| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 180600240 | Combined with manual steering | 20 |
| 20080202827 | Motorcycle steering - A steering mechanism for a wheel of a vehicle defining a wheel centerline comprises a four-bar linkage. The four-bar linkage includes a ground link, a coupler link and a spaced pair of follower links. The ground link is connected to the vehicle. The coupler link is connected to the wheel and is located aft of the ground link. The follower links pivotally interconnect the ground link to the coupler link. Each of the follower links defines a link axis. The follower links extend aftwardly from the ground link at diverging angles such that the link axes intersect one another at a steering axis which is positioned forward of the wheel centerline. The steering mechanism may be fitted to a motorcycle having front and rear wheels wherein the four-bar linkage is housed within a wheel hub of the front wheel. | 08-28-2008 |
| 20090188728 | Apparatuses and Methods for Providing Hybrid Steering for a Vehicle - Steering control apparatuses and methods for a vehicle are provided. A steering control apparatus can include a steering shaft drivingly linked to a pair of front wheels of a vehicle. A movable steering handle can also be provided and disposed about the steering shaft, with the steering handle being capable of selectively turning the pair of front wheels to direct the movement of the vehicle. A first and second brake clutch mechanism for engaging and disengaging first and second drive wheels, respectively, can be provided. First and second brake clutch control levers can selectively control the first and second brake clutch mechanism, respectively, to engage and disengage the first and second drive wheels. The steering handle can include a coupling base. The coupling base can engage the steering shaft to permit decoupling of the steering handle from the steering shaft allowing the steering shaft and the linked pair of front wheels to turn free of the steering handle while the steering handle is still disposed about the steering shaft. | 07-30-2009 |
| 20100012397 | STEERING SYSTEM FOR AN ADAPTABLE VEHICLE - The powered hybrid vehicle is capable of being operative in either one of first and second distinct driving modes each comprising corresponding first and second directional systems. The hybrid vehicle has a control shaft operatively coupled to a steering device, a first steering member operatively coupled to the first directional system, a second steering member operatively coupled to the second directional system and a shaft coupler capable of selectively coupling the control shaft to either one of the first and second steering members. The hybrid vehicle may be steered by controlling the steering device notwithstanding which one of the first and second driving mode it is in. | 01-21-2010 |
| 20100065346 | STEERING MECHANISM, PARTICULARLY FOR SHORT VEHICLES - Steering mechanism for orienting the steered wheels ( | 03-18-2010 |
| 20100200311 | Manually operatable motorized wheel chair - A motorized wheel chair includes two drive wheels rotatably attached to a frame with wheel axles, and a push rim attached to each drive wheel for being operated by the user to rotate the drive wheels, a motor driving device includes a gear secured to the wheel axle of the drive wheel, a motor attached to the drive wheel and engaged with the gear for driving the drive wheel, and an encoder attached to the drive wheel and engaged with the gear for detecting the rotating of the drive wheel, and a control device includes a processor device coupled to the motor and the encoder for receiving a signal from the encoder and for controlling the motor to operate the drive wheel. | 08-12-2010 |
| 20100206647 | RIDING WORK VEHICLE - A riding work vehicle includes right and left wheels, at least one caster wheel, and a working machine. The lawnmower vehicle further includes traveling motor, steering motor, a traveling system clutch, and a steering system clutch. The traveling system clutch is configured to disable transmission of the rotational force from an axle of the caster wheel to the traveling motor in a state where the traveling motor is deactivated. The steering system clutch is configured to disable transmission of the rotational force from a steering shaft for the caster wheel to the steering motor in a state where the steering motor is deactivated. | 08-19-2010 |
| 20100307842 | Chassis Mounted Electric, Independent, Steering Axle of a Vehicle - A chassis frame ( | 12-09-2010 |
