Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7624836 | Steering system having multiple strategies and variable deadzone A steering system for a machine having at least one steerable traction device is disclosed. The steering system may have a steering actuator operatively connected to the at least one steerable traction device, and a travel speed sensor configured to generate a signa... | 12/01/2009 |
| 7434653 | On-demand electro-hydraulic steering system A hydraulic steering system for a work machine may include a first steering actuator having a first and a second chamber. In addition, the steering system may include a second steering actuator having a third and a fourth chamber. A multi-position directional valve ... | 10/14/2008 |
| 7389848 | Hydraulic power steering assistant The invention generally relates to an improvement of conventional Hydraulically Power Assisted Steering system (HPAS-system) arranged to supply a steering assist force to the steering assembly of a vehicle as a response to a torque applied by a driver to the steerin... | 06/24/2008 |
| 7364004 | Apparatus for use in turning steerable vehicle wheels An apparatus (10) for use in turning steerable vehicle wheels (14, 16) includes a hydraulic power steering motor (12). A pump (26) is operable to supply hydraulic fluid to the power steering motor (12). A gearset (50) is con... | 04/29/2008 |
| 7311033 | Retroactive device A retroactive device as part of a hydraulic servo-steering system that also includes a hydraulic servo-valve device, the retroactive device comprising an arrangement for hydraulically producing a restoring moment into a central position that produces the restoring m... | 12/25/2007 |
| 7272478 | Control system for active attenuation of torque-steer via electric power steering The present invention provides a device for dynamically counteracting torque steer which includes a processor adapted to calculate a correction factor from a calculated axle torque on front wheel drive half shafts of the vehicle. A power circuit is provided responsi... | 09/18/2007 |
| 7251933 | Flow rate control device for power steering Provided are a hydraulic pump 7, an electromagnetic flow rate control valve 2 that controls the flow rate of hydraulic oil supplied from the hydraulic pump 7 to a power steering device PS, and a pressure compensating valve 4 that maintain... | 08/07/2007 |
| 7249608 | Flow control for power steering The flow control device comprises a supply passage (2) for supplying hydraulic fluid discharged by a pump (1) to a power steering output section (8); a variable throttle section (3) situated at an intermediate position of the supply passa... | 07/31/2007 |
| 7232007 | Method for operating a power-assisted hydraulic steering system in a motor vehicle A method of operating a power-assisted hydraulic steering system of a motor vehicle having a hydraulic pump mechanically driven by a vehicle drive assembly, and having an additional function which reduces the amount of power assistance at a high driving speed in com... | 06/19/2007 |
| 7225894 | Power steering apparatus An engine driven pump 24 is connected with a power steering motor assembly 18. An electric motor 36 drives a pump 34 connected with the power steering motor assembly 18. A control apparatus 38, 44, 52, 62 and 72 effec... | 06/05/2007 |
| 7213676 | Power steering system In a power steering system employing a power cylinder for steering assistance, hydraulic pressure is supplied through a pair of fluid lines to respective hydraulic chambers of the power cylinder. Check valves are provided to charge a hydraulic pressure in a communic... | 05/08/2007 |
| 7164978 | Vehicle electro-hydraulic power steering unit A vehicle electro-hydraulic power steering unit includes: a steering mechanism steering a steering wheel in a steering direction; an electro-hydraulic pump; a piston mechanism assisting the steering mechanism in a steering direction; a hydraulic circuit causing an a... | 01/16/2007 |
| 7124855 | Flow controlling apparatus for power steering A flow controlling apparatus for a power steering system includes a variable throttle mechanism installed in the pump to change the flow rate of discharged oil from the pump to a hydraulic device; a linear solenoid mechanism controlling the variable throttle mechani... | 10/24/2006 |
| 7070019 | Power assisted steering for all terrain vehicle An all terrain vehicle has a frame carried by a group of wheels. At least one of the wheels is steerably connected to the frame. A steering handle assembly is rotatably connected to the frame. A servo valve has an input shaft connected to the steering handle assembl... | 07/04/2006 |
| 7055643 | Apparatus for controlling a power-assisted steering gear in response to vehicle speed An apparatus (10) for helping to turn steerable wheels (12) of a vehicle comprises a hydraulic power-assisted steering gear (16). An electric motor (92) actuates the steering gear (16). A pump (84) supplies the steering gear... | 06/06/2006 |
| 7047996 | Flow controlling apparatus A flow controlling apparatus to control flow rate of working fluid discharged from pump apparatus to a power steering apparatus including a electric variable throttle, a solenoid mechanism and a spool. The solenoid mechanism varies opening degree of the electric var... | 05/23/2006 |
| 7040449 | Power steering gearbox mechanism for a vehicle including a hydraulic fluid flow control device dependant from a speed at which the vehicle is running Steering gearbox mechanism for automotive vehicles that allows feeding the hydraulic fluid control mechanism of said steering mechanism with pressurized hydraulic fluid, depending on the vehicle's working conditions. Thus, when the vehicle is stopped or running at a... | 05/09/2006 |
| 6981568 | Vehicle speed response type power steering system A vehicle speed response type power steering system, wherein, when a vehicle is moving at a relatively slow speed, a relatively large auxiliary power is generated to enable a driver to easily adjust a steering of the vehicle with relatively little steering power, an... | 01/03/2006 |
| 6971626 | Independent intelligent limit switch A digital valve positioning system is disclosed. The system comprises a valve, a valve controller having a controller microprocessor and a controller memory and a valve actuator having an output coupled to the valve to control the position of the valve over a range ... | 12/06/2005 |
