Steering By Driving Patents (Class 180/6.2)
  • Patent number: 10927934
    Abstract: A reducer, an electric vehicle drive system with the reducer, and a control method for the electric vehicle drive system with the reducer comprises, in a reducer, a first countershaft is transmittingly connected to a first input shaft, a second countershaft is transmittingly connected to a second input shaft, and a centralized driving piece is transmittingly connected to a power input end of a differential apparatus. A first transmission assembly and a second transmission assembly are respectively configured to connect or disconnect power transmission between the first countershaft and the centralized driving piece and connect or disconnect transmission assembly power transmission between the second countershaft and the centralized driving piece. A first output shaft and a second output shaft are transmittingly connected to two power output ends of the differential apparatus respectively.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: February 23, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yihong Zheng, Xiaokang Liu
  • Patent number: 10925785
    Abstract: A powered wheelchair comprises a frame and an arm assembly that includes an arm that is pivotably coupled to the frame. The arm assembly includes a wheel coupled to the arm. A drive system is coupled to the arm assembly and configured to drive a drive wheel. An arm limiter is pivotably coupled to the suspension and coupled to one or more of the arm assembly and the drive system in an engaged position. The arm limiter is configured to limit movement of the arm assembly in the engaged position.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: February 23, 2021
    Assignee: Pride Mobility Products Corporation
    Inventors: James Mulhern, Stephen J. Antonishak
  • Patent number: 10851843
    Abstract: A vehicle including a coupling device that includes (a) an engagement clutch mechanism for coupling an input side engagement member that is coupled to a drive power source of the vehicle and an output side engagement member that is coupled to a drive wheel of the vehicle; and (b) a cam mechanism for assisting engagement of the input and output side engagement members depending on a differential torque by which the input and output side engagement members are rotated differentially. The vehicle includes a control device configured, when the engagement of the input and output side engagement members is to be released, to cause a braking force to be applied to one of the input and output side engagement members such that the differential torque is reduced.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: December 1, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinichiro Shibata, Masayuki Arai
  • Patent number: 10826421
    Abstract: A microcomputer includes a current command value setting unit configured to set a two-phase current command value in a two-phase rotating coordinate system for each of PWM cycles in a current control cycle, and an open-loop control unit configured to calculate a two-phase voltage command value for each of the PWM cycles, according to a motor voltage equation, based on the two-phase current command value for each of the PWM cycles that is set by the current command value setting unit and a rotation speed of an electric motor. The two-phase voltage command value is a command value of voltage that is to be applied to the electric motor.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: November 3, 2020
    Assignee: JTEKT CORPORATION
    Inventor: Hiroshi Sumasu
  • Patent number: 10787082
    Abstract: The disclosure relates to a wheel suspension of a device having an electrical drive of a wheel for supporting a manual movement impulse. The wheel suspension includes a connector piece movably or bendably arranged between a support element or support frame connected to the device and between an interior stator of an electrical drive, wherein the connector piece is held in a starting position due to the gravity of the device, without other influencing forces. The wheel suspension also includes at least one sensor that detects a deflection of the connector piece, and a control device designed such that the control device together with the electrical drive counteracts a deflection or bending of the connector piece.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 29, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Georg Bachmaier, Marco Cyriacks, Jens Fehre, Andreas Limmer, Wolfgang Zöls
  • Patent number: 10718228
    Abstract: System for electrical energy generation from steam comprising at least one stage, each stage including: a steam-driven rotating toroidal ring; a housing comprising a toroidal cavity for containing the rotating toroidal ring, the housing further comprising at least one steam inlet, the housing further comprising a plurality of steam outlets for removing pressurized steam from the channels for at least a second portion of rotation of the rotating toroidal ring within the toroidal cavity; at least one bearing arrangement comprised by or attached to the housing within the toroidal cavity; and at least one pair of electrical coils, each electrical coil located on the outer surface of the housing at locations diagonally opposite from the other coil of each pair across the axis of the minor radius of the toroidal cavity and within the specific region where a time-varying magnetic field will occur as the rotating toroidal ring rotates.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: July 21, 2020
    Inventor: Robert Lovejoy Goodwin
  • Patent number: 10625880
    Abstract: An aircraft tug apparatus for tugging an aircraft by an aircraft tire includes a turntable on a main base portion of the tug, capable of rotational movement relative to the main base portion. A tire cradle assembly on the turntable releasably holds the aircraft tire, and a latch mechanism holds the tire cradle assembly in a position that confines the aircraft tire. A pivoting arm coupled to the main base portion extends under the turntable. The pivoting arm includes a first plunger and a second plunger extending therefrom, with the first plunger coupled to the pivoting arm using a spring assembly allowing it to move up and down relative to the pivoting arm. The spring assembly is configured such that the pivoting arm may move the second plunger to engage the latch mechanism while the first plunger is impinged by the turntable.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: April 21, 2020
