Motorized Wheelchairs Patents (Class 180/907)
  • Patent number: 10182956
    Abstract: A transport apparatus includes a base, a sling, and a support frame mounted to the base. The frame is configured to move from a first position relative to the base to a second position relative to the base. The frame includes a U-shaped frame with a lower cross-frame member and vertically oriented spaced side frame members joined with the cross-frame member. The side frame members support arm rests, and the cross-frame member optionally forms a footrest. In another aspect, the frame includes an access opening to allow a person egress and ingress to and from the sling through the frame.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 22, 2019
    Assignee: Stryker Corporation
    Inventors: Martin W. Stryker, Jason James Wroblewski
  • Patent number: 10028871
    Abstract: A method for electrically assisting with the propulsion of a rolling system comprising a driving wheel driven by an electric motor, the torque applied by the motor being a function of a propulsion torque transmitted by a user to the driving wheel, wherein the method comprises: a preliminary step of storing in memory an unknown input model representing the weighted system, which is a function of the geometry and of the mass of the weighted system, and having as output data the rotational speed of the driving wheel; a step of estimating unknown input being the total torque applied to the wheel, influencing the rotational speed, the total torque being estimated from the rotational speed by calculating the inverse model; the propulsion torque transmitted by the user being deduced from the total torque estimated on the basis of the other known torques that make up the total torque.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: July 24, 2018
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Université de Valenciennes et du Hainaut Cambresis
    Inventors: Sami Mohammad, Thierry-Marie Guerra, Philippe Pudlo
  • Patent number: 9944167
    Abstract: A system, method, and device for operations of an electrically motorized vehicle. The vehicle can utilize an electrically motorized wheel to convert a non-motorized wheeled vehicle to an electrically motorized wheeled vehicle. The electrically motorized wheeled vehicle includes a plurality of electrically motorized wheels, each of the plurality of electrically motorized wheels in communication with at least one other of the plurality of electrically motorized wheels to coordinate operation of the vehicle.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: April 17, 2018
    Assignee: Superpedestrian, Inc.
    Inventors: Assaf Biderman, Jon Stevens, John David Heinzmann
  • Patent number: 9944314
    Abstract: A steering assist system for a vehicle comprises a steering assist module configured to determine a baseline assistance force to be applied to a steering system of the vehicle, and a transient disturbance compensation module configured to determine a transient compensation force to compensate for transient conditions that urge the vehicle to deviate from a straight path. The transient compensation force is based at least partially on the determined baseline assistance force. The system also includes a steady-state disturbance compensation module configured to determine a steady-state compensation force to compensate for steady-state conditions that urge the vehicle to deviate from the straight path, the steady-state compensation force being based at least partially on the determined baseline assistance force. Methods relate to controlling steering systems.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: April 17, 2018
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Joseph M. Raad, Sergio Trimboli
  • Patent number: 9872804
    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: April 7, 2016
    Date of Patent: January 23, 2018
    Assignee: Pride Mobility Products Corporation
    Inventors: John Puskar-Pasewicz, Kip D. Alder
  • Patent number: 9849050
    Abstract: A wheelchair lift assembly includes a wheelchair. The wheelchair has a pair of seats and a frame. Each of the seats is hingedly coupled to the frame. Each of the seats is positionable in a stored position having each of the seats being horizontally oriented on the frame. Each of the seats is positionable in a lifted position having the each of the seats hinging upwardly from the upper front member. A lifting unit is coupled to the wheelchair. The lifting unit selectively urges each of the seats between the stored position and the lifted position. Thus, the lifting unit may lift a user thereby facilitating the user to exit the wheelchair.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 26, 2017
    Inventor: Judie McClean
  • Patent number: 9808383
    Abstract: Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters can selectively engage the arm assembly based on at least one of a seat position, position of the arm assembly and surface conditions of ground surface. The arm limiters can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: November 7, 2017
    Assignee: Pride Mobility Products Corporation
    Inventors: James P. Mulhern, Stephen J. Antonishak
  • Patent number: 9636265
