With Means For Steering All Driven Wheels Patents (Class 180/234)
  • Patent number: 11840119
    Abstract: A movable object such as a mobile robot is designed to be driven indoors or outdoors with improved stability. Stability is enhanced by an attitude control mechanism to improve attitude stability of the movable object in a direction perpendicular to a driving direction thereof. The movable object includes an attitude control motor including a connecting shaft having a first end connected to a body part and a second end connected to a wheel, wherein the second end of the connecting shaft is located higher or lower than the first end of the connecting shaft.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: December 12, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hun Keon Ko, Geun Sang Yu, Joo Young Chun, Eun Ho Seo
  • Patent number: 11805717
    Abstract: A self-propelled machine for agriculture forms an agricultural gantry system. The machine has a support structure for receiving attachment devices, at least one drive unit with a control module, a support structure forming an agricultural gantry system and a plurality of ground supports for moving the support structure. The agricultural gantry system is convertible from a road orientation defining a driving width (FB) to a working orientation having a substantially larger working width (AB).
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 7, 2023
    Assignee: Kalverkamp Innovation GmbH
    Inventors: Felix Kalverkamp, Klemens Kalverkamp
  • Patent number: 11700782
    Abstract: According to the disclosure a drive shaft connecting unit is provided. This comprises a vehicle-side drive shaft connecting device according to the disclosure and an accessory-side drive shaft connecting device according to the disclosure which can be releasably and interlockingly connected thereto and coupled therewith.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: July 18, 2023
    Assignee: SYN TRAC GMBH
    Inventor: Stefan Putz
  • Patent number: 11655128
    Abstract: A device includes a bevel pinion meshed to a bevel ring in rigid fixation with a pinion gear engaged with a slew ring to control rotation of the slew ring. A rotation sensor provides an electrical output corresponding to a rotational position of an input gear of the rotation sensor. A reduction gearing system interposes the bevel ring and the input gear of the rotation sensor. The gearing reduction system provides a reduction ratio enabling the rotation sensor to determine rotational position of the slew ring.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: May 23, 2023
    Assignee: Tulsa Winch, Inc.
    Inventors: Darren Scott Barnes, David M. Berezowski, Michael J. Martell, Haroon A. Khan
  • Patent number: 11597451
    Abstract: In accordance with the disclosure provision is made for a vehicle. The vehicle is characterized in that a vehicle chassis of this vehicle includes a roughly tubular frame, a gearbox housing and underbody paneling. The frame, the gearbox housing and the underbody paneling are connected in such a manner that they form the vehicle chassis and hence a load-bearing frame for engine, bodywork and/or payload.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 7, 2023
    Assignee: SYN TRAC GMBH
    Inventor: Stefan Putz
  • Patent number: 11565830
    Abstract: A method for calculating an optimal wheel position control angle of passenger boarding bridge automatic docking system includes collecting ranging information of a sensor to rotate the bridgehead direction via a distance measuring sensor on both sides of the bridgehead of the passenger boarding bridge, making the bridgehead parallel to the aircraft fuselage; collecting information of an aircraft door by a camera at the bridge head of the passenger boarding bridge to obtain a center position D of the aircraft door; in an ideal docking situation, the aircraft door should appear at the bridge head position as D?; the position where D? is projected vertically onto the aircraft fuselage is D?, that is, the line segment DD? is the horizontal distance deviation between the current passenger boarding bridge and the aircraft door, the line segment D?D? is the distance between the current boarding bridge and the aircraft fuselage.