    Inventors: Anthony Chan, Tracy Haeggstrom
  • Patent number: 10571911
    Abstract: In an operational mode of a vehicle, a vehicle system can be influenced by a mix of autonomous control inputs and manual control inputs. A first weight can be assigned to manual control inputs, and a second weight can be assigned to autonomous control inputs. While the vehicle is being operated primarily by manual inputs from a human driver, it can be determined whether the human driver of the vehicle has made a driving error and whether a current driving environment of the vehicle is a low complexity driving environment. Responsive to determining that the human driver of the vehicle has made the driving error and to determining that the current driving environment of the vehicle is a low complexity driving environment, the second weight assigned to autonomous control inputs can be automatically increased. Autonomous control inputs can influence the vehicle system in an amount corresponding to the second weight.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: February 25, 2020
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Danil V. Prokhorov
  • Patent number: 10478971
    Abstract: A robot includes a main casing, a first spherical cap and a second spherical cap, and a shaft linking the spherical caps. The robot further includes a display, a first driving mechanism causing the first and second spherical caps to be rotated by the shaft, and a second driving mechanism that causes the main casing to be rotated. The robot also includes a control circuit and an electric power source, charged by electric power from an external charger. If the remaining electric power of the electric power source is lower than or equal to a predetermined value, the second driving mechanism is controlled to stop rotation of the main casing, and the first driving mechanism is controlled to switch a rotational direction of the first spherical cap and the second spherical cap, causing the display to be reciprocally moved in a vertical direction.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 19, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kento Ogawa, Ryouta Miyazaki, Michiko Sasagawa, Yuji Kunitake, Seiya Higuchi
  • Patent number: 10457097
    Abstract: A track work vehicle includes an axle input shaft defining a first axis of rotation, and a differential gear case having at least one planetary gear set. The track work vehicle includes a track drive system contained, at least in part, in the differential gear case. The track drive system includes a first gear coupled to the axle input shaft and a second gear coupled to the first gear. The track drive system includes a bevel gear assembly coupled to the second gear and a bevel gear set coupled to the planetary gear set. The track work vehicle includes at least one drive axle coupled to the planetary gear set and a drive wheel for driving a continuous ground-engaging track. The drive axle has a second axis of rotation that is vertically offset from the first axis of rotation and substantially coaxial with a centerline of the drive wheel.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 29, 2019
    Assignee: DEERE & COMPANY
    Inventors: Jeffrey L. Lubben, Mark W. Freudenberg
  • Patent number: 10422412
    Abstract: A drive unit with an electric motor and a speed-transforming transmission connected in a rotationally driven manner to a power take-off shaft of the electric motor, in which the electric motor comprises a stator and a rotor comprising the power take-off shaft, is characterized in that the speed-transforming transmission is arranged inside the power take-off shaft constituted as a hollow shaft.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: September 24, 2019
    Assignee: EHRT Maschinenbau GmbH
    Inventor: Andreas Winters
  • Patent number: 10371548
    Abstract: A device for measuring an absolute angle includes first and second rotatable members having first and second radii and capable of rotating over first and second angles respectively, a first number of detectable elements mounted on the first rotatable member, a second number of detectable elements mounted on the second rotatable member, and at least one sensor for detecting rotation of the detectable elements. The second rotatable member is coupled with the first rotatable member such that the second angle is equal to the first angle times the ratio of the first radius and the second radius. The first radius is equal to a first integer times a factor, while the second radius is equal to a second integer times the factor. The product of the first number and the second integer, and the product of the second number and the first integer, are co-prime.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: August 6, 2019
    Assignee: Aktiebolaget SKF
    Inventor: Georgo Angelis
  • Patent number: 10286947
    Abstract: The invention concerns a method for detecting a transition (4?) in a noisy signal, which involves submitting a noisy signal (?Signal) carrying an item of information used for managing the power steering, said method comprising a derivation sub-step (a1), which involves evaluating the time derivative of the noisy signal (?Signal/?t), following by a selective filtering sub-step (a2) which involves comparing said time derivative of the noisy signal (?Signal/?t) with a predefined variation threshold (Spic) in order to detect the appearance of a derivative peak (7), greater than said variation threshold (Spic), evaluating the holding time (dpic) of said derivative peak, during which the time derivative of the noisy signal (?Signal/?t) is held above said variation threshold (Spic), and checking if said peak holding time (Spic) reaches or exceeds a predefined minimum time threshold (d0).
