Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8162095 | Vehicle steering system of the by-wire design type A vehicle by-wire steering system includes a hydraulic default level. A hydraulic feed unit and a hydraulic actuating unit can be connected together by two hydraulic lines such that when an actuator is non-functional, a steering wheel rotational angle is transformed... | 04/24/2012 |
| 7694776 | Hydraulic steering system with protection against uncontrolled steering movements A hydraulic steering system (1) including a hydraulic steering unit (2) and an auxiliary device (3). Said The steering unit (2) feeds a hydraulic medium to a steering cylinder (5) according to the movement of a steering wheel (4... | 04/13/2010 |
| 7530422 | Force and position control for active front steering A steering system with reduced coupling between a position overlay unit and a torque overlay unit may include a remote valve assembly for controlling a hydraulic assist force or an electric motor for providing torque overlay and electric assist to a rack of a rack a... | 05/12/2009 |
| 7325645 | Power steering device A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch syst... | 02/05/2008 |
| 7311172 | Straddle carrier with power steering A steering system for a straddle carrier includes two side supports with steerable wheels, braces, a hoisting gear, an an upper frame. An operator's cab having a steering wheel is disposed at the upper frame. A servo motor with an inverter is mounted in operative co... | 12/25/2007 |
| 7306070 | Variable gear ratio hydraulic power steering device A variable gear ratio hydraulic power steering device 1 is provided with a variable ratio transmission mechanism 7 for varying the rotation transmission ratio between the rotational angle of a steering handle 31 and the rotational angle of a pin... | 12/11/2007 |
| 7302329 | Apparatus, system and method for magnetorheological clutch diagnostics An apparatus and method for monitoring and diagnosing the coil temperature of a magnetorheological (MR) clutch connected to a power steering pump of a vehicle is disclosed. The apparatus includes a processing circuit, and a storage medium, readable by the processing... | 11/27/2007 |
| 7207411 | Steer unit for steer-by-wire Steer unit for steer-by-wire comprising angle sensing means (12) for detecting the angular position of a steering wheel (11), processing means (10) connected to the angle sensing means (12) and connectable to a wheel position sensor (2... | 04/24/2007 |
| 7168245 | Work machine with supplemental power steering A steering system for a work machine having a hydrostatic transmission is disclosed. The steering system has a primary source of pressurized fluid and a steering control valve. The steering system also has a first fluid passageway fluidly connecting the primary sour... | 01/30/2007 |
| 7163078 | Hydrostatic drive The invention relates to a hydrostatic drive comprising at least one hydraulic pump (1) and a first and a second hydraulic motor (6, 25), which are respectively connected to said hydraulic pump (1) by means of two service lines (4, 41, 5, 5 | 01/16/2007 |
| 7155905 | Power steering apparatus A power steering apparatus includes a hydraulic power cylinder, and a reversible pump driven by a motor. A steering assist sensor senses a steering assist force provided to a steering wheel. A controller ascertains a pump discharge quantity of the reversible pump, a... | 01/02/2007 |
| 7143862 | Power steering device for a vehicle In a power steering device comprising a power steering pump, and to a method for operating a power steering device for a vehicle comprising a hydraulic circuit provided with a rotary slide valve, a steering cylinder and a control valve for adjusting the volume flow ... | 12/05/2006 |
| 7124579 | Anti jerk valve A hydraulic control system including a source (11) of fluid having a pressure responsive means (15) and an actuator. A main control valve (21) has ports (27,29) communicating with the actuator ports by means of first (41) and secon... | 10/24/2006 |
| 7055644 | Power steering system with hydraulic power assistance A hydraulic power-assisted steering system, in particular for motor vehicles, has a hydraulic pump for generating hydraulic pressure for assisting the steering and an electromagnetic valve, in addition to a motor for driving the hydraulic pump. The hydraulic pump ca... | 06/06/2006 |
| 7036445 | Watercraft steer-by-wire system A watercraft steer-by-wire control system for watercraft comprising: a direction control system including a rudder position sensor; a helm control system including at least one of; a helm position sensor to produce and transmit a helm position signal and an optional... | 05/02/2006 |
| 7021416 | Vehicle control with manual back up A manual control device for electrically driven and controlled steering, and/or accelerating and/or decelerating of a road vehicle, that includes a hand grip device, sensors for sensing a force and/or a movement imposed on the hand grip device which correspond to a ... | 04/04/2006 |
| 6948584 | Steering device A steering system, e.g., a hydraulic rack and pinion steering system for motor vehicles, includes a steering handle for prescribing a steering intention, a pressure medium source and a control valve device for controlling a flow of pressure medium to and from a serv... | 09/27/2005 |
| 6929086 | Motor vehicle steering system A steering system selectively operable in one of six modes: steer-by-wire with rear steering, steer-by-wire without rear steering, electronic power assist steering (EPAS) with rear steering, electronic power steering (EPAS) without rear steering, mechanical backup m... | 08/16/2005 |
| 6923290 | Closed circuit steering circuit for mobile vehicle A closed-circuit pump is provided that receives input from a steering unit in order to drive a steering cylinder. The closed-circuit pump is preferably a proportional bi-directional pump. The steering unit includes a steering wheel or similar device controlled by an... | 08/02/2005 |
| 6904998 | Device and method to ensure the steerability of an industrial truck The invention relates to a device and a method to ensure the steerability of an industrial truck that has a hydraulic steering system. The invention includes at least one gas generation cartridge (8) and a device (16) to activate the generation of the ... | 06/14/2005 |