    Type: Grant
    Filed: February 7, 2021
    Date of Patent: January 31, 2023
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Run Ye, Bin Yan, Cheng Zhang, Xuemei He, Xiaojia Zhou
  • Patent number: 11207977
    Abstract: An axle drive apparatus of the present invention includes an adapter unit that has an adapter case connectable to an axle drive case while supporting a first motor, an adapter input member connected to an output shaft of the first motor by connection of the first motor to the adapter case, an adapter output member that is connected to an axle drive input member of the axle drive apparatus by connection of the adapter case to an axle drive case, and an adapter power transmission mechanism that operatively transmits the rotational power of the adapter input member to the adapter output member. The axle drive apparatus is connectable to a vehicle frame through an axle drive case side frame connecting part and an adapter case side frame connecting part respectively provided at the axle drive case and the adapter case.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: December 28, 2021
    Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventors: Hiroshi Sugimoto, Akihiro Ima, Toshifumi Yasuda
  • Patent number: 11208149
    Abstract: A reinforcing element (10) for a motor vehicle body (1) comprising protection means (30, 31, 40, 41, 42) for protection against an impact at the rear of the vehicle, characterised in that it comprises at least two tubes (20, 22) to be positioned, generally, in the length direction of the vehicle, and a rigid contact surface (30, 31, 70) turned towards the rear, the rigid contact surface (30, 31, 70) and the two tubes (20, 22) being arranged with respect to each other in order to allow the vehicle to move in case of an impact at the rear.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 28, 2021
    Assignee: PSA AUTOMOBILES SA
    Inventors: Marc Peru, Richard Zeitouni
  • Patent number: 11006568
    Abstract: The present invention discloses a mobile operating platform for a paddy field, including a body, a power generating device, a movement control system, a draft control system and an automatic leveling system, where the power generating device, the movement control system, the draft control system and the automatic leveling system are all mounted on the body. The present invention has a compact overall structure, and utilizes the pressure of a water flow to realize the movement of the platform, and can fully utilize the characteristics of the water flow to reduce power consumption, and avoid the use of a heavy and complicated traditional walking device, the entire mobile operating platform for a paddy field does not contact the ground, saving mechanical power and avoiding damage to an aquatic crop; the draft control system adjusts a draft by the amount of water filled in a closed cavity in the body.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 18, 2021
    Assignees: SHANDONG UNIVERSITY OF TECHNOLOGY, NANJING RESEARCH INSTITUTE FOR AGRICULTURAL MECHANIZATION, MINISTRY OF AGRICULTURE
    Inventors: Xiang Yin, Juan Du, Mingqun Yu, Ting'en Wang, Chengqian Jin, Duanyang Geng
  • Patent number: 10953714
    Abstract: It is provided a multiple track and multiple axle motor vehicle, having at least two front wheels, at least two rear wheels, and a steering apparatus which is configured for steering the front and rear wheels of the motor vehicle. The at least two front wheels can be pivoted in each case about a front wheel steering rotational axis by means of the steering apparatus, the front wheel steering rotational axes being oriented in each case in such a way that a negative caster is produced in relation to the respective front wheel, and the at least two rear wheels can be pivoted in each case about a rear wheel steering rotational axis by means of the steering apparatus, the rear wheel steering rotational axes being oriented in each case in such a way that a positive caster is produced in relation to the respective rear wheel.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: March 23, 2021
    Inventor: Hans-Juergen Schulze
  • Patent number: 10836426
    Abstract: A small radius- or zero radius-turn vehicle that may be steered by differentially-driven rear drive wheels and by at least one electronically-controlled, steerable front wheel. A device, e.g., one or more levers, may be provided that controls both speed and direction of the drive wheels. A sensor may be provided that detects a position of the lever(s). A controller may calculate a steering angle of the front wheel based upon the position, and issue a command to an actuator associated with the front wheel. The actuator may rotate the front wheel to an electronically calculated steering angle in response to the command.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: November 17, 2020
    Assignee: Exmark Manufacturing Company, Incorporated
    Inventors: Garry W. Busboom, Christian S. C. Bryant, Sang Pheng, James R. Gaebel
  • Patent number: 10710635
    Abstract: A frame structure for an all-terrain vehicle includes upper main frame members and lower main frame members, each upper and lower main frame member extended in a longitudinal direction of the frame structure. The lower main frame members have forward and rearward portions mounted to the upper main frame members and central portions extended in a lateral direction of the frame structure outward of the upper main frame members. First sub-frame members are mounted to the forward and rearward portions of the lower main frame members. The first sub-frame members separate a component space defined by the frame structure into an upper component space and a lower component space. An electric motor is located in the lower component space, and a battery pack is located in the upper component space.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 14, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Richard M. Lowery, Jr., Justin M. Winter
  • Patent number: 10604182
