Displaceable Wheel Shifts Or Proportions Load Patents (Class 180/24.02)
  • Patent number: 10450016
    Abstract: A disclosed lift axle is suitable for a vehicle that has a first wheel for supporting the vehicle on a road surface. The lift axle system includes a lift mechanism that is coupled to the vehicle and is configured to reciprocate an axle between a stowed position and deployed position. The lift axle system further includes a second wheel coupled to the axle. The second wheel engages the road surface when the lift mechanism is in the deployed position, and the second wheel is disengaged from the road surface when the lift mechanism is in the stowed position. The second wheel has a lower rolling resistance than the first wheel.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: October 22, 2019
    Assignee: PACCAR Inc
    Inventor: Jeffrey P. Smith
  • Patent number: 10358011
    Abstract: A dynamic weight shift suspension system for shifting the tandem axle loads on a vehicle. The system includes a first airbag connected between the drive axle of a tandem and the vehicle frame, and a second airbag connected between a tag axle of a tandem and the vehicle frame. The system also has a mechatronic control unit comprising at least one port and at least one solenoid. The mechatronic control unit is in direct fluid communication with the airbags and an air supply via fluid communication lines.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: July 23, 2019
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Christopher D. Blessing, Christopher P. Lewark, Jason M. Sidders
  • Patent number: 10328760
    Abstract: A vehicle suspension system having a twist beam axle including a crossbeam and two trailing arms connected thereto. The rear ends of each trailing arm, in the motor vehicle longitudinal direction, having with a wheel mount for fastening a motor vehicle wheel. The front ends of each trailing arm connected via a bearing to the motor vehicle body. Each bearing associated with a MEMS designed as an actuator wherein movements of the bearings and therefore the twist beam axle about the vertical motor vehicle axis can be caused or unfavorable movements of the twist beam axle can be counteracted.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: June 25, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Christoph Arndt Dr habil, Uwe Gussen
  • Patent number: 10308088
    Abstract: A mechanical down-stop for heavy-duty vehicle axle/suspension systems which includes an angled bracket that is rigidly/stiffly attached to the vehicle frame at one end, and is attached to a flexible portion of the mechanical down-stop at its other end. The flexible portion is attached to a beam of the axle/suspension system. The angled bracket is formed of an elastically deformable material and includes a bend that enables the bracket to act as a spring. The angled bracket and the flexible portion limit downward movement and react the downward force of the beam.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: June 4, 2019
    Assignee: Hendrickson USA, L.L.C.
    Inventors: Nicholas J. Giamati, Jacob D. Andreasen
  • Patent number: 10150399
    Abstract: An apparatus is provided for raising and lowering a vehicle that is supported by a wheel suspended from a frame of the vehicle by a suspension component. The apparatus includes a linear actuator that is vertically oriented to move the wheel of the vehicle relative to the frame of the vehicle. A compression device is arranged to compress the suspension component of the vehicle in response to movement of the wheel by the linear actuator.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: December 11, 2018
    Assignee: EM Solutions Incorporated
    Inventor: Aaron P. Kangas
  • Patent number: 10131195
    Abstract: A base unit for a vehicle such as a mobile work platform includes a chassis and multiple wheels, at least one of the wheels being mounted on the chassis by a suspension mechanism including a suspension element. The suspension element pivots relative to the chassis about a substantially horizontal pivot axis between an upper position and a lower position, and a stop member engages the suspension element in the upper position to limit its upwards movement. A biasing mechanism exerts a biasing force on the suspension element to urge the suspension element upwards towards the upper position.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: November 20, 2018
    Assignee: NIFTYLIFT LIMITED
    Inventor: Roger Bowden
  • Patent number: 10106010