| 20110127093 | RIDING-TYPE GROUND WORKING VEHICLE - A riding-type ground working vehicle includes left and right wheels, a command value calculating section, a yaw rate detecting section that detects a yaw rate of the vehicle, a target yaw rate calculating section, a correction coefficient acquiring section, and a control section. The left and right wheels are independently driven to travel by two respective traction motors. The command value calculating section calculates target rotational speed command values for the two traction motors based on an acceleration instruction and a turn instruction input by a driver. The target yaw rate calculating section calculates a target yaw rate based on the acceleration instruction and the turn instruction. The correction coefficient acquiring section acquires two correction coefficients respectively relating to the two traction motors based on a deviation between the target yaw rate and a yaw rate detection value. The control section corrects the two target rotational speed command values by the two correction coefficients, and controls drive of the two traction motors based on the corrected two target rotational speed command values. | 06-02-2011 |
| 20130075169 | Swather Tractor with Rear Wheel Active Steering - A swather tractor has a pair of driven ground wheels at one end where a header is supported and a pair of steerable wheels at the other end for supporting the tractor. The driven ground wheels are hydraulically driven so that an operator controlled steering control is arranged to control a differential in rate of supply of hydraulic fluid to control a relative speed of rotation of the driven wheels and thus a turning direction of the tractor. The steerable wheels have a steering system that is operable in response to the steering control to positively steer the steerable wheels and there is provided an arrangement to deactivate the steering system at large turns so that the steerable wheels are free to castor. | 03-28-2013 |
| 20140174838 | Front-Mounted Stand-On Lawn Care Vehicle - A riding lawn care vehicle may include a frame, an engine, a steering assembly, a support platform and a front mount assembly. The frame may be attachable to a pair of front wheels and a rear wheel assembly of the riding lawn care vehicle. At least a portion of the engine may be mounted to the frame substantially between the front wheels. The steering assembly may include steering levers operably coupled to respective ones of the front wheels of the riding lawn care vehicle via respective hydrostatic drive pumps driven by the engine. The steering assembly may enable steering of the riding lawn care vehicle based on drive speed control of the front wheels responsive to positioning of steering levers of the steering assembly. | 06-26-2014 |
| 20140305715 | AUTOMOBILE - Having three or more vehicle wheels ( | 10-16-2014 |
| 180600260 | Interlocked | 9 |
| 180600280 | Electrical | 3 |
| 20130056287 | THREE-WHEELED ELECTRIC VEHICLE - Provided is a three-wheeled electric vehicle. The three-wheeled electric vehicle includes: a front left wheel disposed on a front left portion of the three-wheeled electric vehicle; a front right wheel disposed on a front right portion of the three-wheeled electric vehicle; a rear wheel disposed on a rear center portion of the three-wheeled electric vehicle; a first driving motor configured to transfer a driving power to the front left wheel; a second driving motor configured to transfer a driving power to the front right wheel; and a steering motor configured to transfer a steering power to the rear wheel. | 03-07-2013 |
| 20130098695 | ELECTRIC VEHICLE - An electric vehicle which includes in-wheel motor driving devices and an independent-steering apparatus and is capable of making pivot turns within a minimum-required parking space, having a structure without a chassis and a part of the body protruding out of a minimum-required circular space necessary for the wheels to make pivot turning. In a case where the electric vehicle has four wheels including left and right front wheels and left and right rear wheels, an in-wheel motor driving device is incorporated only in the left and right front wheels, only in the left and right rear wheels, or in all of the wheels. An independent-steering apparatus serves for all of the wheels. A kingpin axis in each of the wheels makes an intersection with a road surface on a circle inboard of a vehicle chassis. | 04-25-2013 |
| 20150096814 | CONTROL SYSTEM FOR FOUR-WHEEL-DRIVE VEHICLE - A control system includes a transfer. The transfer is disposed in a power transmission path between the driving power source and primary driving wheels and distributes dynamic power of the driving power source to the secondary drive wheels. A driving power transmission shaft transmits the dynamic power of the driving power source distributed by the transfer to the secondary drive wheels. A clutch mechanism is disposed in a power transmission path between the transfer and the driving power transmission shaft. A electronic control unit engages at least one of a first and second clutches and then engages the clutch mechanism on the basis of a steering state at the time of switching from a two-wheel-drive traveling state in which the clutch mechanism and the first and second clutches are disengaged to a four-wheel-drive traveling state in which the clutch mechanism and the first and second clutches are engaged. | 04-09-2015 |