    Abstract: The present invention provides a rear-wheel steering control technique. Specifically, a rear-wheel steering control apparatus for controlling rear-wheel steering control, according to an aspect of the present invention, may include: a vehicle data collection unit configured to receive vehicle data including at least one of steering angle data, steering torque data, vehicle speed data, yaw rate data, or lateral acceleration data; a vehicle data determination unit configured to determine whether or not the steering angle data included in the vehicle data is normal; and a rear-wheel steering control unit configured to generate a rear-wheel steering control signal for degradation rear-wheel control based on at least one of the steering torque data, the vehicle speed data, the yaw rate data, or the lateral acceleration data when the steering angle data is determined to be abnormal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 31, 2020
    Assignee: MANDO CORPORATION
    Inventor: Sang Mook Kim
  • Patent number: 10464600
    Abstract: Electronically controlled hydraulic valves can be directly mounted to rear steering cylinders of a four wheel steering machine to improve steering, reduce space consumption, reduce leak points and allow ease of routing. The valves can receive hydraulic fluid from a pump and release hydraulic fluid to tank, while controlling an amount of hydraulic fluid to the steering cylinder via inlets and outlets in direct contact. The valves can be controlled by a controller that is also in communication with position sensors configured to sense positions of the front and rear steering cylinders, so that the directly mounted valves in the rear can be correspondingly controlled to follow steering in the front.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: November 5, 2019
    Assignee: CNH Industrial America LLC
    Inventors: Kerry J. Treinen, Blaine A. Schwalbe, Nathan P. Brooks, Roy A. Bittner, Steven N. Winkel
  • Patent number: 10358023
    Abstract: A transport vehicle for containers, in particular a floor-bound and driverless heavy-load transport vehicle for ISO containers, has a platform for receiving at least one container to be transported, with the platform being delimited by guide elements for guiding a container when being deposited on the platform, and includes a drive unit and a battery module for supplying electric energy to the drive unit. The battery module has a support frame and a battery, with there being at least one air conditioner device arranged in the support frame together with the battery.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 23, 2019
    Assignee: Konecranes Global Corporation
    Inventors: Mike Hegewald, Jannis Moutsokapas, Peter Köhn
  • Patent number: 10358163
    Abstract: An electric power steering apparatus that has a function to switch an assist mode and an automatic mode, and comprises a handle vibration removing section to cut off frequency components near a predetermined central frequency with reference to a target steering angle, a position control section to output a motor angular velocity command value, an integration section to integrate a deviation between the motor angular velocity command value and a motor angular velocity, a proportion section to input the motor angular velocity, and a velocity control section to output the motor current command value by subtracting an output of the proportion section from an output of the integration section, thereby to remove the vibration being caused by spring characteristics of a torsion bar and inertia moment of a steering wheel in the automatic mode.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: July 23, 2019
    Assignee: NSK LTD.
    Inventor: Takahiro Tsubaki
  • Patent number: 10029565
    Abstract: A vehicle is provided with a first transmission linked to separate first and second pivotable knuckle assemblies. The first and second pivotable knuckle assemblies can be independently steered and include axles driven by the transmission. Each axle drives a wheel of the vehicle. The vehicle includes separate third and fourth pivotable knuckle assemblies. The third and fourth pivotable knuckle assemblies can be independently steered and include axles.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 24, 2018
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Scott W. Keller
  • Patent number: 9946255
    Abstract: A remote control for a parking assistance system for automated parking of a passenger motor vehicle is provided. The parking assistance system has an environment sensor system that supplies sensor information, and an obstacle detection device for detecting the presence of an obstacle based on the sensor information. In addition, the parking assistance system has a bidirectional wireless communication device that transmits obstacle detection information about the presence of an obstacle to the remote control. The remote control also has a bidirectional wireless communication device for communication with the passenger motor vehicle. In addition, the remote control has one or more parking function operating elements for controlling the parking and/or unparking. The bidirectional communication device of the remote control receives the obstacle detection information. In addition, the remote control has signaling means for signaling the presence of an obstacle to the operator of the remote control.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: April 17, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Patrick Matters, Marina Trpinac, Bernd Bader
  • Patent number: 9216648
    Abstract: Provided is a wheel driving device which drives a wheel by output rotation of a reduction device disposed on an inside in a radial direction of the wheel. The reduction device includes an output member connected to the wheel, and a pair of bearings supporting the output member. In the pair of bearings, the bearing on a side opposite to a vehicle body has a smaller outer diameter than that of the bearing on a vehicle body side. An injection passage member of a medium injected into the wheel may be disposed on an outside in a diameter direction of the bearing on the side opposite to the vehicle body.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: December 22, 2015
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Masayuki Ishizuka
  • Patent number: 9108518
    Abstract: A system and method is disclosed for controlling at least one traction motor driving an axle on a vehicle. The vehicle includes a plurality of axles on which wheels are mounted. The method may include determining whether at least one of the wheels on at least one of the axles differs in diameter from at least one other wheel on a different one of the axles by more than a threshold value. The method may also include increasing a torque provided by a traction motor driving an axle with at least one wheel that has a larger diameter than at least one other wheel on a different axle.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: August 18, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventor: John Ernst Nielsen Madsen