    Abstract: A walking beam assembly includes a support beam and a mount member configured to mount the support beam on a vehicle chassis. Furthermore, the assembly includes a gear assembly that is supported proximate an end of the support beam. The gear assembly includes a gear train and a gear housing. The gear train is operably coupled to a wheel hub. The gear housing substantially encloses the gear train. Moreover, the walking beam assembly includes an input drive assembly with at least one movable part configured to deliver an input torque from the vehicle engine to the gear train. The input drive assembly includes an input drive housing that substantially encloses the at least one movable part. The input drive housing is attached to the gear housing such that an interior of the input drive housing is in fluid communication an interior of the gear housing.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 23, 2018
    Assignee: DEERE & COMPANY
    Inventor: Steven R. Fliearman
  • Patent number: 10046814
    Abstract: In a truck vehicle, a controller controls a mechanism to apportion the sum total of weight borne by a tandem axle between a drive axle and a tag axle.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 14, 2018
    Assignee: International Truck Intellectual Property Company, LLC
    Inventors: Grzegorz Siuchta, James Jerome Korson
  • Patent number: 10028870
    Abstract: The invention relates to a powered wheelchair for transporting a person, comprising a seat frame for supporting the person, a pair of opposing main wheel assemblies, including a first main wheel assembly and a second main wheel assembly connected to the seat frame, and a third main wheel assembly arranged spaced apart from the pair of opposing main wheel assemblies and connected to said seat frame. The powered wheelchair further comprises a support wheel arrangement for supporting the powered wheelchair, said support wheel arrangement having a main beam and a front support wheel unit capable of being applied to a ground surface. The main beam is rotatably connected to said third main wheel assembly at a third connection point and connected via a guiding mechanism to the first main wheel assembly at a first connection point.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: July 24, 2018
    Assignee: REAC AB
    Inventor: Carl Johan Olsson
  • Patent number: 9809074
    Abstract: A trailing axle suspension system is disclosed comprising an auxiliary chassis, an axle suspension system suspending a trailing axle from the auxiliary chassis, and an auxiliary chassis system suspending the auxiliary chassis from the chassis of a motor vehicle. With the auxiliary chassis suspension system including a pair of suspension arms supporting the auxiliary chassis for pivotal movement and adapted to be pivotally connected to the motor vehicle chassis. And with the axle suspension system and auxiliary chassis suspension system adapted to cooperatively establish the auxiliary chassis and trailing axle in a stowed condition on the motor vehicle and establish the auxiliary chassis and trailing axle in a deployed condition at a location rearward of the motor vehicle chassis and then forcibly cause the auxiliary chassis to help support the motor vehicle chassis with the trailing axle.
    Type: Grant
    Filed: March 19, 2016
    Date of Patent: November 7, 2017
    Inventors: Brooks Strong, Joshua Cayne Fisher
  • Patent number: 9776677
    Abstract: A lift axle suspension for a tandem trailer has first and second suspension air bags for first and second axles. There is a lift air bag that, when pressurized, applies a lifting force to lift the second axle relative to the first axle. A first pneumatic circuit supplies compressed air to the first suspension air bag and a diverter valve and is controlled by a height selector valve that is opened and closed based on the ride height of the trailer. The diverter valve selectively supplies compressed air to the second suspension air bag and a pressure regulator that limits air pressure to a predetermined pressure. A second pneumatic supplies compressed air to the lift air bag and is controlled by a pilot valve.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: October 3, 2017
    Inventor: Kelly W Yakimishyn
  • Patent number: 9598126
    Abstract: An automatic auxiliary axle control system is disclosed for a load-transporting motor vehicle having two or more primary axles and one or more auxiliary axles wherein the control system detects a noncompliant axle carrying weight condition when the weight of the vehicle acting on any one of the primary axles exceeds a prescribed maximum allowable axle carrying weight assigned to that axle and also when the weight acting on any group of the axles arranged consecutively exceeds a prescribed maximum allowable axle group carrying weight assigned to that axle group. And the control system on such detection effects auxiliary axle usage that results in no maximum allowable axle carrying weight and maximum allowable axle group carrying weight being exceeded provided the current gross vehicle weight does not exceed a prescribed maximum allowable gross vehicle weight determined by all of the axles and the current center of gravity of the vehicle is located within a certain compliance-manageable range.