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: May 14, 2019
    Assignee: JTEKT EUROPE
    Inventors: Sébastien Bourdrez, Pascal Moulaire, Christophe Ravier
  • Patent number: 10112479
    Abstract: The present invention discloses an obstacle-adaptive mechanism of a moving device, which uses a driving wheel, a driving gear, a passive wheel, a passive gear and an intermediate gear as a transmission mechanism, wherein the driving gear is connected to one side of the driving wheel, the passive gear is connected to one side of the passive wheel, the intermediate gear is disposed between the driving gear and the passive gear to keep the driving wheel and the passive wheel rotating in the same direction to help crossing an obstacle, thereby preventing the obstacle-adaptive mechanism from being stuck by the obstacle and allowing the obstacle-adaptive mechanism to successfully crossing the obstacle. Therefore, the obstacle-adaptive mechanism of the moving device can provide the ability for crossing obstacles.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 30, 2018
    Inventor: Jason Yan
  • Patent number: 10081984
    Abstract: A downhole motor (107) which comprises a stator housing (108), a rotor assembly (106) rotatable relative to said stator housing, and an arrangement for enabling, in use, a drill bit connected to the rotor assembly of said downhole motor to be rotated by rotating a drill string connected to said stator housing, wherein said arrangement comprises a unidirectional clutch (117) disposed between said rotor assembly and said stator housing and having at least one pawl which can be displaced between an inoperative position adjacent said stator housing and an operative position in which rotation of said stator housing by said drill string in one sense is transmitted to said rotor assembly via said at least one pawl, means biasing said at least one pawl towards said operative position, means retaining said at least one pawl in its inoperative position, and means which, when sufficient pulling force is applied to said drill string, will cause said means retaining said at least one pawl to release said at least one pawl
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: September 25, 2018
    Assignee: NOV Downhole Eurasia Limited
    Inventor: Rory McCrae Tulloch
  • Patent number: 10059199
    Abstract: A rear-wheel drive apparatus of an eco-friendly vehicle is capable of improving the longitudinal driving force and handling performance of a vehicle by independently driving both rear wheels of the vehicle using a plurality of drive motors.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 28, 2018
    Assignee: Hyundai Dymos Incorporated
    Inventors: Hee Cheon Jeong, Geun Ho Kim, Sang Ki Lee
  • Patent number: 9811109
    Abstract: A control device for a crawler vehicle, comprising a control lever activated by an operator about a fulcrum and having a free end, the control lever being displaceable along a longitudinal direction of the vehicle between a proximal position closer to the operator and a distal position further from the operator in order to control a main clutch of the vehicle, the control device further comprising a support element suitable for being fixed to a body of the vehicle in order to support an operator's hand when the hand acts on the control lever, wherein the control lever has an intermediate portion interposed between the free end and the fulcrum, the intermediate portion being so shaped as to partially embrace the support element in the proximal position.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: November 7, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Fabio Pescione, Enrico Conti, Sergio Magrini
  • Patent number: 9604669
    Abstract: A drive mechanism (10) for a tracked vehicle. The drive mechanism includes an electric drive motor (1) for supplying drive power and an electric steering motor (3) for supplying steering power. Mechanical drive elements (4, 5) transmit reactive power between a right-hand drive side (12) and a left-hand drive side (11) when driving around a curve or bend. An electric auxiliary motor (2) selectively assists either the drive motor (2) or the steering motor (3).