    Abstract: A single passenger carrying mobile robot, includes a single operated member that is operated by a passenger to instruct both a moving direction and a moving speed of the passenger carrying mobile robot, a moving member configured to move the passenger carrying mobile robot and a controller configured to control the moving member based on input information input to the operated member by the passenger, wherein the passenger carrying mobile robot further includes a sensor that acquires obstacle information of a surrounding of the passenger carrying mobile robot, and the controller predicts an expected course of the passenger carrying mobile robot based on the input information and determines based on the obstacle information whether or not an obstacle is located in the expected course, and changes a control of the moving member when determining that the obstacle is located.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: May 2, 2017
    Assignees: Chiba Institute Of Technology, Aisin Seiki Kabushiki Kaisha
    Inventors: Takayuki Furuta, Masaharu Shimizu, Hideaki Yamato, Kengo Toda, Takashi Kodachi, Mitsuhiro Ando, Noboru Nagamine, Seongjun Yang, Hirotoshi Ochiai, Wataru Takayanagi
  • Patent number: 9566200
    Abstract: Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters that can selectively engage the arm assembly dependent on the position of the arm assembly and surface conditions of ground and can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: February 14, 2017
    Assignee: Pride Mobility Products Corporation
    Inventors: James P. Mulhern, Stephen J. Antonishak
  • Patent number: 9532912
    Abstract: A seat assembly for a conveyance, such as a wheelchair, that allows the user to set the recline angle of the seat back at a seating position, fold the seat back down to a folded position and back up to the seating position, such that the seat back is returned to the seating position at the user selected recline angle R unless the recline angle is adjusted by the user. The user selected recline angle R is not disturbed by folding the seat back from the seating position, to the folded position 106, and back to the seating position.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: January 3, 2017
    Assignee: Invacare Corporation
    Inventors: Howard Loewenthal, Traian Mohan, Robert Bekoscke, Damon Jurkiewicz, Daniel James Yee
  • Patent number: 9449142
    Abstract: A system and method for modeling supervisory control of heterogeneous unmanned vehicles through discrete event simulation is provided. Generally, the system contains a memory and a processor configured by the memory to perform the steps of: simulating events in the system; simulating arrival processes for the events in the system; simulating how long a human operator takes to respond to the simulated events in the system, where the time that the human operator takes to respond to a simulated event is referred to as a service time; and prioritizing the events to be handled by the human operator, wherein the system models human operator involvement in the unmanned vehicle system.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: September 20, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Mary Louise Cummings, Carl Elie Nehme
  • Patent number: 9351889
    Abstract: Embodiments of the present disclosure include a wheelchair configured to reposition an occupant between a lowered and a raised position. The wheelchair can include a frame, a seat moveable relative to the frame, a drive wheel, and one or more pairs of arm assemblies. The arm assembly includes a wheel configured to move from a first spatial location when the wheel chair is operating on flat, level ground to a second spatial location that is different than the first spatial location. Arm limiters can selectively engage the arm assembly based on at least one of a seat position, position of the arm assembly and surface conditions of ground surface. The arm limiters can limit the range of motion of the arm assembly and sometimes other operational aspects of the chair.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 31, 2016
    Assignee: Pride Mobility Products Corporation
    Inventors: James P. Mulhern, Stephen J. Antonishak
  • Patent number: 9033073
    Abstract: The invention provides a motorized portable mobility device configured expressly for use by those who have undergone leg amputation. A generally rectangular wheeled base platform with a U shaped niche positioned on the rear of the device easily traverses both carpeted and solid flooring. A circular rotating plate enables a user to quickly adjust directional positioning. Two feet and adjustable height legs terminating in integrated support socks are mounted to the rotating plate. Adjustable height vertical supports terminating in handles and having a horizontal cross member are mounted to the front of the device. A control panel is mounted to a handle.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: May 19, 2015
    Inventors: Ninfa Garcia, Wilfredo Garcia
  • Patent number: 9016715
    Abstract: A mobility device for people who need assisted mobility comprising side support structures for supporting the weight of an occupant in a semi seated position, a back rest structure, a shin rest structure and an arm rest structure. The mobility device of the present invention provides a rear access which is feasible by moving outwardly and upwardly the side support structures.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Rideup Mobility Inc.