    Type: Grant
    Filed: July 18, 2015
    Date of Patent: March 21, 2017
    Inventors: Brooks Strong, Joshua Cayne Fisher
  • Patent number: 9475355
    Abstract: A tag axle suspension system can include a tire and at least one hanger bracket pivotable relative to a vehicle frame to deployed and lifted configurations. In the lifted configuration, the tire can be a lowest component of the suspension system, and can be a first component to engage a road surface. A tag axle suspension system can include an air spring and a travel limit device that limits compression of the air spring in a lifted configuration of a hanger bracket. A tag axle suspension system can include an axle, a suspension arm pivotably connected between a hanger bracket and the axle, and a travel limit device that limits displacement of the suspension arm in a lifted configuration of the hanger bracket. The travel limit device can limit displacement of the axle toward an air spring support in the lifted configuration of the hanger bracket.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: October 25, 2016
    Assignee: WATSON & CHALIN MANUFACTURING, INC.
    Inventors: Jeffrey Layne, Damon Delorenzis, Christopher Mlinarich
  • Publication number: 20150107917
    Abstract: A simply structured suspension structure for an electric wheelchair includes a frame, two drive units, two front guide units, two front shock absorbers, two anti-roll units, and two rear shock absorbers. The two front guide units are located at both sides of the frame and each include a front guide wheel, a front suspension arm and a torsion spring. The two front and rear shock absorbers are connected to the frame. The two anti-roll units are located at both sides of the frame. When the front guide arms drive the front guide wheels to pivot, the torsion springs can produce a reaction force to prevent the frame from rolling over, improving safety. When the suspension structure runs across an uneven bumpy road, the front and rear shock absorbers can ease the shock imposed on the frame, enhancing sitting comfort.
    Type: Application
    Filed: August 7, 2014
    Publication date: April 23, 2015
    Inventor: Donald P. H. Wu
  • Patent number: 8991832
    Abstract: The present disclosure relates to double acting suspension axle assemblies that can be used to facilitate mobility of a heavy load transporter and/or to adjust a deck height of the heavy load transporter. Each axle assembly includes a wheel assembly and a double-acting hydraulic cylinder. The double acting suspension axle provides the ability to force the hydraulic cylinder of each axle assembly to fully retract without relying solely on gravity. The double acting suspension axle assembly may be incorporated directly into or permanently affixed to other large structures, such as mobile robots, large tooling structures, gantry cranes, or other large machinery to provide the precise control of mobility and forced lowering capabilities.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 31, 2015
    Assignees: Doefer Companies, Clover Industries Inc.
    Inventors: David M. Tetzlaff, John R. Burnett, Jason Van Clark, Melvin D. Terry
  • Patent number: 8967638
    Abstract: A lift axle suspension system is provided with a frame bracket member connectable to a vehicle frame, an upper control arm, and a lower control arm. Each control arm has a first end and a second end, with the first end of each control arm being pivotally connected to the frame bracket member. The suspension system also includes an axle connecting member connectable to an axle, with the second end of each control arm being pivotally connected to the axle connecting member. A compression coil spring having a first end connected to the lower control arm and a second end connected to the upper control arm serves as a lift mechanism for lifting and lowering the axle connected to the axle connecting member. The compression coil spring may encircle at least a portion of and be substantially coaxial with the lower control arm.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: March 3, 2015
    Assignee: Hendrickson USA, L.L.C.
    Inventor: Michael J. Gottschalk
  • Patent number: 8950762
    Abstract: A vehicle and a suspension system, for stabilizing vehicle disposition by lowering the center of gravity, and improving stability control performance are provided. The vehicle includes a body, at least one arm, a bottom unit, which may be a wheel, coupled to one end of an arm of the at least one arm, and a suspension system having a spring disposed to generate a counter moment in a direction that offsets an impact moment applied to the arm that is subjected to an impact.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: February 10, 2015
    Assignee: Samsung Techwin Co., Ltd.
    Inventors: Ji-hyuk Song, Rickey Newmayer, Jong-yoon Peck
  • Publication number: 20150034399
    Abstract: The subject matter of the present invention relates generally to a vehicle that has axles with tires mounted thereon with at least one axle that is a lift axle, and more specifically, to a method that optimizes the effective tire rolling resistance by adjusting the load on the tires, resulting in an improvement in the fuel economy of the vehicle. According to one embodiment, the method takes into consideration the rolling resistance characteristics of the tires placed onto the axles of the vehicle and provides an algorithm for optimizing their rolling resistance by raising or lowering the lift axle.
