Abstract: A drive unit (1) for an industrial truck comprises a drive motor (2), an electronic steering mechanism (3) being arranged at the periphery thereof. In this way, the drive unit (1) is configured such that it is simpler to assemble and more reliable to operate due to less wiring.

Abstract: A wheel with a self-contained drive mechanism is provided to propel (or assist in propulsion of) bicycles, tricycles, and similar vehicles. The wheel preferably takes the form of a shock absorbing detachable wheel, which is readily received within the dropouts of a bicycle frame or fork to be attached therein by a standard quick-release mechanism. Thus, the wheel may be added to (or removed from) preexisting standard bicycles and the like.

Abstract: The present invention provides a kit for attaching a manually operated wheelchair to a motorized scooter having a seating apparatus and supporting structure and a floor, comprising: (a) a motorized scooter attachment angle iron, wherein the angle iron comprises: (i) a vertical wall; and (ii) a horizontal wall, the horizontal wall forming approximately a right angle to the vertical wall, wherein the horizontal wall has at least two embedded elongated slots; (b) an angle iron attachment adjustable bar, wherein the adjustable bar comprises (i) a left elbow shaped tubular segment having a horizontally oriented bottom end and a vertically oriented top end; (ii) a right elbow shaped tubular segment having a horizontally oriented bottom end and a vertically oriented top end; and (iii) a straight middle tubular segment having a diameter larger than the left segment and the right segment, so as to permit the left segment to insert into a left end of the middle tubular segment and so as to permit the right segment to i

Abstract: A garbage can moving system includes an elongated handle having a first end and a second end. A grip is attached to the second end. A bracket assembly is attached to the handle adjacent to the first end. The bracket assembly is removably engageable with a rod positioned on a perimeter wall of a garbage can. A wheel is rotatably coupled to the handle and extends below the first end of the handle. A motor is coupled to the handle and is mechanically coupled to the wheel. The motor rotates the wheel when the motor is turned on. An actuator is electrically coupled to the motor. The motor is turned on when the actuator is actuated to an on position and the motor is turned off when the actuator is actuated to an off position.

Abstract: A powered, directionally steerable trailer jack that can be used to elevate and lower a trailer tongue and having a caster wheel assembly affixed to a lower end of the jack. The caster wheel assembly includes a shroud having the wheels' axle journaled for rotation at a lower end thereof along with a pair of shafts also journaled for rotation in the shroud and oriented parallel to the axle. A chain and sprocket arrangement provides a low-speed, high torque transmission between one of the shafts and the axle and a high-speed, low torque transmission between the other of the shafts and the axle. The trailer jack assembly can be tilted out of its vertical disposition to provide adequate clearance when the trailer is being pulled over uneven road surfaces. The power for driving the wheels may be provided manually by means of a crank for turning one or the other of the shafts or by an electric motor coupled one of the shafts.

Abstract: An active front-wheel vehicle steering control system that employs closed-loop control includes an adaptive compensation sub-system that compensates for changes in vehicle dynamic parameters. The control system includes a dynamic parameter estimation sub-system that provides an estimated front cornering compliance and rear cornering compliance based on a steering wheel angle signal, a vehicle lateral acceleration signal, a vehicle yaw rate signal and a vehicle speed signal. The closed-loop control includes active gain for each of vehicle yaw rate, yaw acceleration, side-slip and side-slip rate, all based on the vehicle speed and vehicle dynamic parameter changes for use in generating a steering angle control signal to the front wheels of the vehicle.

Abstract: A steering and driving system (1, 53, 54) for an industrial truck with a driving engine (2), a driving transmission (21), a steering engine (4) and a steering transmission (5, 32, 32?), through that one rotor (23) arranged on a wheel hub (22) could be driven and is swivelable at a vertical axis (V). For the realization of the compact design form as well as lesser manufacturing costs for this steering and driving system is considered, that the driving engine (2), the steering engine (4) and the steering transmission (5, 32, 32?) are arranged co-axially to each other.

Abstract: A steering apparatus for steering wheels (1) of a vehicle (2) comprises support means (4) arranged for supporting said wheels (1), driving means (27) arranged for rotating said support means (4) around respective longitudinal axis means (Z) and connecting means arranged for connecting said driving means (27) with said support means (4), said connecting means comprising transmission gear means (26); a vehicle comprises steered wheel means (1) and steering means (3) arranged for controlling said steered wheel means (1), said steering means (3) comprising support means (4) arranged for supporting said steered wheel means (1), driving means (27) arranged for rotating said support means (4) around respective longitudinal axis means (Z) and connecting means arranged for connecting said driving means (27) with said support means (4) , said connecting means comprising transmission gear means (26).

Abstract: A powered maneuverable and retractable trailer jack adapted for attachment to a tongue of a trailer has an external sleeve, a gear rack on an exterior of the external sleeve, a housing containing at least one gear engaged with the gear rack and operative to move the external sleeve relative to the housing, the housing including a mount configured for attachment to the tongue of a trailer whereby the external sleeve is laterally offset relative to the tongue of a trailer, an internal rod within the external sleeve, the internal rod extending through a wheel fork at a lower distal end of the internal rod and the external sleeve and attached to a drive gear which is engaged with a shaft gear upon a drive shaft rotationally mounted in the wheel fork, and a drive sprocket attached to the drive shaft, a wheel mounted upon an axle rotationally mounted within the wheel fork, and a wheel sprocket attached to the axle proximate to the wheel, and a chain which extends continuously from the wheel sprocket to the drive sp

Abstract: A trailer loading or hitching device for moving a trailer between a storage position and attachment of a tongue of the trailer to a tow vehicle, comprising a vertical lifting column selectively extendable and retractable by a mover and pivotally connected to a drive wheel chassis by a mount for a steering shaft operatively engaged to the lifting column, the drive wheel chassis having opposing drive wheels selectively operable for moving the chassis.