  • Patent number: 8727059
    Abstract: The invention relates to a hinge assembly for connecting two vehicle parts to a vehicle that is capable of crab steering, has articulated frame steering and comprises articulating vehicle axles. Four structural elements are connected to each other by four hinge connections, the hinge centers being arranged in a common plane in a basic state, such that they form a frame which is substantially rigid with respect to thrust forces in that plane. Two of the structural elements forming opposite sides of the frame can in each case be rotated about a rotational axis located in said plane with respect to the other three structural elements. Furthermore, the hinge connections are designed in such a manner that, starting from the basic state, the two rotational axes can be articulated relative to each other in that one of the rotational axis can be pivoted out of the plane.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: May 20, 2014
    Assignee: Ammann Schweiz AG
    Inventors: Christoph Anliker, Lino Giovanoli
  • Patent number: 8701801
    Abstract: 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.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: April 22, 2014
    Assignee: NTN Corporation
    Inventors: Chinami Itou, Yoshinori Itakura, Minoru Suzuki, Hiromichi Bando
  • Patent number: 8689914
    Abstract: An omni-directional wheel assembly for a vehicle that includes a wheel, at least one lower suspension link and an upper attachment joint. Both the at least one lower suspension link and the upper attachment joint are attachable to the vehicle. The wheel is able to rotate at 360°, to steer the vehicle, around a pivot line positioned by the at least one lower suspension link and the upper attachment joint once attached to the vehicle. A projection of the pivot line onto a vertical projection plane comprises a vertical axis passing through a contact point between the wheel and ground defining a caster angle with the vertical axis, where whatever the orientation of the projection plane, the omni-directional wheel assembly includes an adjustment means able to adjust the caster angle within a predetermined range.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: April 8, 2014
    Inventors: John Victor Gano, Enrique Hector Scalabroni
  • Patent number: 8579065
    Abstract: A mower having a cutting deck for cutting grass has four drive wheels arranged in a square or rectangular configuration on the mower's frame. Four wheel drive and four wheel steering are employed with the drive wheels. The four wheel drive is provided by a hydraulic drive system that employs a pair of identical serial circuits which have their own pumps with each pump serially sending its output through a rear drive motor and a front drive motor that are catty-corner to one another on the frame, i.e. are on opposite sides of the motor. Various flow crossover paths and flow recirculation paths are provided in the serial circuits to ensure the drive motors receive adequate flow in maximum turns of the mower. The flow recirculation paths around a pair of drive motors at one end of the frame are shut off during reverse and during braking so that all drive motors retain hydraulic braking in these conditions.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: November 12, 2013
    Assignee: The Toro Company
    Inventors: Rex R. Bergsten, David H. Torborg, John B. Heckel
  • Patent number: 8554411
    Abstract: In an electric power steering system, an ECU 11 includes two independent microcomputers 17a, 17b that serve as motor control signal generators, and the microcomputers 17a, 17b perform the same current feedback computation. Switching arms 20a, 20b that constitute a driving circuit 18 operate independently of each other, based on motor control signals generated by the corresponding microcomputers 17a, 17b. Each of the microcomputers 17a, 17b determines whether an absolute value of a current deviation of an actual current I (I1, I2) from a current command value exceeds a predetermined threshold value. If the current deviation exceeds the threshold value, it is determined that an abnormality occurs in the system.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: October 8, 2013
    Assignee: Jtekt Corporation
    Inventor: Noritake Ura
  • Patent number: 8504243
    Abstract: An electronic control unit determines that a vehicle is traveling in a straight line if a state in which the steering torque is less than a predetermined steering torque and an amount of change in the steering angle is less than a predetermined steering angle continues for a predetermined period of time when the vehicle speed is greater than a predetermined vehicle speed. Also, if the steering angle of the steering wheel is not 0, while the vehicle is traveling in a straight line, the electronic control unit calculates the steering amount of rear wheels that matches the steering amount of front wheels, using the steering angle of the steering wheel. Then the electronic control unit steers the rear wheels by driving an electric motor until a controlled neutral steering position of the rear wheels that corresponds to the steering amount matches an absolute neutral steering position.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: August 6, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiromitsu Kageyama
  • Patent number: 8387997
    Abstract: In a steering arrangement for vehicles, in particular underground transport vehicles, including at least four steerable wheels (2), wherein, during cornering, a respective curve-inner wheel is turned more sharply than the respective curve-outer wheel, at least two wheels (2) located opposite each other in respect to the longitudinal center plane of the vehicle are coupled with each other via angle levers (21) and a tie rod (22) connected to the angle levers (21). Curve-inner or curve-outer wheels consecutively arranged in the longitudinal direction of the vehicle are coupled to common pivotal movement via a gear. The angle levers (21), via a coupling rod (24), are each connected with a steering lever (13) each connected with a steerable wheel (2) via a steering rod (10).