    Type: Application
    Filed: February 10, 2012
    Publication date: February 5, 2015
    Inventors: William Bennett Clayton, Calvin Rhett Bradley
  • Patent number: 8925946
    Abstract: A vehicle (3) comprising at least two axles (6, 7, 8) fitted with at least two tires the axis of rotation of which are always mutually parallel from one axle to another. Each axle (6, 7, 8) bears at least 10% of the load of the vehicle and at least two axles (6, 7, 8) bear different loads during running. Also disclosed is a method for distributing the load between said at least two axles.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: January 6, 2015
    Assignees: Michelin Recherche et Techniques S.A., Compagne Generale des Establissements Michelin
    Inventors: Loic Albert, Fabien Marlier, Philippe Mansuy
  • Publication number: 20140326522
    Abstract: A seated vehicle comprises a frame, one or more first wheels at a first position relative to the frame, one or more second wheels at a second position relative to the frame, and a wheel-positioning system. The wheel-positioning system includes one or more arms pivotally coupled to the frame, and an adjustment mechanism operatively coupled to a first position of the one or more arms. The one or more first wheels are operatively coupled to a second position of the one or more arms. The adjustment mechanism moves the one or more arms between a first position and a second position so that the one or more first wheels are in a first position relative to the one or more second wheels when the one or more arms are in the first position and are in a second position relative to the one or more second wheels when the one or more arms are in the second position.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Inventors: Balz Maurer, Fabian Wolter
  • Patent number: 8814184
    Abstract: An axle-lifting device for lifting an axle of a vehicle. The axle-lifting device includes a function mechanism for generating a force component in an axle-lifting direction. The function mechanism is configured to generate a first force component for providing a first functionality and a second force component for lifting the axle in the axle-lifting direction.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: August 26, 2014
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Thomas Naber
  • Patent number: 8789632
    Abstract: A seated vehicle comprises a frame, one or more first wheels at a first position relative to the frame, one or more second wheels at a second position relative to the frame, and a wheel-positioning system. The wheel-positioning system includes one or more arms pivotally coupled to the frame, and an adjustment mechanism operatively coupled to a first position of the one or more arms. The one or more first wheels are operatively coupled to a second position of the one or more arms. The adjustment mechanism moves the one or more arms between a first position and a second position so that the one or more first wheels are in a first position relative to the one or more second wheels when the one or more arms are in the first position and are in a second position relative to the one or more second wheels when the one or more arms are in the second position.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: July 29, 2014
    Assignee: Dane Technologies, Inc.
    Inventors: Balz Maurer, Fabian Wolter
  • Patent number: 8776917
    Abstract: The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: July 15, 2014
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Abdelhafid Bouhraoua, Nesar Merah, Jaseem Al-Muaybid, Abduljabar Al Sayoud, Ayman Al-Darweesh, Jawad J. Al-Dawoud
  • Patent number: 8752659
    Abstract: A drive unit for a carrier that includes a chassis with a drive wheel that is pivotable with an air spring in and out of contact with a surface over which the carrier is propelled. The air spring is in a pneumatic system including an air compressor which is connected to a processor in an electrical system. The compressor is programmed to provide a fair safe mode for the drive wheel, a runtime control for the air compressor and a battery voltage sensing circuit to shut down the electrical system during periods of inactivity.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: June 17, 2014
    Inventors: Thomas E. Lenkman, David C. Massey
  • Patent number: 8702108
    Abstract: A vehicle having a multiple of level compensation systems is disclosed. The vehicle comprising a chassis having a left frame, a right frame and a base plate, a first level compensation system comprising a pivot joint for pivotably connecting the left and right frames to the base plate around a common rotational axis. A first axial distance from a left rotation axis of a left wheel pair to the rotational axis is different from at least one second axial distance from a right rotation axis of a right wheel pair to the rotational axis, such that the left and right wheel pair have at least one off-set to each other. Moreover a method for traversing stairs with such vehicle is disclosed.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: April 22, 2014
    Assignee: Zoomability AB
    Inventors: Karri Zanderléhn, Mikael Löfstrand
  • Patent number: 8641062
    Abstract: A lift axle suspension system is provided with a frame bracket member connectable to a vehicle frame, an upper control arm, and a lower control arm. Each control arm has a first end and a second end, with the first end of each control arm being pivotally connected to the frame bracket member. The suspension system also includes an axle connecting member connectable to an axle, with the second end of each control arm being pivotally connected to the axle connecting member. A compression coil spring having a first end connected to the lower control arm and a second end connected to the upper control arm serves as a lift mechanism for lifting and lowering the axle connected to the axle connecting member. The compression coil spring may encircle at least a portion of and be substantially coaxial with the lower control arm.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: February 4, 2014
    Assignee: Hendrickson USA, L.L.C.