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 28, 2017
    Assignee: ZF Friedrichshafen AG
    Inventors: Henning Sonnenburg, Ralf Boss
  • Patent number: 9486384
    Abstract: A walking assist cart includes a cart body on which a load can be placed, a drive portion that drives a drive wheel, an inclination sensor that detects the inclination angle of the cart body, and a controller that acquires the weight of the load placed on the cart body based on the drive force of the drive portion and the inclination angle of the cart body and outputs assist drive force based on the weight of the load that is acquired.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: November 8, 2016
    Assignee: Funai Electric Co., Ltd.
    Inventor: Takahiro Katayama
  • Patent number: 9469285
    Abstract: A brake arrangement for a vehicle having a cardan brake and separate left and right brakes. The left brake activated by movement of a first lever and the right brake is activated by movement of a second lever. The left brake, right brake and the cardan brake are activated together by movement of both levers together, characterized in that the cardan brake is connected to a fluid supply in a circuit which comprises a first and a second brake valve arranged in series and the first brake valve is operable by the first lever and the second brake valve is operable by the second lever.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 18, 2016
    Assignee: AGCO INternational GmbH
    Inventors: Hans-Peter Zeiler, Klaus Brugger
  • Patent number: 9296370
    Abstract: A brake system for a motor vehicle includes a first control module coupled to a first hydraulic brake circuit and a second hydraulic brake circuit. The first control module is configured to control fluid pressure within both the first hydraulic brake circuit and the second hydraulic brake circuit. A second control module coupled to the first hydraulic brake circuit and the second hydraulic brake circuit, wherein the second control module is configured to control fluid pressure within both the first hydraulic brake circuit and the second hydraulic brake circuit independent of the first control module. The first control module is disposed in series with the second control module in the first hydraulic brake circuit and the second hydraulic brake circuit.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 29, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Jeremy Jason McClain, Geoff Bauer, Joerg Scheibel
  • Patent number: 9296436
    Abstract: A chassis for a roof bolter includes a first plate positioned on a first side of the chassis and having a first mating surface, a second plate positioned opposite and substantially parallel to the first plate on a second side of the chassis and having a second mating surface substantially parallel to the first mating surface, and a plurality of openings positioned on the first plate and the second plate for receiving one or more fasteners, including wheel attachment openings for coupling the wheel assembly to at least one of the first plate or the second plate when the roof bolter is in a wheel configuration, and crawler attachment openings for coupling the crawler assembly to at least one of the first plate or the second plate when the roof bolter is in a crawler configuration.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 29, 2016
    Assignee: Caterpillar Global Mining America LLC
    Inventors: James W. Coe, Jr., Tobi D. Crigger
  • Patent number: 9168786
    Abstract: A mobile robot configured to be widely versatile in its use. For example, the mobile robot can be configured for being used on a wide assortment of surfaces, regardless of the orientation and/or shape of the surfaces. Alternatively or in combination, the mobile robot can be configured for effective and efficient movement on the surfaces it traverses. In some cases, the mobile robot is configured with two or more component units. In some cases, the component units are configured with magnets and a control system for orientating the magnets. In some cases, one or more component couplings join the component units. In some cases, the mobile unit is configured with Mecanum wheels.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 27, 2015
    Assignee: Helical Robotics, LLC
    Inventors: Keith L. Schlee, Bruce A. Schlee
  • Patent number: 9126497
    Abstract: Method for controlling a vehicle that includes a support, at least one wheel, a platform coupled to the at least one wheel, a coupling structure having a support portion coupled to the support and a platform portion coupled to the platform that allows the support portion to move or slide fore and aft with respect to the platform portion, an actuator coupled to the coupling structure to control the position of the support portion relative to the platform portion, a drive coupled to the at least one wheel to deliver power to the at least one wheel to propel the vehicle and maintain the platform level, and a controller coupled to the drive to control the drive and coupled to the actuator to control the actuator.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: September 8, 2015
    Assignee: SEGWAY, iNC.