    Inventor: Michael Moliner
  • Patent number: 9010470
    Abstract: Wheeled vehicles, such as wheelchairs, that are adapted to traverse obstacles are provided. The wheeled vehicles include a frame, drive wheels, front anti-tip wheels positioned in front of the drive wheels and rear anti-tip wheels positioned behind the drive wheels. One exemplary vehicle includes front anti-tip wheels supported by rigid arms that are fixed to the frame and drive assemblies that are independently suspended from the frame. Another exemplary vehicle includes a linkage that links the front and rear anti-tip wheels, such that movement of one of the front or rear anti-tip wheel relative to the frame causes movement of the other wheel relative to the frame.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 21, 2015
    Assignee: Invacare Corporation
    Inventors: Robert L. Cuson, Robert A. Bekoscke, Daniel J. Strothard
  • Patent number: 8925943
    Abstract: A wheelchair includes a frame, a rear caster coupled to the frame, a drive wheel coupled to the frame, a front caster, and a pivoting assembly. The pivoting assembly couples the front caster to the frame such that upward movement of the front caster relative to the frame causes the front caster to move toward the drive wheel.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: January 6, 2015
    Assignee: Invacare Corp.
    Inventor: James H. Molnar
  • Patent number: 8910975
    Abstract: Embodiments of a suspension for a vehicle is provided. The suspension includes, for example, a frame and a locking assembly. The locking assembly inhibits tipping of a frame of the vehicle when tipping of the frame is detected.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: December 16, 2014
    Assignee: Invacare Corporation
    Inventors: Robert Bekoscke, Damon Jurkiewicz, Gerald Fought
  • Patent number: 8851214
    Abstract: A wheelchair of the mid-wheel drive type comprises a chassis frame (10), a pair of front link arms (30) and a pair of rear link arms. The link arms are pivotally connected to the chassis frame. Front caster wheels (32) and drive wheels (53) are fixed to the front link arms. Rear caster wheels (42) are fixed to the rear link arms. Each front link arm (30) is operatively connected to an adjacent rear link arm (40) by a respective coupling (70), which is arranged to transmit pivotal movement of one of the front (30) and rear (40) link arm to an opposite pivotal movement of the other of the front (30) and rear (40) link arm.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 7, 2014
    Assignee: Permobil AB
    Inventor: Mehdi Mirzaie
  • Patent number: 8833774
    Abstract: A wheelchair suspension comprises a frame, at least one pivot arm, at least one front caster, at least one rear caster, a stabilizing system, and a sensor. The pivot arm is coupled to the frame. The front caster is coupled to the pivot arm. The rear caster is coupled to the frame. The stabilizing system is coupled to the frame and the pivot arm. The sensor is arranged such that tipping of the frame causes actuation of the stabilizing system to at least partially resist further movement of the frame.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: September 16, 2014
    Assignee: Invacare Corporation
    Inventors: Gerold Goertzen, William A. Null, Robert L. Cuson
  • Patent number: 8820454
    Abstract: A motorized wheelchair includes a frame, a battery support assembly that supports a battery box and is connected to the frame, first and second power drive assemblies disposed on each lateral side of the wheelchair, first and second rear wheels driven by the power drive assemblies, and first and second castor wheels that are pivotally connected to said frame. The battery support assembly is pivotally connected to the frame by a first connecting arrangement, so that said battery support assembly can pivot around a first longitudinal axis. The battery support assembly is pivotally connected to the first connecting arrangement by a second connecting arrangement, so that the battery support assembly can pivot around a second lateral axis.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: September 2, 2014
    Assignee: Invacare International SARL
    Inventors: Peter Jost, Ralf Ritter
  • Patent number: 8814196
    Abstract: A shower assistance scooter device supports a person in a bathing facility. The device includes a base and a seat coupled to and extending upwardly from the base. The seat is rotationally coupled to the base. A handle assembly is coupled to the base and positioned adjacent to a front side of the base. The handle assembly is rotatable relative to the base. A plurality of wheels is coupled to the base including at least one drive wheel and a directional wheel coupled to the handle assembly for steering the device. A first front foot rest is coupled to the base adjacent to a front side of the base. The base, seat, handle assembly, wheels, and first front foot rest are each water resistant to support a person in a bathing facility while the person bathes.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: August 26, 2014