    Inventor: Michael J. Gottschalk
  • Patent number: 8640806
    Abstract: A transport means (1) comprising: —at least two wheels (2), —a chassis (3) with a longitudinal axis, which is substantially parallel to a direction of travel of the transport means (1), and —at least one suspension system (4) operationally positioned between the chassis (3) and the wheels (2), wherein each wheel (2) has a wheel rotation axis (5), which is substantially horizontal, wherein the suspension system (4) includes a connection means (22) that interact releasably with a connection means (23) on the chassis (3), and wherein the suspension system (4) has a first orientation, wherein the suspension system (4) has at least one other orientation which is rotated in relation to the first orientation about a suspension rotation axis (6), which is substantially horizontal and perpendicular to the longitudinal axis of the chassis (3).
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: February 4, 2014
    Assignee: Ecomove ApS
    Inventors: Rasmus Worup, Mikkel Steen Pedersen
  • Publication number: 20130341106
    Abstract: The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: ABDELHAFID BOUHRAOUA, NESAR MERAH, JASEEM AL-MUAYBID, ABDULJABAR AL SAYOUD, AYMAN AL-DARWEESH, JAWAD J. AL-DAWOUD
  • Patent number: 8596388
    Abstract: The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 3, 2013
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Abdelhafid Bouhraoua, Nesar Merah, Jaseem Al-Muaybid, Abduljabar Al Sayoud, Ayman Al-Darweesh, Jawad J. Al-Dawoud
  • Publication number: 20130248261
    Abstract: A seated vehicle comprises a frame, one or more first wheels at a first position relative to the frame, one or more second wheels at a second position relative to the frame, and a wheel-positioning system. The wheel-positioning system includes one or more arms pivotally coupled to the frame, and an adjustment mechanism operatively coupled to a first position of the one or more arms. The one or more first wheels are operatively coupled to a second position of the one or more arms. The adjustment mechanism moves the one or more arms between a first position and a second position so that the one or more first wheels are in a first position relative to the one or more second wheels when the one or more arms are in the first position and are in a second position relative to the one or more second wheels when the one or more arms are in the second position.
    Type: Application
    Filed: September 20, 2012
    Publication date: September 26, 2013
    Applicant: DANE TECHNOLOGIES, INC.
