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| Number | Title | Issue Date |
| 7407024 | Motorized traction device for a patient support A patient support including a traction device for powered movement of the patient support. The traction device includes a storage position and a use position. ... | 08/05/2008 |
| 7370876 | Wheelchair suspension A side frame assembly for a wheelchair suspension includes a mainframe, and a front caster frame connected pivotally to both a front end of the mainframe and a front caster. A return spring is disposed between the front caster frame and the mainframe so as to bias t... | 05/13/2008 |
| 7360792 | Power wheelchair A power wheelchair is capable of operating in either a two-wheel or a four-wheel drive configuration. The wheelchair includes first and second forward drive wheels in contact a supporting surface. First and second wheel support assemblies each include a support memb... | 04/22/2008 |
| 7314220 | Suspension system for a powered wheelchair A variable stiffness suspension system is provided for a wheelchair. The wheelchair has a frame and at least one wheel coupled to the frame for generally vertical movement relative to the frame. At least one sensor is provided for sensing an operating condition of t... | 01/01/2008 |
| 7311161 | Hospital bed having a drive wheel unit A hospital bed includes a carrier frame, a driven wheel unit disposed below the frame, a motor unit, a drive wheel unit disposed below the frame and coupled operably to the motor unit in such a manner that actuation of the motor unit results in rotation of the drive... | 12/25/2007 |
| 7275907 | Boat trailer tug The boat trailer tug includes a primary frame with a mounting beam that is attachable to a boat trailer frame. A primary collar is fixed to the mounting beam front end. A hitch tongue is connected to the collar and extends forward from the collar. A hitch ball recei... | 10/02/2007 |
| 7273115 | Control apparatus for a patient support A patient support including a traction device and a motor for moving the patient support. A motor disconnect arrangement is provided to enable manually powered movement of the patient support. ... | 09/25/2007 |
| 7263424 | Apparatus and method for controlling driving force supplied to wheels on opposite sides of vehicle An apparatus for controlling driving forces supplied to left and right wheels of a vehicle, for effectively inhibiting oversteer and understeer states, includes driving force adjusting device for adjusting driving forces supplied to the left and the right rear wheel... | 08/28/2007 |
| 7261176 | Articulated vehicle suspension system shoulder joint An articulated vehicle suspension system shoulder joint is disclosed. A vehicle includes a plurality of wheel assemblies; a plurality of rotating shoulder joints, each wheel assembly being mounted to a respective one of the shoulder joints and rotatable in a plane b... | 08/28/2007 |
| 7243747 | Trailer provided with manoeuvring device A trailer provided with a manoeuvring device. The manoeuvring device has a pivoting frame that can be moved with respect to the chassis of a trailer, such as a caravan, and is provided at the end with a roller driven by an electric motor. This roller does not engage... | 07/17/2007 |
| 7219924 | Rear wheel drive power wheelchair with ground-contacting anti-tip wheels A curb-climbing rear wheel drive power wheelchair is disclosed having a pair of drive wheels, at least one ground-engaging idler wheel connected to the frame forward of the drive wheels and at least one ground-contacting anti-tip caster wheel mounted to the wheelcha... | 05/22/2007 |
| 7216728 | Motorized apparatus for towing a wheelchair A motorized apparatus for towing a wheelchair includes a framework, a handle assembly, a motor driving assembly and a wheelchair connecting assembly. The framework includes a chassis. The handle assembly is adjustably mounted on the chassis. The motor driving assemb... | 05/15/2007 |
| 7201690 | Drive unit for vehicle A drive unit for a vehicle structured so as to be able to attain an interrupting state of inertia of a drive motor under a predetermined condition. Therefore, the drive unit for a vehicle has a drive motor able to transmit driving force to a drive wheel, and an oper... | 04/10/2007 |
| 7198122 | Device for transporting a stroller A device for transporting strollers includes a base member having a plurality of compartments, a plurality of wheels for supporting the base member wherein two such wheels are mounted adjacent the rear portion and another wheel is pivotally mounted to the base membe... | 04/03/2007 |
| 7195253 | Motorized traction device for a patient support A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system. ... | 03/27/2007 |
| 7191854 | Self propelled gurney and related structure confidential and proprietary document A modular drive unit for a gurney including a control/handle module, a cord reel/charger module, a drive module, and a chassis assembly, plus all needed electrical wiring harnesses and pneumatic tubing to connect them. The modules mount to any existing gurney and to... | 03/20/2007 |
| 7174093 | Wheel chair drive apparatus and method A control system for a powered wheel chair drive modulates a pulse power delivery signal such that power is delivered gradually at throttle positions corresponding to a low speed, and power is delivered more rapidly at throttle positions corresponding to a higher sp... | 02/06/2007 |
| 7172044 | Self-propelled wheel board A wheel board comprising a wheel (2) with a diameter of 0.2 to 0.6 m mounted on a free wheel (21), mounted on an axle (3) situated on a vertically pivoting arm (4) arranged on the board (1), and mounted freewheeling and driven by a... | 02/06/2007 |
| 7168514 | Materials handling device and system A materials handling device includes a chassis, handle shaft pivotally mounted to the chassis for maneuvering the device, two rollers rotationally mounted to the chassis, battery pack supported on the handle shaft, electric motor and gearbox fitted in one roller in-... | 01/30/2007 |