    Inventor: Steven K. Poggenpohl
  • Patent number: 8794359
    Abstract: A suspension for a vehicle is provided. The suspension includes, for example, a frame, at least one drive assembly and at least one caster pivot arm. The at least one drive assembly and the at least one caster pivot arm are pivotally connected to the frame at a common pivot axis such that the drive assembly and the front caster pivot arm are pivotable relative to one another.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: August 5, 2014
    Assignee: Invacare Corporation
    Inventors: Robert Bekoscke, Damon Jurkiewicz
  • Patent number: 8793032
    Abstract: A method and apparatus for setting or modifying a programmable operating parameter associated with a power driven wheelchair is provided. In one embodiment, the method includes: a) operating a user interface device associated with a power driven wheelchair in a programming mode, b) selecting a programmable operating parameter associated with operation of the power driven wheelchair using the user interface device, c) selecting a value for the programmable operating parameter using the user interface device, and d) saving the selected value for the programmable operating parameter in a portion of a storage device associated with the power driven wheelchair using the user interface device. A method and apparatus for selecting one or more programmable parameter sets from a portable storage medium and saving the selected sets to a local storage device associated with a power driven wheelchair and vice versa is also provided.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: July 29, 2014
    Assignee: Invacare Corporation
    Inventors: Darryl Peters, Bruce A. Jaenke, Carrie L. Burke, Gary E. Chopcinski
  • Patent number: 8789628
    Abstract: A multi-terrain motorized wheelchair apparatus is disclosed that comprises a seating assembly for supporting a user in a seated position, a track assembly with the seating assembly being pivotable with respect to the track assembly. The track assembly includes a pair of track units positioned on opposite sides of the seating assembly. The apparatus comprises a seating orientation adjustment assembly configured to adjust an orientation of the seating assembly with respect to the track assembly. The apparatus includes at least one drive assembly mounted on the seating assembly and which has at least one drive shaft structure connected to the track units to drive the track units. The seating assembly is supported on the track units of the track assembly by the drive shaft structure.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: July 29, 2014
    Inventor: Timmy R. Swenson
  • Patent number: 8790284
    Abstract: A wheelchair type robot for use as a walking aid wherein an outer skeleton to be worn on the lower body of a user is combined with a lift and a drive part in a wheelchair form. The drive part is furnished with a drive motor and wheels that are installed on a main frame. The lift is furnished with an outer linear guide that is fixed and joined with the main frame, an inner linear guide that can move up and down along same, an upper chair part that connects with the inner linear guide to enable up and down motion, and a lower chair part that connects with the outer linear guide such that unfolds if the inner linear guide descends and folds if it ascends.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: July 29, 2014
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Do Young Jeon, Hyo Sang Moon, Sin Ung Kwak, Jin Hwan Lee
  • Patent number: 8777251
    Abstract: In one embodiment, the present invention is directed to a controller for a wheelchair. The controller includes a joystick for controlling the speed and direction of the wheelchair. A housing of the controller has a top surface and a bottom surface. The top surface has a weight bearing portion configured to support a user's weight when the user places at least a portion of his or her hand on the weight bearing portion to facilitate entering or exiting the wheelchair.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: July 15, 2014
    Assignee: Invacare Corporation
    Inventor: Damon Jurkiewicz
  • Patent number: 8740240
    Abstract: A user-operated mobility apparatus includes a base unit having a drive assembly and wheels mounted thereto for enabling selective movement of the base unit along a surface. A plurality of support members extend from the base unit, define an interior area therebetween that is configured to receive a user, and each includes a plurality of spaced-apart engagement features for releasably engaging at least one accessory at various different positions along the support member. A user support assembly is mounted adjacent the free ends of the support members and includes a support cord extending into the interior area. The support cord is configured for releasably engaging a user to support the user within interior area.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 3, 2014
