Steering apparatus for electric industrial vehicle

Details Steering apparatus for electric industrial vehicle Steering apparatus for electric industrial vehicle

2008-04-15

2008-04-15

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

No mechanical connection between steering shaft and steering...

C180S402000, C180S421000, C180S422000, C180S441000, C701S041000

Reexamination Certificate

active

07357215

ABSTRACT:
A controller controls right and left wheel drive motors based on a tire angle detected by a tire angle sensor such that the angular velocities of a pair of drive wheels about the center of a turn of the vehicle are equal to each other. The controller determines a steering speed of a steered wheel at the time a steering wheel is turned, from the tire angle detected by the tire angle sensor. Based on the steering speed, the controller controls a hydraulic pressure control motor, enabling a hydraulic pump to supply working fluid at a rate corresponding to the steering speed through a priority valve to a steering cylinder. With this arrangement, the vehicle is allowed to make a smooth turn.

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Japanese Office Action dated Mar. 20, 2007 issued by Japanese Patent Office for application No. 2002-366857.

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