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: March 5, 2013
    Assignee: Sandvik Mining and Construction GmbH
    Inventors: Eduard Krivec, Thomas Gross
  • Patent number: 8392068
    Abstract: A vehicle behavior control device (S) determines, by using a vehicle velocity (V), a transmission function (K(s)) which is determined based on a specification of the vehicle, receives as an input a wheel turning speed (?) obtained by differentiating a wheel turning angle (?) of left and right front wheels (FW1, FW2) with respect to time, and outputs a target yaw moment (My). The device (S) also calculates, by using the determined target yaw moment (My), a left-wheel-side forward/backward force (FxCL) imparted to a left wheel side (left front wheel FW1 and left rear wheel RW1) of a vehicle (10) and a right-wheel-side forward/backward force (FxCR) imparted to a right wheel side (right front wheel FW2 and right rear wheel RW2) of the vehicle (10).
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ippei Yamazaki
  • Patent number: 8348002
    Abstract: A drive and steering unit for driving and steering a load support comprises a steering assembly, a slewing ring engaged with the steering assembly and being rotatable about an axis in response to actuation of the steering assembly, a drive assembly mounted to the slewing ring, and a drive power system coupled to the drive assembly and movable with the slewing ring.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: January 8, 2013
    Assignee: Boomerang Systems, Inc.
    Inventors: Stanley Checketts, Mike Winger, Ryan Burleson, Merin Swasey
  • Patent number: 8296016
    Abstract: The method consists of, when the instantaneous speed of the vehicle is greater than a pre-determined threshold: identifying that the vehicle travels in a straight line without torque exerted on the steering wheel; if the prior condition is met, determining an average residual torque for the steering wheel by calculating a sliding scale of measures of torque on the steering wheel; calculating a correction, if the average residual torque on the steering wheel is greater than a pre-determined minimum torque, which is proportional to the average residual torque to be applied to the torque measures on the steering wheel; calculating effective correction limited in terms of the speed of variation and amplitude in relation to the correction applied to the measures of torque on the steering wheel, said corrected measures being subsequently treated by the electronic calculator in order to control the electronic booster motor.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: October 23, 2012
    Assignee: Koyo Steering Europe (K.S.E.)