| 7134829 | Cargo trailer A trailer for carrying cargo includes a frame, at least two axles mounted to the frame, and a deck. The axles have wheels at opposite ends of the axles for movably supporting the frame above the ground. The deck is pivotally mounted to the frame and is pivotable abo... | 11/14/2006 |
| 7124454 | Pneumatic cot for use with emergency vehicles An ambulance cot is provided having a wheeled carriage, a frame for mounting the wheels, a horizontally oriented patient litter supported from the wheeled carriage and variable, pneumatically powered height scissors frame. The pneumatic actuator is designed to give ... | 10/24/2006 |
| 7117967 | Wheel chair apparatus and method A wheel chair drive apparatus includes a frame having a wheel mount, a battery mount, and a control shaft mount. A drive wheel has a drive motor incorporated within the drive wheel. A battery is in operative communication with the drive motor via a detachable jack. ... | 10/10/2006 |
| 7090601 | Tractor hitch transmission The invention involves an agricultural machine with a drive train to be coupled onto the power take-off shaft of a tractor, with a transmission integrated into the drive train. In these types of agricultural machines it is frequently necessary, after starting at a h... | 08/15/2006 |
| 7090041 | Motorized traction device for a patient support A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system. The input system controls the speed and direction of the propulsion devic... | 08/15/2006 |
| 7083012 | Motorized traction device for a patient support A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system. ... | 08/01/2006 |
| 7021720 | Till track vehicle A vehicle that uses a steel lug wheel assembly while in the field and has retractable rubber tires for transport on paved roads. The vehicle is capable of simultaneously performing multiple farm operations in a field. The multiple farm operations include shredding, ... | 04/04/2006 |
| 7014000 | Braking apparatus for a patient support A patient support including a propulsion device for moving the patient support. An automatic braking system is provided to selectively brake the patient support. ... | 03/21/2006 |
| 7007765 | Method for driving a wheeled carriage A powered wheeled carriage includes a patient support and a wheeled base. An auxiliary wheel mechanism includes an auxiliary wheel spring support for biasing an auxiliary wheel into contact with a floor. Operating a control apparatus moves the auxiliary wheel away f... | 03/07/2006 |
| 6983813 | Remote controlled and motorized baby walker A baby walker includes motor-driven wheels with the motor being connected to sensors on the walker and to a remote control system. The sensors on the walker prevent the walker from colliding with objects, such as furniture or the like, and the remote control system ... | 01/10/2006 |
| 6957855 | Seat for a bicycle A seat for a bicycle includes two suspended seat straps which support the buttocks of a rider. The straps are attached to front and rear support arms which are attached to two points on the frame of the bicycle. The front support arms form an inverted bifurcated ass... | 10/25/2005 |
| 6957722 | Vehicle chocking system A vehicle chocking system includes a control panel positionable within a vehicle for remotely operating the system. The system further includes a housing and a power source for supplying power to the system. The housing includes a motor disposed therein and electric... | 10/25/2005 |
| 6938711 | Freestanding self-propelled device for moving objects A freestanding self-propelled device for moving objects. The device includes a chassis having lower frame portions and upright frame portions. A single motor-driven drive wheel is centrally located between the lateral ends of the chassis and coupled to the chassis s... | 09/06/2005 |
| 6938923 | Power wheelchair A curb-climbing rear wheel drive power wheelchair is disclosed having a pair of drive wheels, at least one ground-engaging idler wheel connected to the frame forward of the drive wheels and at least one anti-tip wheel mounted above ground aft of the drive wheels. Th... | 09/06/2005 |
| 6935448 | Obstacle traversing wheelchair The present invention provides a curb-climbing wheelchair having pivotal arm assemblies. The pivotal arm assemblies include at least one front caster and have the ability to rotate or pivot. The pivot arms rotate or pivot in response to moments generated by accelera... | 08/30/2005 |
| 6923468 | Adjustable container carriage A front and rear wheel assembly having an axle housing with a wheel rotatable on a shaft at each end of the axle housing and a connecting member connecting a central portion of each axle housing. A right and left side upright support frame affixed to a top surface o... | 08/02/2005 |
| 6923278 | Adjustable anti-tip wheels for power wheelchair A power wheelchair with front anti-tip wheels for substantially eliminating partial tips of the wheelchair is described. The anti-tip wheels are attached to the end of an extension arm which is attached to the frame of the wheelchair. A spring connects the anti-tip ... | 08/02/2005 |
| 6896079 | Convertible wheelchair and methods for making the same A method for converting an ordinary wheelchair over to electric. The method employs a small electric scooter and fastener that are easily connected and separated for ease of transport. The result is a lightweight and low cost system having a high degree of versatili... | 05/24/2005 |
| 6880661 | Detachable motor drive for a bicycle A motor drive for a bicycle is provided. The motor drive includes a drive wheel and a motor device driving the drive wheel. The drive wheel contacts the ground and moves the bicycle by rotating friction between the drive wheel and the ground. The motor device includ... | 04/19/2005 |
| 6877572 | Motorized traction device for a patient support A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system. The input system controls the speed and direction of the propulsion devic... | 04/12/2005 |
| 6860347 | Wheelchair drive unit An electric drive attachment for a wheelchair comprising a drive housing containing an electric motor, a drive wheel which touches the ground and drives the wheelchair through frictional contact with the ground and speed reducing mechanism between the motor and driv... | 03/01/2005 |