    Inventors: John David Heinzmann, Jon M. Stevens, Raymond Debruin, Anthony Foale, Joseph Hoell, Jr., Patrick A. Hussey, Alexander Muller
  • Patent number: 9126598
    Abstract: The invention relates to power management of a off-highway vehicle. A power management apparatus is described as a vehicle control unit coupled to a vehicle and the vehicle control unit is in communication with an engine and a transmission controller. In response to power management input, the vehicle control unit sends a message to the transmission controller commanding a maximum torque limit based on the maximum drivetrain torque. The maximum torque limit is configured to optimize power to the vehicle implement.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: September 8, 2015
    Assignee: DEERE & COMPANY
    Inventors: Jahmy Hindman, Eric R Anderson, Chris Maifield, Christopher G Parish, Jeremiah J Bock, Daniel Pflieger, Kevin L Pfohl, Clayton G Janasek, Briton T Eastman, Michael D Testerman, Michael L Frank
  • Patent number: 9096268
    Abstract: A mounting apparatus for positioning an actuator managing the pivotal position of rotatable pintel arms controlling the output of a pair of tandem-mounted hydraulic drive pumps providing motive power for an agricultural machine. The pumps are resiliently connected to the machine main frame, permitting relative movement to reduce vibration transmission to the main frame. A mounting bracket connected to the drive pumps provides a fixed connection for a first end of the actuator while the opposing second end is connected by an axially moveable linkage to the pintel arms. A common anchorage for the actuator and the pintel arms eliminates unintended pintel arm movement that occurs when anchoring the end of the actuator on the main frame.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: August 4, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Todd B. Pierce, Philip J. Ehrhart
  • Patent number: 9090214
    Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing mechanism is coupled to the internal drive system and includes a spring and a spring end in contact with the inner surface of the spherical housing. An accessory component magnetically interacts with the biasing mechanism through the spherical housing such that as the self-propelled device rotates along, the accessory component remains stable with respect to the biasing mechanism.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: July 28, 2015
    Assignee: Orbotix, Inc.
    Inventors: Ian H. Bernstein, Adam Wilson, Mickey Kong Chun
  • Patent number: 9051711
    Abstract: An apparatus and method are provided for operating a motor grader having steerable front wheels and a front and rear frame pivotally connected at an articulation joint. The method includes selecting an automatic articulation mode, and commanding front wheel steering to turn the motor grader, providing a plurality of front wheel steering corrections to an electronic controller, filtering the plurality of front wheel steering corrections using a method for filtering steering corrections based on the constant curve mode, wherein the method generates filtered front wheel steering corrections, and automatically commanding articulation of the front frame relative to the rear frame about the articulation joint in response to the filtered front wheel steering corrections.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 9, 2015
    Assignee: Caterpillar Inc.
    Inventors: Amit Sharma, Eric C. Hughes, Steven C. Budde
  • Patent number: 9050932
    Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing mechanism is coupled to the internal drive system and includes a spring and a spring end in contact with the inner surface of the spherical housing. An accessory component magnetically interacts with the biasing mechanism through the spherical housing such that as the self-propelled device rotates along, the accessory component remains stable with respect to the biasing mechanism.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 9, 2015
    Assignee: Orbotix, Inc.