    Inventor: Maynard I. Merel
  • Patent number: 8727048
    Abstract: A conveyance such as a wheelchair that includes a seat assembly and a chassis. The chassis comprises a central frame member disposed substantially along the centerline of the wheelchair. The central frame member includes portions for connecting to or supporting one or more front casters, a seat assembly, one or more drive wheel assemblies, an energy source (e.g., one or more batteries), rear anti-tip wheels, and/or at least one footplate. The central frame member is disposed substantially along the centerline of the wheelchair and structurally distributes of the weight of the seat assembly (and optionally the weight of the energy source) to the supporting drive wheels and casters. In this manner, a clean-looking, simple, and lightweight chassis structure is provided for a conveyance.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: May 20, 2014
    Assignee: Invacare Corp.
    Inventors: Damon Jurkiewicz, Joshua Greiner, Daniel James Yee, Daniel Watson, Traian Mohan, Robert Bekoscke
  • Patent number: 8731754
    Abstract: A controller for a motorised vehicle is provided which is arranged to receive control signals from a user input device and the controller is configured to control a motor arrangement of the motorised vehicle in dependence on the control signals. The controller comprises an acceleration control unit configured to determine a centripetal force factor corresponding to a centripetal force which is currently acting on said motorised vehicle as a result of the control signals and is configured to calculate an acceleration limit for the motorised vehicle in dependence on the centripetal force factor. The acceleration control unit is configured to apply the acceleration limit by modifying a response of the controller to the control signals, such that the motorised vehicle does not exceed the acceleration limit.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 20, 2014
    Assignee: Penny & Giles Controls Limited
    Inventor: Matthew John Trowell
  • Patent number: 8678114
    Abstract: A power wheelchair with guard for playing sports for eliminating G-Force effects and improving safety. The power wheelchair with guard for playing sports includes a frame assembly; a mobility system including drive wheels and casters upon which the frame assembly is mounted and also including a motor and a power control module for actuating the drive wheels; a seat assembly being secured to the frame assembly and including a seat support member and a seat; and a guard assembly being attached to the frame assembly and extending forwardly thereof.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: March 25, 2014
    Inventor: Brian K. Akre
  • Patent number: 8657320
    Abstract: A sensor arrangement for a wheelchair wheel that has a running wheel with a hub and a hand rim includes a running wheel fastening arrangement that is fastened to the running wheel, a hand rim fastening arrangement that is fastened to the hand rim and at least one sensor that detects a movement of the hand rim fastening arrangement relative to the running wheel fastening arrangement. Two restoring elements are provided on the running wheel fastening arrangement and rest against the hand rim arrangement with a prestressing force at least in the zero position. Both restoring elements rest against at least one stop of the running wheel fastening arrangement in the zero position of the sensor arrangement.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: February 25, 2014
    Assignee: AAT Alber Antriebstechnik GmbH
    Inventor: Markus Alber
  • Patent number: 8636089
    Abstract: A wheelchair suspension is provided. The wheelchair suspension includes a frame, a front caster pivot arm, a drive assembly, and a rear caster. The front caster pivot arm is pivotally connected to the frame. The front caster is coupled to a front end of the front caster pivot arm. The drive assembly is pivotally connected to the front caster pivot arm. The drive assembly comprises a drive wheel and a motor that drives the drive wheel. Torquing of the drive wheel by the motor in a forward direction causes the drive assembly to pivot with respect to the front caster pivot arm such that the drive wheel moves forward toward the front caster and a distance between a support surface and the connection between of the drive assembly and the front caster pivot arm increases.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: January 28, 2014
    Assignee: Invacare Corporation
    Inventors: Gerold Goertzen, William A. Null
  • Patent number: 8622160