    Inventors: Jean-Marc Kasbarian, Christophe Ravier
  • Patent number: 8265828
    Abstract: The control apparatus for an electric power steering system is designed to satisfy the first spec that a first relation characteristic between speed of the electric motor to generate steering assist force and the steering wheel torque is the same as a basic relation characteristic in which the electric motor is driven in accordance with a basic assist amount calculated on the basis of the measured steering torque not corrected by an assist compensation amount calculated depending on the operating state of the electric power steering system, and to satisfy the second spec that a second relation characteristic between speed of the electric motor and a road surface reaction force is such that speed of the electric motor is suppressed compared to a case where the electric motor is driven in accordance with the basic relation characteristic.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: September 11, 2012
    Assignee: DENSO CORPORATION
    Inventors: Daiji Watanabe, Motoaki Kataoka, Tomoyuki Hori
  • Patent number: 8099211
    Abstract: A microcomputer is provided with an extracting section capable of extracting a specific frequency component from an input signal. The extracting section extracts, from a pinion angle corresponding to a signal indicating a state of the steering system, a frequency component corresponding to a vibration of a steering system caused by stress applied to steerable wheels. The extracting section outputs an effective value of the extracted frequency component as a power spectrum to a second computing section. In the case that the power spectrum output from the extracting section is equal to or more than a predetermined threshold value, the microcomputer enhances a torque inertia compensation control so as to suppress vibration of the steering system caused by the stress. In other words, the microcomputer increases a torque inertia compensation amount corresponding to a compensation component based on a steering torque differential value.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: January 17, 2012
    Assignee: Jtekt Corporation
    Inventors: Akihiko Nishimura, Hirozumi Eki
  • Patent number: 8042629
    Abstract: A snow traction unit to replace a wheel of an all wheel drive vehicle which includes a frame supporting two carrier wheels; said carrier wheels being spaced apart a distance greater than their combined radii; an endless snow contacting track mounted for rotation on said carrier wheels; a track contacting surface provided between the lower extremities of said carrier wheels; a drive engagement means for engaging the drive shaft of the vehicle and for driving at least one of said carrier wheels; the arrangement of the width of the track, the spacing between the carrier wheels and the track contacting surface resulting in the vehicle having a force imprint less than 250 Kg/square meter.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: October 25, 2011
    Inventor: Roderick Mackenzie
  • Publication number: 20110083922
    Abstract: A ground engaged vehicle includes a front portion and a rear portion joined by an articulation. The articulation rotates around a longitudinal axis. An engine drives a hydrostatic pump which drives four hydrostatic motors, each of the hydrostatic motors in operative engagement with one of four wheels. The wheels are on wheel mounts, each of the wheel mounts having a vertical axis around which one of the four wheels with one of the hydrostatic motors is turnable. A steering system turns the two wheels of the front portion in a first direction and the two wheels of the rear portion in an opposite direction. The steering system is powered by the hydrostatic pump. A pedal control system has a first pedal controlling driving the vehicle in a forward direction and a second pedal controlling driving the vehicle in a rearward direction.
    Type: Application
    Filed: September 8, 2010
    Publication date: April 14, 2011
    Applicant: COOT2, INC.
    Inventors: Dave Donaldson, John LaReau
  • Patent number: 7900735
    Abstract: A hydrostatic transaxle comprises: a motor casing; at least one hydraulic motor disposed in the motor casing; at least one output shaft disposed in the motor casing so as to be driven by the at least one hydraulic motor; and a pair of steerable wheel support units attached onto respective opposite ends of the motor casing. Each of the steerable wheel support units includes an axle, a steerable casing, a wheel, and a steering arm. In each of the steerable wheel support units, the axle is drivingly connected to the at least one output shaft, the steerable casing is substantially horizontally rotatable relative to the motor casing, the wheel is attached on an outer end of the axle outside of the steerable casing, and the steering arm is rotatably integrally provided on the steerable casing.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: March 8, 2011
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Koji Iwaki, Norihiro Ishii, Fumitoshi Ishino
  • Patent number: 7823673
    Abstract: A variable wheel positioning vehicle has a wheel position changing mechanism and a wheel position control device to change a wheel position of a wheel with respect to a center of gravity of a vehicle body. The wheel position changing mechanism is arranged to move a suspension device along a movement path with respect to the vehicle body and to hold the suspension device at any position along the movement path. The wheel position control device issues a movement command to the wheel position changing mechanism that changes a wheel positioning distance between a center rotation axis of one of the wheels and the center of gravity of the vehicle body as measured in a direction parallel to an acceleration direction of the center of gravity of the vehicle body based on a traveling condition the vehicle.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: November 2, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Katsunori Asogawa
  • Patent number: 7801657
    Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: September 21, 2010
    Assignee: Eaton Corporation
    Inventors: Damrongrit Piyabongkarn, Jae Y. Lew, John A. Grogg, Robert J. Kyle
  • Patent number: 7665748
    Abstract: A driving form switching apparatus enabling even a user of wheelchair who cannot freely use limb to easily change over a driving form by single hand self-operation. By using a differential gear mechanism or a combination mechanism comprising pinions and racks, the rotating, tilting and shifting motions of a steering lever are transmitted to two rotating shafts. Drums are directly coupled to the two rotating shafts, and the rotations of the two rotating shafts are transmitted to steering shafts through flexible wires as first connecting means. Also, the steering shafts for wheels are parallel- or cross-connected by second connecting means. Thus, the driving forms of a four-wheel drive vehicle such as back and forth traveling, counter-clockwise turning, clockwise turning, turning on the spot, parallel traveling, stopping and braking, etc, can be switched by a single-hand simple operation.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: February 23, 2010
    Assignee: Niigata University
    Inventor: Tokuji Okada
  • Publication number: 20090229488
    Abstract: Embodiments of the pivot wheel assembly include a motor and a wheel. For example, a pallet may include a pivot wheel assembly at each corner, and each wheel is driven by its own motor. The pivot wheel assembly pivots and locks in the two 90 degree positions used for X and Y travel of the pallet. In some embodiments, each wheel assembly can be positioned in various positions in addition to the 90 degree positions. For example, the four wheel assemblies can be positioned to allow the entire pallet to rotate about its own center.