    Inventors: Ian H. Bernstein, Adam Wilson, Mickey Kong Chun
  • Publication number: 20150129326
    Abstract: An inverted pendulum control type moving body is provided with: a first driving portion that moves a host moving body at least in a forward/backward direction; a supporting portion that supports the inverted pendulum control type moving body so that it stands independently in a state of being in contact with the ground; an operation portion that switches between the ground contact state and a ground separation state of the supporting portion; and a control portion that, when the operation portion switches the state of the supporting portion from the ground contact state to the ground separation state, controls operation of the first driving portion so that a forward/backward direction tilt angle of the inverted pendulum control type moving body approximates a target tilt angle in the ground contact state.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Kazumasa OZAKI, Hiroshi IWAKAMI, Shinji KAWATANI, Hideo MURAKAMI, Shinya SHIROKURA, Atsushi MATSUNAGA, Tomokazu SAKAMOTO, Makoto HASEGAWA, Shinichiro KOBASHI
  • Patent number: 8997902
    Abstract: A steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjusting the pivotal position of rotatable pintel arms to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. A control input shaft that is both rotatable and axially moveable manages the relative positioning of the pintel arms. A hydraulic steering motor is operably connected to the input shaft. Rotation of the hydraulic steering motor is managed by a steering control valve attached to a cab-mounted windrower steering wheel.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 7, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Todd B. Pierce, Philip J. Ehrhart, Jeffrey Fay, II, Mark D. Layton
  • Patent number: 8967303
    Abstract: A displaceable system is provided including at least one set of at least two wheels arranged in pairs for movement in a plane, the set being disposed on at least one wheel axle parallel to the plane. A single electric drive motor, a differential having variable torque distribution, and an electric servomotor are provided on the wheel axle for both wheels of a set. The electrical servomotor acts on the differential such that the torque generated by the single electric drive motor is distributed within the wheel axle individually to the wheels.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: March 3, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Tomas Smetana, Raphael Fischer, Bernd Gombert
  • Publication number: 20150040442
    Abstract: A vehicle having a long track or wheel-trail wheel combination on one side and a smaller ground engaging member, such as a short track or wheel on the other. The vehicle has a work attachment on one end of its frame, which is provided clearance on the side of the vehicle with the short track or wheel. A control system is provided to allow an operator to properly control a direction of the vehicle despite the fact that different forces may be required to operate the long track and the short track or wheel.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 12, 2015
    Inventors: Cody L. Sewell, Brant Douglas Kukuk
  • Patent number: 8948971
    Abstract: Disclosed is a steering control device capable of adjusting reference points of a plurality of motions, which are used for a steering operation in a steering operating unit, with high precision. In the steering control device, a control unit performs N-point learning under the condition that the absolute value of an operating amount in operation systems other than a target is smaller than a predetermined value (or substantially 0). This makes it possible to suppress the influence of operation systems other than the target on the steering of a vehicle M during N-point learning, making it possible to learn the N point in the operation system of the target with high precision. With this N-point learning for each target, even in an operation system which can be steered through a plurality of motions, it is possible to learn the N point of each motion with high precision.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masatoshi Nakatsu
  • Patent number: 8948970
    Abstract: [Problem] An object of the present invention is to provide an electric power steering apparatus that realizes weight saving and downsizing of component parts by counting and controlling the number of times of end hitting and simultaneously calculating a current limit value depending on the number of times of end hitting to limit assist.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: February 3, 2015
    Assignee: NSK Ltd.
    Inventors: Shinji Okada, Hideyuki Kobayashi, Naoki Sawada
  • Publication number: 20150008050
    Abstract: A personal mobility vehicle comprising a platform (10) on which a user of the vehicle can stand, ground-engaging wheels (14, 15, 16) on which the platform (10) is supported, motor drive means, motor control means (20), a column (11) extending upwards from the platform (10) and a leg or thigh support rest (18) mounted on the column.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 8, 2015
    Applicant: Rollerscoot Ltd.
    Inventor: Ian Gray
  • Publication number: 20140353051
    Abstract: In an inverted pendulum type vehicle no excessive load is exerted on a sub-wheel even in the case where some downward load is exerted on a sub-wheel arm. The inverted pendulum type vehicle includes a main wheel capable of moving forward, rearward, to the left and to the right with a vehicle body frame supported by the main wheel. The inverted pendulum type vehicle further includes the sub-wheel arm turnably supported on the vehicle body frame with the sub-wheel being supported by the sub-wheel arm and being grounded. The sub-wheel is supported through a deformable biasing device, and is biased into a predetermined position in relation to the sub-wheel arm. When a downward load is exerted on the sub-wheel arm, the biasing device deforms, whereby at least part of the sub-wheel arm is grounded.