    Inventors: Balz Maurer, Babian Wolter
  • Patent number: 8523202
    Abstract: A suspension system is disclosed that suspends a trailing axle with steerable wheels from the tailgate of a motor vehicle with the use of a carriage, a pair of actuators and gas springs. The carriage is pivotally connected to the tailgate, the axle is directly suspended from the carriage and the actuators are pivotally connected to the carriage and tailgate and adapted to establish the carriage and thereby the axle in a stowed condition on the tailgate and in an active condition where the axle trails the vehicle at a substantial distance and the actuators are connected to the tailgate so as to contribute in an enhanced manner to the roll stability of the vehicle.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 3, 2013
    Inventors: Brooks Strong, Joshua Cayne Fisher
  • Patent number: 8523203
    Abstract: A suspension system is disclosed that suspends a trailing axle with steerable wheels from the body of a motor vehicle with a carriage and a pair of actuators. The axle is directly suspended from the carriage and the actuators operate to establish the carriage and thereby the axle in a stowed condition on the vehicle body and in an active condition where the axle trails the vehicle at a substantial distance and is forced by the actuators to help support the vehicle.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: September 3, 2013
    Inventors: Brooks Strong, Joshua Cayne Fisher
  • Patent number: 8485538
    Abstract: An auxiliary axle suspension system for a motor vehicle is disclosed wherein a pair of hydraulically operated actuators position and force the auxiliary axle to help support the vehicle. And gas springs are provided that allow the actuators to extend and retract over a wide range of hydraulic operating pressure and thereby allow the auxiliary axle to adjust to a wide range of road grade differences between the auxiliary axle wheels and the wheels of the axles that normally support the vehicle without incurring significant gas and hydraulic pressure fluctuation and while isolating shock forces on the auxiliary axle wheels from the vehicle.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: July 16, 2013
    Inventors: Brooks Strong, Joshua Cayne Fisher
  • Patent number: 8418787
    Abstract: The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: April 16, 2013
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Abdelhafid Bouhraoua, Nehar Merah, Jaseem Al-Muaybid, Abduljabar Al Sayoud, Ayman Al-Darweesh, Jawad J. Al-Dawoud
  • Patent number: 8408343
    Abstract: A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives are transversely mounted. The batteries are disposed rearward of the drives. The wheelchair seat can be moved forward to provide access to the batteries without fully removing the wheelchair from the frame.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: April 2, 2013
    Assignee: Pride Mobility Products Corporation
    Inventors: John Puskar-Pasewicz, Kip D. Alder
  • Patent number: 8376077
    Abstract: A vehicle (10) comprising a vehicle body, a suspension system coupled to the vehicle body, and a plurality of wheels (16) coupled to the suspension system comprising at least one pair of wheels, each wheel of the at least one pair of wheels being located on opposite sides of the vehicle. The suspension system comprises a changeable wheel track width for the at least one pair of wheels and the wheel track width is changeable between a narrow wheel track width setting (12) and a wide wheel track width setting (14) by pivoting a suspension link (18) about a vertical axis.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: February 19, 2013
    Assignee: Oshkosh Corporation
    Inventor: Roy Venton-Walters
  • Patent number: 8292010
    Abstract: A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives are transversely mounted. The batteries are disposed rearward of the drives. The wheelchair seat can be moved forward to provide access to the batteries without fully removing the wheelchair from the frame.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: October 23, 2012
    Assignee: Pride Mobility Products Corporation
    Inventors: John Puskar-Pasewicz, Kip D. Alder
  • Patent number: 8286738
    Abstract: A wheel set structure of an electric wheelchair is disclosed to include a wheelchair frame, which defines a first steering direction and a second steering direction reversed to the first steering direction, at least one swinging mechanism pivotally mounted on the wheelchair frame each having a swinging member and a wheel holder, at least one transmission wheel assembly connected to the swinging member each having a motor and a driving wheel coupled to and rotatable by the motor, and at least one first wheel assembly mounted on the wheel holder each pivotally holding a wheel. When the at least one swinging member is biased relative to the at least one wheelchair frame, the at least one first wheel assembly is biased with the at least one swinging member so that the elevation of the wheel of each first wheel assembly and the elevation of the driving wheel of each transmission wheel assembly are relatively changed at a constant ratio.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: October 16, 2012
    Assignee: Merits Health Products Co., Ltd.
