Patent application number | Description | Published |
20080277186 | Power steering apparatus - A power steering apparatus ( | 11-13-2008 |
20080277187 | Power steering apparatus - An engine driven pump | 11-13-2008 |
20080289897 | Steering Apparatus for a Vehicle Having Front and Rear Steerable Wheels - An apparatus ( | 11-27-2008 |
20090101429 | Steer-by-wire steering apparatus with actuatable mechanism - A steering apparatus ( | 04-23-2009 |
20090292421 | STEERING APPARATUS - An apparatus for use in turning steerable vehicle wheels upon manual rotation of a hand wheel includes a torque sensor connected with the hand wheel. A controller is connected with the torque sensor and a rear steering gear. The controller is operable to effect operation of the rear steering gear in response to an output from the torque sensor upon manual application of at least a predetermined torque to the hand wheel. The torque sensor has an output which corresponds to a torque which is less than the predetermined torque throughout turning of the front wheels through a first range of turning movement. The torque sensor has an output which corresponds to a torque which is at least as great as the predetermined torque which occurs when turning of the front wheels during a second range of turning movement of the front wheels. The controller is operable to effect operation of the rear steering gear in response to the output from the torque sensor through the first range of turning movement of the front wheels so that the steering angle of the rear wheels has a first relationship to the steering angle of the front wheels. The controller being operable to effect operation of the rear steering gear in response to the output from the torque sensor through the second range of turning movement of the front wheels so that the steering angle of the rear wheels has a second relationship different from the first relationship to the steering angle of the front wheels. | 11-26-2009 |
20090314572 | Closed center valve steering system with adjustable pressure - The present invention relates to an apparatus ( | 12-24-2009 |
20100070136 | Method of controlling a vehicle steering apparatus - A method for controlling a steering apparatus ( | 03-18-2010 |
20110198146 | STEERING APPARATUS - An improved apparatus ( | 08-18-2011 |
20110313621 | POWER STEERING APPARATUS AND METHOD - An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. An engine driven pump connected with the power steering motor assembly is driven by an engine of the vehicle to supply fluid under pressure to the power steering motor assembly. A controller increases engine speed when the vehicle is motionless and a steering wheel is rotated. A method for controlling the speed of an engine to provide a predetermined steering assist to a steering apparatus includes determining if the vehicle is motionless and determining if the steering wheel is being rotated. The speed of the engine is increased if the vehicle is motionless and the steering wheel is being rotated to provide the predetermined steering assist to the steering apparatus. | 12-22-2011 |
20120312624 | POWER STEERING GEAR ASSEMBLY - A power steering gear assembly | 12-13-2012 |
20120318603 | STEERING APPARATUS FOR TURNING MULTIPLE SETS OF STEERABLE VEHICLE WHEELS - A steering apparatus ( | 12-20-2012 |
20130030655 | METHOD OF CONTROLLING A VEHICLE STEERING APPARATUS - A method for controlling a steering apparatus ( | 01-31-2013 |
20130075186 | APPARATUS FOR USE IN TURNING STEERABLE VEHICLE WHEELS - An apparatus includes a hydraulic power steering motor. A continuously variable transmission has an input shaft rotatable under the influence of force transmitted from the engine and an output shaft operable to drive a pump. The continuously variable transmission is operable to drive the pump at a first speed when one of the input and output shafts of the continuously variable transmission rotates at a first speed. The continuously variable transmission is operable to drive the pump at a second speed when the one of the input and output shafts rotates at a second speed. A centrifugal sensor is connected with the one of the input and output shafts. The centrifugal sensor transfers rotational movement of the one of the input and output shafts to a linearly displaceable input member of the continuously variable transmission to change the speed at which the pump is driven. | 03-28-2013 |
20130075187 | APPARATUS FOR USE IN TURNING STEERABLE VEHICLE WHEELS - An apparatus ( | 03-28-2013 |
20130240287 | APPARATUS FOR USE IN TURNING STEERABLE VEHICLE WHEELS - An apparatus ( | 09-19-2013 |
20140069734 | POWER STEERING APPARATUS - An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. A first pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle to supply fluid under pressure to the power steering motor assembly. A second pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle. A valve connected with the power steering motor assembly and the second pump directs fluid flow from the second pump to at least one of the power steering motor assembly and reservoir during operation of both the first pump and the second pump. A pumping mechanism includes a first pumping area defining the first pump and a second pumping area defining the second pump. The first pumping area is smaller than the second pumping area. | 03-13-2014 |