    Type: Application
    Filed: April 7, 2014
    Publication date: December 4, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Wataru YADA, Hiroshi IWAKAMI
  • Patent number: 8887840
    Abstract: A lawnmower includes a chassis; a seat supported on the chassis for permitting an operator to sit or stand on the chassis; a pair of drive wheels for supporting the chassis above a ground surface; an engine and a pair of transmissions for driving the drive wheels; and a pair of manually-moveable handle assemblies for controlling the transmissions. Each handle assembly includes a substantially vertically-extending control handle, wherein the control handles are mounted outboard of opposite sides of the seat so as not to block the operator's ingress or egress from the seat.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: November 18, 2014
    Assignee: Swisher Acquisition, Inc.
    Inventor: Aaron Samuel Poe
  • Patent number: 8862331
    Abstract: It is an object of the present invention to provide a controller for a steering apparatus having easy operation of an adjustment of a tilting angle. The steering apparatus comprises a tilting mechanism adjusting a tilting angle of a steering wheel, and an electrical motor driving the tilting mechanism. The controller for the steering apparatus 1 detects the tilting angle based on a rotational angle of the screw shaft. The controller defines the predetermined supplying current according to the detected amount of the tilting angle as the supplying current to the electrical motor.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: October 14, 2014
    Assignee: JTEKT Corporation
    Inventors: Eiji Tanaka, Tomihide Masuda
  • Patent number: 8839891
    Abstract: A method includes operating a wheeled vehicle including an articulated suspension system; and articulating the suspension system to skid steer the vehicle. A wheeled vehicle having an articulated suspension system includes a skid steering controller capable of articulating the suspension system to skid steer the vehicle. The skid steering controller may be implemented in software and may, but does not necessarily, include three stages for applying a differential torque, varying the traction of at least one wheel, and finely adjusting the wheel's suspension to approach a critical damped response of the vehicle turning rate with respect to its commanded rate, respectively.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: September 23, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Joseph H. Kaloust, Wendell H. Chun
  • Publication number: 20140262559
    Abstract: A non-zero caster angle for the rear axle swivel caster wheels on a self-propelled agricultural harvesting machine wherein steering is accomplished by varying speed and/or direction of forward drive wheels. The non-zero caster angle may be fixed or an adjuster mechanism may be provided to allow adjustment within a range of caster angles. The adjuster mechanism incorporates a fixed portion connected to the tractor frame and a pair of rotating portions, one connected to each caster wheel which allows rotation of the caster axis in a plane parallel to the machine longitudinal axis. Also disclosed is an actuator mechanism for providing powered adjustment of the caster angle, even including a control system for active caster angle adjustment.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: CNH AMERICA, LLC
    Inventors: DAVID M. DeCHRISTOPHER, BENJAMIN C. DIEM, TODD B. PIERCE
  • Patent number: 8827012
    Abstract: The present invention provides an automated clean machine with a steering mechanism wherein the steering mechanism of the automated clean machine which gets held up restricts one of conjoint wheels not to synchronously rotate in contrast to the other one during a steering process, minimizing wheel wear, and resuming the wheels' synchronous running in next normal movement.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: September 9, 2014
    Inventor: Jason Yan
  • Publication number: 20140237969
    Abstract: An assist handle for assisting an operator with climbing on to, or off of, a ground maintenance vehicle such as a mower, and a ground maintenance vehicle incorporating the same. The assist handle includes, in one embodiment, a grip portion movable between a deployed position, wherein the grip portion is positioned at a deployed elevation configured to assist the operator with ingress to, or egress from, a platform such as a seat; and a stowed position, wherein the grip portion is positioned at a stowed elevation lower than the deployed elevation.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: THE TORO COMPANY
    Inventors: Dale A. Stover, Todd A. Porter
  • Patent number: 8818632
    Abstract: In a machine having a differential steering control system, uncommanded motion may be determined by comparing an actual speed of a steering motor to a commanded turn direction signal from an operator. Where uncommanded motion is occurring, the steering motor speed and time-rate-of-change of the steering motor speed may be used to determine a weighted steering motor speed that is accumulated over a series of sample cycles and compared to an integration limit to determine whether the operator should be warned of the occurrence of uncommanded motion. The integration limit may be based on a factor indicative of the responsiveness of the machine, such as the oil temperature.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: August 26, 2014
    Assignee: Caterpillar Inc.