    Type: Application
    Filed: November 13, 2008
    Publication date: September 17, 2009
    Inventor: Glen Ward
  • Patent number: 7574294
    Abstract: A control apparatus of an electric power steering apparatus is provided in which a nonlinear element of a motor model of-the electric power steering apparatus is compensated beforehand to linearize the motor model and the back electromotive force of the motor is computed to compensate the back electromotive force for a control loop, and conduct back electromotive force compensation with no lag in order to realize a control apparatus of an electric power steering apparatus with less control error, stable controllability, small motor output torque ripple, good wheel steering feeling, and less motor noise.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: August 11, 2009
    Assignees: NSK Ltd., NSK Steering Systems Co., Ltd.
    Inventors: CaoMinh Ta, ChunHao Jiang, Shuji Endo
  • Patent number: 7499780
    Abstract: A control apparatus of an electric power steering apparatus is provided in which a nonlinear element of a motor model of-the electric power steering apparatus is compensated beforehand to linearize the motor model and the back electromotive force of the motor is computed to compensate the back electromotive force for a control loop, and conduct back electromotive force compensation with no lag in order to realize a control apparatus of an electric power steering apparatus with less control error, stable controllability, small motor output torque ripple, good wheel steering feeling, and less motor noise.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: March 3, 2009
    Assignees: NSK Ltd., NSK Steering Systems Co., Ltd.
    Inventors: CaoMinh Ta, ChunHao Jiang, Shuji Endo
  • Patent number: 7490694
    Abstract: Some embodiments of the invention include a vehicle having a chassis and an engine supported by the chassis, the engine coupled to a drive train useful for propelling the vehicle. The vehicle may include a steering indexing assembly useful for positioning a steering control between a first steering position having the steering control positioned generally along the longitudinal centerline of the vehicle and a second steering position having the steering control positioned laterally of the longitudinal centerline of the vehicle.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: February 17, 2009
    Assignee: Polaris Industries Inc.
    Inventors: Norman O. Berg, Robert C. Aronson, Levi J. McCarroll, Lance L. Anderson
  • Patent number: 7487983
    Abstract: A steering system for a vehicle having a body supported on at least two sets of steerable wheels, generally consisting of a steering shaft provided with a wheel, supported on such body; a torque transmitting main shaft supported longitudinally on the body; means operatively interconnecting the steering shaft and the main shaft for transmitting rotary motion of the steering shaft to rotary motion of the main shaft; a first transversely displaceable means operatively interconnecting knuckle brackets of one of the sets of steerable wheels; means operatively interconnecting the main shaft and the first transversely displaceable means for translating rotary motion of the main shaft to linear motion of the first transversely displaceable means; second transversely displaceable means operatively interconnecting knuckle brackets of the other of the sets of steerable wheels; and means operatively interconnecting the main shaft and the second transversely displaceable means for translating rotary motion of the main sha
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: February 10, 2009
    Assignee: GPV, L.L.C.
