07743875
ABSTRACT:
A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.
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Hidaka Kenichirou
Hidaka, legal representative Junko
Kojo Takahiro
Limpibunterng Theerawat
Makino Nobuhiko
Arce Marlon A
Denso Corporation
Morris Lesley
Nixon & Vanderhye PC
Toyota Jidosha & Kabushiki Kaisha
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