| 6892605 | Hand wheel actuator having stationary hub A hand wheel actuator having a stationary hub is provided by a housing supporting a first shaft via bearings such that it is rotatable about its own axis. The first shaft has an upper end configured for attaching a hand wheel. The actuator also includes a position s... | 05/17/2005 |
| 6612393 | Steering system for motor vehicles A steering system functions in accordance with the "steer by wire" concept and has a normal operating system without positive coupling between the steering handle and the steered vehicle wheels, as well as an emergency operating system, which functions wi... | 09/02/2003 |
| 6595314 | Hydraulic steering system, for an articulated vehicle with wheel steering A hydraulic steering system (1) for a vehicle with two steering motor arrangements, particularly an articulated vehicle with wheel steering, with a hydraulic steering unit (2) having a measuring motor section (22, 23), with a selection valve (6), which co... | 07/22/2003 |
| 6581717 | Hydraulic steering arrangement A hydraulic steering arrangement with a steering handwheel which is connected with a hydraulic steering unit, and with a steering motor connected with a pump via a steering valve. In a steering arrangement of this kind, a simple construction is desired, t... | 06/24/2003 |
| 6571894 | Transmission mechanism for vehicles having HST and pressure oil supply system therefor A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in constru... | 06/03/2003 |
| 6548969 | Redundant steer-by-wire system An automotive steer-by-wire system is disclosed that includes a first network. The first network connects a first set of controllers for controlling a first set of motors. The steer-by-wire system further includes a second network that is independent of t... | 04/15/2003 |
| 6513619 | Electrically-driven power steering system An abnormality detection circuit for detecting abnormality of a CPU includes a command value check circuit for checking whether a current command value calculated by the CPU is normal or abnormal with respect to a torque signal, and a drive signal check c... | 02/04/2003 |
| 6502661 | Steering system for a vehicle The invention relates to a vehicle steering system comprising a steering linkage, a control hydraulic motor and a control hydraulic circuit, a steering wheel connected to the control hydraulic motor, and a control hydraulic cylinder connected to the contr... | 01/07/2003 |
| 6484839 | Steer-by-wire rotary actuator A steer-by-wire steering system for steering a set of road wheels is disclosed. The system comprises a controller and at least one actuator assembly connected to the controller and to the at least one wheel of the set of road wheels. The at least one actu... | 11/26/2002 |
| 6474437 | Power-assisted steering with hydraulic power assistance In a power steering system having hydraulic power support for motor vehicles, a steering gear shaft having a steering wheel is connected to an input element of a steering gear. An output element of the steering gear is connected to wheels of the vehicle t... | 11/05/2002 |
| 6386312 | Hydrostatic steering arrangement with dual control systems A hydrostatic steering arrangement with two control systems, each of which has a control unit with an inner and an outer rotary slide and a steering motor, one steering handwheel being common for both control units, and the control units being arranged in... | 05/14/2002 |
| 6374940 | Steering device for self-propelled working machines A steering device for self-propelled working machines. Steering cylinders are associated with each pair of wheels and a fluid which is suppliable from a valve unit to the cylinders. At least one hydraulic pump is connected to the valve unit via hydraulic ... | 04/23/2002 |
| 6367575 | Motor vehicle steering system A steering system for motor vehicles, in which a steering member or steering wheel and the steered vehicle wheels are hydraulically positively coupled for the steering actuation of the wheels. An additional servo system is provided which is responsive to ... | 04/09/2002 |
| 6354393 | Hydraulic power steering system for motor vehicles A hydraulic power steering system for non-tracked vehicles, particularly motor vehicles, has a steering adjustment of the steered vehicle wheels which takes place of a hydraulic actuating assembly which can be connected by a change-over valve with one res... | 03/12/2002 |
| 6336519 | Steering system for motor vehicles A steering system is provided for motor vehicles, in which, during the normal operation, the driver adjusts an actual steering angle value generator by way of a steering handle. A control and automatic control arrangement correspondingly operates the stee... | 01/08/2002 |
| 6283243 | Method for operating a vehicle steering system A way is provided to simulate the steering handle manual torques which correspond to a steering stop of the steered vehicle wheels for a vehicle steering system which can be operated in a normal mode and in an emergency mode. The steering system is capabl... | 09/04/2001 |
| 6269903 | Steering system for a vehicle High functional reliability for a vehicle steering system that can be switched between a normal mode with a steer-by-wire level and an emergency mode with a fall-back level is achieved by providing that the fall-back level has a hydraulic system which con... | 08/07/2001 |
| 6244371 | Steering system for non-track-bound motor vehicles A steering system of a non-track-bound motor vehicle having steered vehicle wheels which are operatively connected to a steering handle in normal operation only via an electronic regulating arrangement which checks itself continuously for correct operatio... | 06/12/2001 |
| 6213246 | Electrically actuated vehicle steering system In a steering system for a motor vehicle, the steered vehicle wheels, during normal operation, are coupled with a steering handle only through an electronic regulating system that constantly checks for correct function. The regulating system controls an a... | 04/10/2001 |
| 6209677 | Steering system for non-tracked motor vehicles A steering system of a non-tracked motor vehicle whose steered vehicle wheels are connected in the normal operation with respect to the effect with a steering handle only by way of an electronic automatic control unit which continuously monitors itself wi... | 04/03/2001 |
