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Class Information
Number: 180/421
Name: Motor vehicles > Steering gear > With fluid power assist > With condition modulated steering
Description: Subject matter wherein there is provided a means responsive either to (a) a condition of operation of the vehicle or (b) a change thereof for continuously and proportionally controlling the flow of pressure fluid to the motive means to compensate for the influence of the condition or change thereof in the guidance of the vehicle by the operator.

Sub-classes under this class:

Class Number Class Name Patents
180/422 With electrical control 462

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8678129 Method for selectively charging and discharging a steering accumulator Mar. 25, 2014
8672085 Variable ratio transmission mechanism Mar. 18, 2014
8676445 Hydraulic steering diagnostic system and method Mar. 18, 2014
8666582 Apparatus for improving steering sensitivity of vehicle Mar. 4, 2014
8662241 Apparatus for use in turning steerable vehicle wheels Mar. 4, 2014
8666603 Methods, systems, and computer program products for providing steering-control feedback to an operator of an automotive vehicle Mar. 4, 2014
8651224 Power steering apparatus Feb. 18, 2014
8606463 Hydraulic steering system comprising a first and a second steering member and vehicle comprising a hydraulic steering system Dec. 10, 2013
8596407 Integral power steering apparatus Dec. 3, 2013
8594888 Steering control apparatus Nov. 26, 2013
8584791 Hydraulic power steering apparatus Nov. 19, 2013
8561751 System for selectively charging and discharging a steering accumulator Oct. 22, 2013
8561752 Power steering systems and methods Oct. 22, 2013
8534415 Center-pivot steering articulated vehicle with load lifting trailer Sep. 17, 2013
8522914 Pump apparatus and control method for controlling the pump apparatus Sep. 3, 2013
8509994 System and method for determining a steering lock angle of a vehicle Aug. 13, 2013
8479870 Power steering system Jul. 9, 2013
8483906 Driver assistance system having a plurality of assistance functions Jul. 9, 2013
8457842 Magnetic assisted power steering system Jun. 4, 2013
8439151 Apparatus for use in turning steerable vehicle wheels May. 14, 2013
8403103 Apparatus for use in turning steerable vehicle wheels Mar. 26, 2013
8380400 Control apparatus for vehicle and method for controlling vehicle Feb. 19, 2013
8374750 Method and device for recognizing driver fatigue using a torque sensor system Feb. 12, 2013
8312958 Power steering systems and methods Nov. 20, 2012
8272471 Isolation valve for a load-reaction steering system Sep. 25, 2012
8272472 Steering operation device Sep. 25, 2012
8256215 Fuel efficient hydraulic power steering Sep. 4, 2012
8245812 Device for controlling torsional stiffness of power steering system Aug. 21, 2012
8204647 Electric power steering system Jun. 19, 2012
8201656 Vehicle steering system Jun. 19, 2012
8181457 Fuel efficient hydraulic power steering May. 22, 2012
8151564 Fuel efficient hydraulic power steering Apr. 10, 2012
8079439 Hydraulic steering Dec. 20, 2011
8074763 Power assist steering system Dec. 13, 2011
8078373 Vehicle dynamics prediction with lane/path information using a preview-correction-prediction approach Dec. 13, 2011
8060278 Methods and systems for controlling steering in a vehicle using a primary active steering functionality and a supplemental active steering functionality Nov. 15, 2011
8050823 Method and apparatus for controlling lateral stability of vehicle Nov. 1, 2011
8041481 Power steering system and method of influencing the damping of a power steering system Oct. 18, 2011
8028789 Control adaptation of variable gear ratio steering Oct. 4, 2011
8020660 Pump device Sep. 20, 2011
8002074 Center-pivot steering articulated vehicle Aug. 23, 2011
7931112 Isolation valve for a load-reaction steering system Apr. 26, 2011
7926826 Load sensor device and steering apparatus for vehicle having the same Apr. 19, 2011
7913800 Steering system with variable flow rate amplification ratio and associated method Mar. 29, 2011
7908057 Power steering apparatus Mar. 15, 2011
7905316 Clutch device of oil pump in power steering system Mar. 15, 2011
7891459 Multiple ratio steering for loader Feb. 22, 2011
7891458 Steering system for engineering vehicle Feb. 22, 2011
7878512 Alignment changing control device Feb. 1, 2011
7874564 Torque steer reduction system Jan. 25, 2011

1 2 3 4 5

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