    Abstract: A universal steering and charger system is disclosed for a dual motor vehicle comprising a socket having socket terminals. A coupling defines a socket insert having socket insert terminals. A sensor is connected to the socket insert terminals with a hand control enabling an operator to manipulate the sensor. The socket insert is receivable within the socket for electrically connecting the socket insert to the socket. A motor drive control is connected to the socket for powering the first and second motors from a storage battery for steering the dual motor vehicle. A mast has mast terminals connected to a low voltage power source. The coupling is removable from the socket for enabling insertion of the mast into the socket for charging the storage battery. A plurality of sockets may be mounted at multiple location on the dual motor vehicle for steering the dual motor vehicle from multiple locations on the dual motor vehicle.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: January 7, 2014
    Assignee: Flowers IP LLC
    Inventor: Michael J. Flowers
  • Patent number: 8622166
    Abstract: The present invention provides a universal single switch driving system for power wheelchairs, which can be attached to any wheelchair joystick and remotely controlled, by any single switch available for persons with disabilities.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 7, 2014
    Assignee: University of Puerto Rico
    Inventors: Raul Edmir Torres-Muniz, Sergio E. Garcia-Vegara, Baldin Lorens-Bonilla, Daphne Sanchez-Cordero, Mauricio Lizama
  • Patent number: 8616309
    Abstract: A front wheel drive powered wheelchair is provided and may include a support frame, a pair of opposing drive wheels, a pair of drives, and a pair of rear wheels. The frame may include a front portion, a seat post, and two independent arms extending rearward from the front portion. Each drive wheel may be coupled to the front portion of the frame. Each drive may be mounted to the front portion of the frame and may be operatively connected to a respective drive wheel of the pair of drive wheels. Each rear wheel may be coupled to a respective independent arm of the support frame. Each independent arm may be capable of flexing independent of the other.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: December 31, 2013
    Assignee: Pride Mobility Products Corporation
    Inventors: Christopher Art, Gerald White, Matthew Tolan, Christopher Grymko
  • Patent number: 8602138
    Abstract: A wheelchair attachment for powering a wheelchair is described. An attachment for a conventional wheelchair converts a non-motorized wheelchair into a motorized wheelchair. The attachment may also act as an anti-tipping device.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: December 10, 2013
    Inventors: Paul Filkoski, Alan Warren
  • Patent number: 8594868
    Abstract: A personal electric motorized vehicle, a controller for controlling operation of the vehicle, and methods of controlling the vehicle are provided. The vehicle may include a weight determination device for determining a weight of an operator and a controller for controlling operation of the vehicle based on the weight of the operator. A method of controlling the vehicle may include determining a weight of an operator, communicating the weight to a controller, and controlling operation of the vehicle with the controller based on the weight of the operator.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: November 26, 2013
    Assignee: Control Solutions LLC
    Inventors: Roy Kell, Alyn Brown
  • Patent number: 8573341
    Abstract: The present invention provides a suspension for a conveyance that is capable of traversing obstacles and rough terrain. The suspension includes a frame, a pivot arm, a front caster, a drive assembly and a rear caster. The pivot arm and the drive assembly are coupled and decoupled based on movement of the drive assembly.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: November 5, 2013
    Assignee: Invacare Corporation
    Inventor: Gerald E. Fought
  • Patent number: 8561736
    Abstract: Wheelchairs in various embodiments include a variable-position drive system that can automatically move the drive wheels fore and aft through an approximately 41 cm range. Such a system provides all the benefits of front-, mid-, and rear-wheel drive configurations in a single wheelchair, for example, to adjust the drive wheels toward the rear for stability and speed outdoors and toward the center for maneuverability indoors. The performance-optimal placement of drive wheels often depends on the physical environment (e.g., terrain), on the combined center of mass of the wheelchair and user, and on the user's cognitive functioning, trunk stability, and driving skills. One disclosed embodiment includes a pair of mid-position drive wheels that can automatically be repositioned forward or backward to accommodate changes in terrain and center of mass, which will improve the power wheelchair's stability and maneuverability and, consequently, safety and ease of use in a wider range of scenarios.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: October 22, 2013
    Assignee: Rehabilitation Research of Evansville, Inc.