    Inventor: Ming-Chuan Cheng
  • Patent number: 7931285
    Abstract: The present invention provides a tag axle attachment for an off-road agricultural vehicle. The tag axle attachment allows agricultural vehicles to meet roadway weight restrictions imposed by the federal and state governments while also allowing the vehicle to perform optimally in the field. The tag axle is assembled such that it can be hydraulically lowered into a deployed position when the agricultural vehicle is on the roadway and hydraulically raised into a stowed position when the agricultural vehicle is in the field. The tag axle assembly is mounted to the chassis rails of an agricultural vehicle and positioned to fit between the chassis rails when stowed and minimizes the load per axle of the vehicle when deployed.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: April 26, 2011
    Assignee: AGCO Corporation
    Inventors: John Pompa, Jared Anderson, Jeremy Jacobus
  • Patent number: 7918468
    Abstract: The present invention is a drop-down extra axle and wheel set for a utility truck. The extra axle and wheels are pivotally connected to an extra frame set that overlies and/or extends along the original frame for the truck, from the back end of the truck frame to near its midpoint just behind the cab of the truck. The extra frame set is a generally horizontal, rectangular piece that lays over the top of, and/or extends along, from the back end of to just behind the cab of, the original truck frame. The extra frame set has a trailing, extra, axle support assembly near its back end. The extra axle support assembly depends down from the extra frame, and supports an extra axle and wheel set at its bottom. A set of pivoting connecting rods extend forwardly from the bottom of the extra axle support assembly to pivot brackets which also depend down from the extra frame several feet forward of the extra axle support assembly.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 5, 2011
    Inventors: Neil Justesen, Arlan Woodridge, Ryan Pearson, Larry Carter
  • Patent number: 7775533
    Abstract: A payload-carrying motor vehicle comprises a steer axle, at least one drive axle and a tag axle. All of the axles have wheels with tires and air brakes and a tag axle suspension system is adapted to suspend the tag axle in an active condition wherein the tag axle is pivotal about a first axis parallel to the other axles and also about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and wherein the tag axle is forced to urge the tag axle tires against a road surface to aid in supporting the vehicle. An air brake system is adapted to operate the air brakes of all the wheels and a tag axle operating system is adapted to establish the tag axle in the active condition while enabling operation of the air brakes of the tag axle wheels and to disable operation of the air brakes of the tag axle wheels when the tag axle pivots about the second axis and reaches a predetermined tilt angle in maintaining contact of the tag axle tires with a road surface.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 17, 2010
    Inventor: Brooks Strong
  • Patent number: 7775308
    Abstract: A payload-carrying motor vehicle comprises a frame, a steer axle, tandem drive axles, at least one pusher axle located between the steer axle and drive axles, and a tag axle. A steer axle suspension system suspends the steer axle from the frame, a drive axle suspension system suspends the drive axles from the frame, a pusher axle suspension system including gas springs suspends the pusher axle from the frame, and a tag axle suspension system including a primary tag axle suspension and a secondary tag axle suspension suspends the tag axle from the frame behind the drive axles. The primary tag axle suspension suspends the tag axle for pivotal movement about an axis parallel to the other axles and includes actuators incorporating a gas spring forcing the tag axle tires against a road surface to aid in supporting the frame.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 17, 2010
    Inventor: Brooks Strong
  • Patent number: 7766106
    Abstract: A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives are transversely mounted. The batteries are disposed rearward of the drives. The wheelchair seat can be moved forward to provide access to the batteries without fully removing the wheelchair from the frame.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: August 3, 2010
    Assignee: Pride Mobility Products Corporation
    Inventors: John Puskar-Pasewicz, Kip D. Alder
  • Patent number: 7731208
    Abstract: A tag axle operating system comprises a gas circuit with gas at a prescribed pressure and a hydraulic circuit that delivers hydraulic fluid pressure to raise and establish the tag axle in an inactive condition and to lower and establish the tag axle in an active condition. The hydraulic circuit establishes a prescribed hydraulic pressure opposing the gas pressure and a resulting force forcing the tag axle tires to bear against a road surface and the tag axle to accept a predetermined load. A brake valve allows air pressure delivery to operate tag axle air brakes while the prescribed hydraulic pressure is maintained and prevents such delivery to disable the brakes when the prescribed hydraulic pressure is relieved. And the hydraulic circuit operates to relieve the prescribed hydraulic pressure to relieve the force on the tag axle and disable the brakes when the tag axle experiences a predetermined tilt angle.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: June 8, 2010
    Inventor: Brooks Strong
  • Patent number: 7677339