    Inventors: Harold Dabbs, Brittany J. Lee
  • Publication number: 20140231154
    Abstract: The present invention provides an automated clean machine with a steering mechanism wherein the steering mechanism of the automated clean machine which gets held up restricts one of conjoint wheels not to synchronously rotate in contrast to the other one during a steering process, minimizing wheel wear, and resuming the wheels' synchronous running in next normal movement.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Inventor: Jason Yan
  • Patent number: 8798862
    Abstract: An electric power steering device wherein mechanical friction is electrically provided. A steering torque value is detected by a steering torque sensor according to the operation of a steering wheel. An assist current value is calculated by an assist control section on the basis of the steering torque value. A target current value based on the assist current value is determined. For providing friction to the operation of the steering wheel, a friction control section and a friction torque value/current value conversion section generate a corrected steering torque value. A second corrected target current value is created by correcting a first corrected target current value by a friction current value. The corrected steering torque value is obtained by correcting the steering torque value by a friction torque value. The target current value is generated, resulting in a motor being subjected to driving control.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: August 5, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshihiro Oniwa, Yasuo Shimizu, Shigeru Yamawaki, Kazushige Sugamata, Atsuhiko Yoneda
  • Patent number: 8783390
    Abstract: A vehicle drive apparatus independently controls drive forces for a front-right drive wheel, a front-left drive wheel, a rear-right drive wheel, and a rear-left drive wheel using a front-right electric motor, a front-left electric motor, a rear-right electric motor, and a rear-left electric motor, respectively. The drive forces for the drive wheels of a vehicle incorporating the vehicle drive apparatus are determined based on the target moments in the yaw and roll directions of the vehicle, the total drive for the drive wheels, and the drive reaction forces at the drive wheels. Thus, the performance desired by the driver can be achieved, and the drivability therefore improves accordingly.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: July 22, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinori Maeda, Akihiro Hosokawa, Yousuke Suzuki, Michitaka Tsuchida, Kazuya Okumura, Tadahiro Oshiumi, Kensuke Yoshizue, Koji Sugiyama
  • Patent number: 8762005
    Abstract: In control of a vehicle that is provided with a steering torque supply device that supplies a steering torque to a steering device coupled to a steered wheel and a steering transmission ratio variation device that changes a steering transmission ratio, the control includes: setting a target state quantity for keeping the vehicle in a target lane; controlling the steering transmission ratio variation device so that a state quantity of the vehicle becomes the set target state quantity; controlling the steering torque supply device so that a steering reaction restriction torque that restricts a steering reaction torque generated in the steering device is supplied with the steering device as the steering torque when the vehicle is kept within the target lane; and correcting the steering reaction restriction torque on the basis of a steering input when the steering input from a driver of the vehicle is produced.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: June 24, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Theerawat Limpibunterng, Yoshiaki Tsuchiya, Shoji Asai
  • Patent number: 8762003
    Abstract: A leaning vehicle has a frame pivotally connected to the lower end of a shock tower, the pivotal connection defining a frame leaning axis wherein the frame is adapted to lean to a right side and to a left side relative to the shock tower about the frame leaning axis. The leaning vehicle includes an actuator operatively connected to the frame and to the shock tower which is adapted to impart a leaning motion to the frame relative to the shock tower about the frame leaning axis.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: June 24, 2014
    Assignee: Bombardier Recreational Products Inc.
    Inventor: Daniel Mercier
  • Publication number: 20140151136
    Abstract: A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second fraction devices together via one of the first and second steering inputs.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: Deere & Company
    Inventors: Michael J. Boyle, Justin R. Shook, Mark K. Wall, Jeffrey A. Friebel