| 180600300 | Fluid | 2 |
| 20090127007 | Compact Crawler Type Tractor - A compact crawler type tractor having an excellent turning feeling is provided. A hydraulic speed change mechanism for turning includes a hydrostatic transmission pump for turning and a hydrostatic transmission motor for turning, and is characterized in that the hydrostatic transmission pump for turning is a variable displacement pump, and an output of the hydrostatic transmission motor for turning is input into a differential mechanism. By combining the hydrostatic transmission pump for turning and the hydrostatic transmission motor for turning and the differential mechanism, an excellent turning feeling can be obtained. | 05-21-2009 |
| 20140138165 | STEERING CONTROL SYSTEM FOR HYDROSTATICALLY DRIVEN FRONT VEHICLE GROUND WHEELS AND STEERABLE REAR CASTER WHEELS - An integrated steering control system includes a primary, automatic and rear control valves. A steering wheel operates the primary steering control valve and is of a type which includes a leakage characteristic. Steering wheel movement is sensed and a signal is sent which results in the automatic steering control valve being operated for adding fluid that supplied to a steering cylinder by the primary steering control valve in order to compensate for leakage, the amount of added fluid being a function of vehicle ground speed. An electric actuator with position feedback is used for ground speed control. Whenever the actuator position shows that the ground speed is set to zero and a switch in the hydro-handle slot shows that the handle is in the Park position, the automatic steering control valve is activated to move the steering cylinder to a neutral, straight ahead position, as determined by a sensor in a mechanical linkage of the steering control. | 05-22-2014 |
| 180600320 | Lever and/or linkage | 4 |
| 20090250270 | Steering and Driving Systems and Related Vehicles - A ZTR vehicle includes true or proper ZTR steering in the forward and reverse directions. The vehicle has independently driven locomotive drives that drive the wheels to provide mobility and steering to the vehicle. A steering wheel is included that pivots one of two steering input members that rotate to independently shift the drive units. A speed and direction pedal is also included, which is communicated to provide direction and magnitude input to the drive units. The steering input and speed and direction inputs coordinate propelling the vehicle such the vehicle turns in the same direction when traveling forward as well as in reverse. | 10-08-2009 |
| 20120298429 | Driving and Steering of Motor Vehicles - An arrangement and a method are disclosed for driving and steering an engine driven vehicle of the type m which left and right hand wheels | 11-29-2012 |
| 20150353131 | Arrangements for Driving and Steering Of Motor Vehicles - A transmission arrangement for an engine driven vehicle having two continuously variable transmissions serving to drive left and right hand vehicle wheels at separately variable drive ratios. Each transmission incorporates a variator of the type in which a net torque applied to the variator through its input and output is referred to a ratio control part, which may be formed as a control lever, whose position governs the transmission's drive ratio. The control parts of the variators are each operatively coupled to a driver's speed control, such that the speed control determines a mean position of the two control parts. However they are both also able to move relative to the mean position, under the influence of the torque they react. Additionally the control parts are coupled to each other such that any displacement of one control part from the mean position is accompanied by an opposite displacement of the other control part. In this way the transmissions are enabled to the relative speeds of the driven vehicle wheels automatically to reduce or even eliminate wheel slip, whilst still providing the driver with control over overall vehicle speed. | 12-10-2015 |
| 180600380 | Geared | 1 |
| 20080202828 | GROUND WHEEL DRIVE SYSTEM FOR AN AGRICULTURAL IMPLEMENT - An implement drive arrangement for a wheel axle assembly pivotally connected to a housing. A drive element is supported on the axle for rotation with the wheel generally about the wheel axis. The housing rotatably supports a driven element for rotation about an axis generally fixed in relation to the housing. A free-floating connecting element is rotatably supported between the drive element and the driven element to facilitate relatively unimpeded pivoting of the axle and wheel relative to the housing. The connecting element has two degrees of freedom offset at 90° to one another and aligned radially relative to the axis of rotation to accommodate axle pivoting while assuring smooth transfer of power from the wheel to the driven element as the angular relationship changes between the axle and housing with movement of the wheel over irregular ground surfaces. | 08-28-2008 |