    Inventors: Richard L. Nelson, Robert M. Levy
  • Patent number: 8538599
    Abstract: A method and apparatus for setting or modifying a programmable operating parameter associated with a power driven wheelchair is provided. In one embodiment, the method includes: a) operating a user interface device associated with a power driven wheelchair in a programming mode, b) selecting a programmable operating parameter associated with operation of the power driven wheelchair using the user interface device, c) selecting a value for the programmable operating parameter using the user interface device, and d) saving the selected value for the programmable operating parameter in a portion of a storage device associated with the power driven wheelchair using the user interface device. A method and apparatus for selecting one or more programmable parameter sets from a portable storage medium and saving the selected sets to a local storage device associated with a power driven wheelchair and vice versa is also provided.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: September 17, 2013
    Assignee: Invacare Corporation
    Inventors: Darryl Peters, Bruce A. Jaenke, Carrie L. Burke, Gary E. Chopcinski
  • Patent number: 8534679
    Abstract: A wheelchair suspension comprises a frame, at least one pivot arm, at least one front caster, at least one rear caster, a stabilizing system, and a sensor. The pivot arm is coupled to the frame. The front caster is coupled to the pivot arm. The rear caster is coupled to the frame. The stabilizing system is coupled to the frame and the pivot arm. The sensor is arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: September 17, 2013
    Assignee: Invacare Corporation
    Inventors: Gerold Goertzen, William A. Null, Jr., Robert L. Cuson
  • Patent number: 8522907
    Abstract: Provided is a personal mobility device comprising a frame including two side structures. In one embodiment, main mobility wheels are coupled to ones of the side structures, the main mobility wheels configured to contact a surface upon which the mobility device is designed to move. In this embodiment, the mobility device further includes a knee rest rotatably coupleable to the frame, the knee rest being adjustable from a first substantially-vertical position to a second angled position, and further wherein the main mobility wheels are configured such that a kneeling occupant may propel the personal mobility device using the main mobility wheels.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: September 3, 2013
    Assignee: JGI Holdings, LLC
    Inventor: James Graham Irvine
  • Patent number: 8505657
    Abstract: The present invention pertains to a lightweight, portable, electric vehicle having a novel steering mechanism, a low profile suspension and drive mechanism, and which also provides a superior ride quality, handling, and drivability. The vehicle generally comprises a frame and at least one suspension and motor assembly. Each suspension and motor assembly includes at least one leaf spring mounted to the frame, a motor connected to the leaf spring, the motor having a drive shaft, and a wheel rotatably connected to the drive shaft. The vehicle also includes means for powering the motor and means for controlling to enable a user to drive the vehicle.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: August 13, 2013
    Inventor: Xiaolong Gong
  • Patent number: 8469383
    Abstract: A wheelchair includes a frame, and a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame. A rear pivot arm is pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the frame. A ground engaging mid-wheel drive wheel is connected to the frame. A linkage connects the front and rear pivot arms to each other in a manner such that an upward or downward rotation of one of the pivot arms about its pivot point causes rotation of the other pivot arm about its pivot point in an opposite rotational direction.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: June 25, 2013
    Assignee: Sunrise Medical (US) LLC
    Inventors: Daniel Z. Zhou, Mark A. Jackson, John J. Tarter, Mark E. Greig, Rex W. Stevens, James M. Koerlin, Samuel D. Traxinger, Allen B. Killebrew
  • Patent number: 8424627