    Abstract: An arrangement for a suspension for a load carrying vehicle is provided. The suspension is provided with air springs and comprises at least one front axle and at least two rear axles, and each rear axle is provided with at least one pair of corresponding suspension air springs and at least one air spring is provided for lifting one of the rear axles. The suspension air springs for at least the rearmost axle is connected to the air spring for lifting one of the rear axles by a conduit for compressed air, which conduit is provided with a controllable valve, whereby the controllable valve is arranged to open during a vehicle loading process. A vehicle provided with the arrangement, and a method for carrying out a loading operation using the arrangement, are also described.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: March 16, 2010
    Assignee: Volvo Lastvagnar AB
    Inventor: Christian Oscarsson
  • Patent number: 7635038
    Abstract: Presented is a heavy vehicle, such as a transport vehicle or civil engineering vehicle, of a mass greater than 500 metric tons configured to carry heavy loads and operable to generate a motive power. The vehicle includes tires of radial structure having a diameter greater than 3.5 meters and an axial width greater than 37 inches, a front steering axle coupled to at least two tires, at least one rear axle coupled to at least two tires and by which is transmitted at least part of the motive power, and a third, intermediate axle coupled to at least two tires. The intermediate axle is a steering axle and is moveable to a raised position. When the intermediate axle is in the raised position, the tires coupled to the intermediate axle are not in contact with the ground.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: December 22, 2009
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Jean-Marc Chamaillard, Pierre Durif
  • Publication number: 20090205885
    Abstract: A payload-carrying motor vehicle comprises a steer axle, at least one drive axle and a tag axle. All of the axles have wheels with tires and brakes and a tag axle suspension system is adapted to suspend the tag axle in an active condition wherein the tag axle is pivotal about a first axis parallel to the other axles and also about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and wherein the tag axle trails the drive axle and is forced to urge the tag axle tires against a road surface to aid in supporting the vehicle. A tag axle operating system is adapted to establish the tag axle in the active condition and relieve the force on the tag axle when the tag axle pivots about the second axis and reaches a predetermined tilt angle in maintaining contact of the tag axle tires with a road surface.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Inventor: Brooks Strong
  • Publication number: 20090205883
    Abstract: A payload-carrying motor vehicle comprises a steer axle, at least one drive axle and a tag axle. All of the axles have wheels with tires and air brakes and a tag axle suspension system is adapted to suspend the tag axle in an active condition wherein the tag axle is pivotal about a first axis parallel to the other axles and also about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and wherein the tag axle is forced to urge the tag axle tires against a road surface to aid in supporting the vehicle. An air brake system is adapted to operate the air brakes of all the wheels and a tag axle operating system is adapted to establish the tag axle in the active condition while enabling operation of the air brakes of the tag axle wheels and to disable operation of the air brakes of the tag axle wheels when the tag axle pivots about the second axis and reaches a predetermined tilt angle in maintaining contact of the tag axle tires with a road surface.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Inventor: Brooks Strong
  • Publication number: 20090205884
    Abstract: A payload-carrying motor vehicle comprises a frame, a steer axle, tandem drive axles, at least one pusher axle located between the steer axle and drive axles, and a tag axle. The axles each have wheels with tires and a steer axle suspension system suspends the steer axle from the frame, a drive axle suspension system suspends the drive axles from the frame, a pusher axle suspension system including gas springs suspends the pusher axle from the frame, and a tag axle suspension system including a primary tag axle suspension and a secondary tag axle suspension suspends the tag axle from the frame behind the drive axles.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Inventor: Brooks Strong
  • Patent number: 7549492
    Abstract: A trailing arm suspension unit for use on a vehicle including a ring bearing, a trailing arm, a spring and damper for providing large vertical wheel travel in a jounce and rebound suspension condition. The ring bearing may include external threads for rotationally connecting the trailing arm to a mounting plate or a hull of the vehicle. Further, supply lines for electrical and fluids may be passed through the opening in the ring bearings without the use of a slip ring and passed through a passage in the trailing arm to a wheel on the vehicle. The spring and damper may be located on top of the trailing arm and separately connected to the mounting plate to generate significant mechanical advantage. The geometry of the spring, damper, and trailing arm allow the spring in the suspension unit to be gas cylinder employing air.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: June 23, 2009
    Assignee: General DYnamics Land Systems
    Inventor: James Pond