| 6966398 | Apparatus for controlling a power-assisted steering gear in response to vehicle speed An apparatus (10) for helping to turn steerable wheels (12) of a vehicle comprises a hydraulic power-assisted steering gear (16). An electric motor (92) actuates the steering gear (16). A pump (84) supplies the steering gear... | 11/22/2005 |
| 6856870 | Power steering system A power steering system capable of giving a driver no discomfort even when an incoming current instruction value sharply decreases. The power steering system comprises a controller C for determining a solenoid current instruction value SI on the basis of a current i... | 02/15/2005 |
| 6845310 | Power steering system A power steering system capable of preventing an unnecessary standby flow produced in high speed travel. A controller C determines a basic current instruction value Id based on a current instruction value I1 in accordance with a steering angle detected by a steering... | 01/18/2005 |
| 6708795 | Steering damper system To generate a damping force in a steering damper only upon an unintentionally caused handle action when it is truly necessary to restrain the turning of the handle, according to whether the cause of a handle action is intentional or unintentional. A rotation type st... | 03/23/2004 |
| 6686835 | Rear wheel steering angle control apparatus A rear wheel steering angle control apparatus is provided with a rear wheel steering angle determining unit and a rear wheel steering mechanism so as to determine a steering angle ratio based upon vehicle speed and perform a rear wheel steering angle cont... | 02/03/2004 |
| 6668967 | Method of steering a vehicle The invention concerns a method of steering a vehicle, particularly an articulated vehicle, in which a valve element of a main valve is moved so that it releases or closes connections between a supply connection arrangement and a working connection arrang... | 12/30/2003 |
| 6619420 | Rack and pinion steering gear with hydraulic yoke assembly An apparatus (10) for turning steerable wheels of a vehicle comprises a housing (12). A rack bar (54) is movable longitudinally relative to the housing (12) for turning the steerable wheels. A pinion gear (68) is located within the housing (12). Teeth (76... | 09/16/2003 |
| 6499557 | Power steering For an energy-saving type control, a value of a control low rate QP controlled by a flow control valve V is closer to a value of a flow rate required by an output side such as a power cylinder 8, a steering valve 9 or the like, to suppress a driving torqu... | 12/31/2002 |
| 6484841 | Power steering For an energy-saving type control, a value of a control low rate QP controlled by a flow control valve V is closer to a value of a flow rate required by an output side such as a power cylinder 8, a steering valve 9 or the like, to suppress a driving torqu... | 11/26/2002 |
| 6390228 | Hydraulic power steering apparatus for vehicle A hydraulic power steering apparatus for a vehicle is provided with a main control valve in which a valve opening degree is controlled on the basis of a relative movement between an input shaft interlocking with a steering wheel and an output shaft interl... | 05/21/2002 |
| 6366842 | Power steering apparatus A motor is stopped when a steering angular speed is not greater than a stop threshold VS and a motor electric current value Im is kept within a motor stop range ƊI for a predetermined time period. The value of a steering torque increases as the motor ele... | 04/02/2002 |
| 6064166 | Power steering apparatus A power steering apparatus is provided, which is adapted to generate a steering assist force by a hydraulic pressure of a pump driven by an electric motor. The apparatus includes: a vehicle speed sensor for sensing a vehicle speed; and a control circuit f... | 05/16/2000 |
| 5794736 | Fluid control system for a vehicle power assisted steering mechanism A fluid control system (10) for a vehicle power steering mechanism having a manually driven steering member and a fluid driven driving member (16) operatively connected to steering means of the vehicle by which steerage of the vehicle is achieved, the con... | 08/18/1998 |
| 5771989 | Power steering system An apparatus for use in a vehicle to control a flow of fluid to a power steering motor includes inner and outer valve members (40 and 42) which are disposed in a housing (44) and are rotatable relative to each other to control fluid flow to a power steeri... | 06/30/1998 |
| 5769121 | Rotary slide valve for power-assisted steering in motor vehicles A rotary slide valve (1) for the power steering of motor vehicles contains a rotary distributor (4) in a valve bore (5) of a valve housing (2), which distributor is connected with a valve inlet member (23). A control bushing (7) is rotatably guided over a... | 06/23/1998 |
| 5740879 | Power steering apparatus A vehicle speed responsive power steering apparatus enables a pressure which acts upon a power cylinder to be variably controlled in accordance with a vehicle speed or the like, thus allowing an assisting force to be controlled in a variable manner. A con... | 04/21/1998 |
| 5713429 | Power steering system A power steering system includes first and second valve members (40 and 42) which are movable relative to each other to port fluid to a vehicle power steering motor (31) and a pump (24) for providing fluid to the first and second valve members (40 and 42)... | 02/03/1998 |
| 5711394 | Power steering apparatus with motor driven pump A electric motor, which drives a fluid pressure pump used to derive a steering assist force, is controlled in a required manner using a simplified arrangement. Specifically, a pump 11 which feeds a fluid pressure in order to produce an assist force is dri... | 01/27/1998 |
| 5687810 | Power assistance steering system for use in a vehicle A power assistance steering system for use in a vehicle comprises a restricting mechanism including a cylindrical reaction piston having a reaction surface on which said reaction pressure is applied in order to cause said reaction piston to be biased down... | 11/18/1997 |
| 5634527 | Speed responsive power steering A main servo valve 4 is switched in response to a relative angular displacement between an input and an output shaft for supplying an operating oil discharged from a pump to or displacing such operating oil from a power cylinder 6. An auxiliary servo valv... | 06/03/1997 |
| 5627754 | Method for controlling a front and rear wheel steering vehicle To the end of ensuring a brisk maneuverability of a front and rear wheel steering vehicle without causing any unstable behavior of the vehicle, the rear wheels are steered in an opposite phase relationship to the front wheels to offset an under-steer tend... | 05/06/1997 |