    Abstract: A wheelchair including a seat body and at least one wheel module disposed at a bottom of the seat body is provided. The wheel module includes a motor, at least one wheel, and a transmission unit coupled between the motor and the wheel. The transmission unit has at least one one-way bearing. The motor outputs a first rotating moment and a second rotating moment with opposite directions to the transmission unit. The one-way bearing transmits one of the first rotating moment and the second rotating moment to the wheel to drive the wheel to roll, such that the seat body is in linear motion, or so the wheel module rotates relative to the seat body in the directions of the first or the second rotating moments. The shafts of the first and the second rotating moments are perpendicular to the rotating shaft of the wheel.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: April 23, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventors: Chung-Hsien Kuo, Wei-Chen Lee, Jyun-An Yao, Yan-Cheng Wang
  • Patent number: 8419130
    Abstract: The invention concerns a seat tilt apparatus (3) for an electric wheelchair, which wheelchair comprises a chassis (1) and a seat (2). The seat tilt apparatus comprises; a base member (11), which is fixable to the chassis and provided with at least one first guide slot (16); a seat supporting member (40) which is arranged to supportably receive the seat, movable in relation to the base member and guided by the first guide slot; and a linear drive means (17) which is connected to the base member and to the seat supporting member, for moving the seat supporting member along a motion path, in relation to the base member.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 16, 2013
    Assignee: Permobil AB
    Inventor: Hakan Bergman
  • Patent number: 8413749
    Abstract: An auxiliary drive assembly for wheelchairs is revealed. The auxiliary drive assembly includes a wired transmission member, at least one sensor, a control circuit and a drive unit. The wired transmission member is arranged at a wheel hub on a wheel. The sensor is set on the wheel for generating a sensing signal sent to the wired transmission member. The control circuit is coupled to the wired transmission member, receiving the sensing signal and generating a control signal. The drive unit is coupled to the control circuit and receiving the control signal so as to drive the wheel hub rotating and further move the wheel. Thereby the assembly is with simple structure and the environmental interference is minimized by wired signal transmission. The sensing signal is sent to the control circuit exactly and the drive unit is controlled to rotate the wheel precisely. The wired transmission reduces the cost.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: April 9, 2013
    Inventor: Hsiang-Ling Hsu
  • Patent number: 8408598
    Abstract: An anti-tip system is provided for improving the stability of a powered vehicle, such as a powered wheelchair. The vehicle includes a drive-train assembly pivotally mounted to a main structural frame. A suspension system biases the drive-train assembly and its connected anti-tip wheel to a predetermined resting position. The drive-train assembly bi-directionally rotates about a pivot in response to torque applied to or acceleration forces on the vehicle. A linkage arrangement is provided and is characterized by a suspension arm pivotally mounting to the main structural frame about a pivot at one end thereof and an anti-tip wheel at the other end. The linkage may further include at least one link operable to transfer the bi-directional displacement of the drive-train assembly to the suspension arm. The link may include a bell crank member and/or may be resiliently compressible.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 2, 2013
    Assignee: Pride Mobility Products Corporation
    Inventors: James P. Mulhern, Ronald Levi, Christopher E. Grymko
  • 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: RE45158
    Abstract: The invention relates to a control system for controlling a wheelchair having movable parts. The control system comprises a controller and a number of actuators for effectuating movements of the movable parts. The controller comprises a mathematical model of the kinematics of the movable parts and their respective at least one actuator, means for receiving an input signal from one or more of the actuators, and means for setting, based on the mathematical model, limiting positions of the actuators in response to the determined input signal. The invention also relates to a corresponding wheelchair and method of controlling a wheelchair.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 23, 2014
    Assignee: Permobil AB
    Inventor: Patrik Emilsson