Motor vehicles – Steering gear – With electric power assist
Reexamination Certificate
2005-09-20
2005-09-20
Winner, Tony (Department: 3611)
Motor vehicles
Steering gear
With electric power assist
Reexamination Certificate
active
06945353
ABSTRACT:
A rack (1) and pinion (4) steering gear for a vehicle in which the steering angle ratio varies as a function of at least both the steering wheel angle input by the driver and vehicle speed. The steering gear comprising a rack (1) laterally displacable with respect to a steering gear housing and a pinion (4) laterally movable within the housing substantially in a direction of travel of the rack (1) whilst engaged with the rack (1). The steering angle ratio is increased in a central region of travel of the rack (1) when compared to regions either side thereof, and steering angle ratio is further increased in the central region as vehicle speed increases.
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SAE International, SAE Technical Paper Series, 1999-01-0395, “Improvement in Driver-Vehicle System Performance by Varying Steering Gain with Vehicle Speed and Steering Angle: VGS etc.,” Shimizu et al., Intl. Congress and Exposition, Mar. 1-4, 1999.
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Bishop Steering Technology Limited
Winner Tony
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