    Inventors: James C. LeBlanc, Sr., James C. LeBlanc, Jr., Paul D. Bentley
  • Publication number: 20090032324
    Abstract: A vehicle having front and rear wheels includes a front wheel steering mechanism for providing a steering angle to a front wheel. Also, a rear wheel steering mechanism provides a steering angle to a rear wheel. The rear wheel steering mechanism has a first and second operational position; wherein the second operational position of the rear wheel steering mechanism is dependent upon the front wheel steering mechanism achieving a first predetermined steering state, preferably the steering through a prescribed angle or greater.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 5, 2009
    Applicant: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yasuhiro Suzuki, Kaoru Haruna
  • Patent number: 7472005
    Abstract: An auxiliary vehicle steering system includes a user interface for receiving a user input and transmitting a control output signal associated with the input signal. The interface is located within the vehicle. A mechanism is included for rotating a vehicle's front wheels along an arcuate path offset 90 degrees from equilibrium. The front wheel rotating mechanism includes grooved plates that have tapered outer edge portions extending along an outer perimeter thereof. A mechanism is included for rotating a vehicle's rear wheels along an arcuate path offset 90 degrees from equilibrium. The rear wheel rotating mechanism includes grooved plates that have tapered outer edge portions extending along an outer perimeter thereof. A controller is coupled to the interface that receives the control output signal and instructs the front wheel and the rear wheel rotating mechanisms to contemporaneously register the wheels orthogonal to the vehicle so that same can be laterally displaced.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: December 30, 2008
    Inventor: Ubon B. Ephraim
  • Patent number: 7418327
    Abstract: A method for determining a control standard of an active steering device (10) of a vehicle (1) controllable by a control device (11). A driving dynamic of the vehicle (1) is influenced according to the control standard. The control standard is determined according to a nominal yawing rate calculated at least with reference to different actual operating parameters of the vehicle and one dynamic vehicle state determined according to the nominal yawing rate and actual operating state parameters. The control standard is superimposed on a steering transit angle preset by a driver so that an existing actual yawing rate is changed in direction of the nominal yawing rate.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: August 26, 2008
    Assignee: ZF Friedrichshafen AG
    Inventors: Christoph Pelchen, Andreas Thies, Thomas Rosemeier
  • Patent number: 7293623
    Abstract: An assembly comprising a wheelchair and a reclining cycle part which are connectible to each other with the aid of a coupling, the reclining cycle part comprising a wheel and at least one pedal with which the wheel is drivable, so that the assembly in a coupled condition in use can be propelled by a person present in the wheelchair with the aid of a cycling motion of a leg making contact with the pedal, the reclining cycle part being further provided with a handlebar which is connected with the wheel of the reclining cycle part for steering the assembly, the assembly being provided with an electric energy source for electrostimulation, in use, of the cycling motion at the at least one leg of the person present in the wheelchair.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: November 13, 2007
    Inventor: Henricus Wilhelmus A. Berkelmans
  • Patent number: 7233850
    Abstract: An object of the present invention is to provide a vehicle steering apparatus that detects the tire load, and based on the detected tire load, performs steering control which accurately reflects the road conditions. A vehicle steering apparatus of the present invention includes a control unit 14, which controls a steering actuator in accordance with the operation of a steering wheel 1. An operation reaction force generated by a reaction force actuator 9 is applied to the steering wheel. Within the tire W, stress sensors SL and SR and an air pressure sensor SP are provided. The control unit 14 controls the steering actuator 2 and the reaction force actuator 9 with referring to the tire load detected by these sensors.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: June 19, 2007
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Shirou Nakano, Sachio Yoshida, Ryouhei Hayama
  • Patent number: 7040446
    Abstract: A power train support apparatus supports a power train which is adapted to be dropped with a load greater than or equal to a given value thereof applied substantially in a fore-and-aft direction of a vehicular body. The power train support apparatus includes: a support bracket mounted to the power train. The support bracket includes an upper connection at least which is suspended with a support member of the vehicular body. The support bracket is formed with a breakable portion which is breakable with a load greater than or equal to a given value thereof applied substantially downward from the upper connection.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: May 9, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kouji Anzai, Shinnosuke Gotoh, Hiroaki Akazawa
  • Patent number: 6926111
    Abstract: A vehicle, comprising a prime mover, a steering operation device, a first transaxle apparatus disposed at one of front and rear portions of the vehicle, and a second transaxle apparatus disposed at the other of front and rear portions of the vehicle. The first transaxle apparatus supports a pair of right and left first axles, and a pair of right and left first wheels are attached to outermost ends of the respective first axles so as to be turned laterally according to manipulation of the steering operation device. A first differential gear unit of the first transaxle apparatus differentially connects the first axles to each other. The first transaxle apparatus supports a power take-off shaft. A transmission of the first transaxle apparatus is driven by the prime mover. Output force of the transmission is shared between the first differential gear unit and the power take-off shaft.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: August 9, 2005
    Inventor: Koji Irikura