Abstract: An auxiliary power device for a wheelchair includes a coupling seat unit disposed on the chair frame, an adjustable unit, and a power supply unit. The adjustable unit includes a steering operation rod unit disposed rotatably on the coupling seat unit, an electrical wheel unit disposed on a bottom end of the operation rod unit, and a linkage interconnecting the electrical wheel unit and the coupling seat unit. The power supply unit provides electricity to the electrical wheel unit. The electrical wheel unit is movable relative to the operation rod unit between a used position whereat a lower end of the electrical wheel unit is below that of the front wheels, and an unused position whereat the lower end of the electrical wheel unit is above that of the front wheels.

Abstract: A steerable drive assembly for local movement of a trailer includes an electric motor drive wheel unit having a drive wheel connected to the output shaft of a gear reduction unit. A steering shaft is connected to the drive wheel unit and an upper operating handle. The steering shaft is rotatably supported by a sleeve assembly that is attached to the tongue of the trailer. The operating handle includes a throttle coupled with the electric motor through a variable speed control for providing progressing power to the motor to enable speed variation without wheel slippage.

Abstract: 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 wheel unit. A lifting-and-lowering device interconnects the frame and the drive wheel unit for lowering and lifting the drive wheel unit with respect to the driven wheel unit between an upper position, in which, the drive wheel unit is disposed at an elevation above the driven wheel unit, and a lower position, in which lower surfaces of the driven and drive wheel units are flush with each other.

Abstract: A method of attaching a manually operated wheelchair to a motorized scooter using an angle iron, an adjustable bar that has a left segment, a middle segment, a right segment and a pair of adapters. A user slides the middle segment over the left and right segments, and inserts screws into left and right holes in the middle segment and aligned holes in the left and right segments. The user then screws the adapters onto upper ends of the left and right segments and snaps them into position on the underside of the wheelchair. Next, the user removes the seating apparatus from the scooter, fastens the angle iron to the floor of the scooter by inserting a pair of bolts through the slots in the angle iron and tightening the bolts with a pair of matching nuts, and places the bar squarely against the angle iron.

Abstract: 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 receiver is mounted on a front end of the hitch tongue for connecting the tug to a towing vehicle. A vertical height adjustment frame is slidably connected to the collar. A linear actuator moves the height adjustment frame up and down relative to the collar. A power unit frame is pivotally attached to the height adjustment frame for pivotal movement about a vertical axis. A motor, transmission and driven wheels are mounted on the power unit frame. The linear actuator raises and lowers the driven wheels. A steering system pivots the power unit frame to steer the tug.

Abstract: 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 assembly is mounted on the chassis and includes a wheel assembly with a single wheel rotatably mounted on the chassis, a combined clutch and brake assembly connected to the wheel assembly, a motor assembly connected to the combined clutch and brake assembly to drive the single wheel assembly through the combined clutch and brake assembly and a one-hand operated battery assembly coupled electrically to the motor assembly to drive the control unit and the motor assembly. The wheelchair connecting assembly interconnects the framework to a wheelchair. Consequently, the motorized apparatus will tow the wheelchair along a path, road and so on.

Abstract: 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. A battery housing is dimensioned to mount in the battery mount of the frame and has a handle. A control shaft pivotably mounted on the control shaft mount, so that it has a stow position, and operating position, a user entry position and a table use position. A caster lever is pivotably mounted to the frame, so that it has a rolling position and an engaged position. The caster lever is disposed to engage a receiving seat on a wheel chair. A locking lever is releasably biased toward a position locking the caster lever in the engaged position.

Abstract: The present invention discloses a drive wheel for placement on the front end of a boat trailer or the like which wheel both drives and steers a trailer into a position where the trailer tong can be connected to the rear end of the towing vehicle. The concept of the present invention may also be applied to other similar vehicles, such as trailers for hauling snowmobiles, woodcutters or water crafts and other heavy objects and possibly for travel trailers.

Abstract: The invention is a motorized trailer wheel mounted to a trailer tongue jack which has a single power source such as 12-volt battery-powered electric motor and gear reducer. The motor drives a pinion gear which engages a circular rack mounted to the wheel. Operation of the motor is controlled by an electrical switch assembly which can switch among OFF, FORWARD, and REVERSE positions.

Abstract: A vehicle incorporating a power unit having a front portion, a rear portion and a power source. A drive wheel, disposed in the front of the power unit, is connected to the power source. A brake pad is connected to the power unit beneath the power source and a handle bar extends back from the power unit. The vehicle includes a trailer unit, disposed behind the power unit, having two trailer wheels, disposed on opposite sides of the trailer unit. A connecting joint, connecting the power unit to the trailer unit, allows the power unit and trailer unit to move with respect to one another about the horizontal pitch axis and/or vertical yaw axis.

Abstract: An input device (such as a rotational hand crank) receives a constantly-applied motion, and outputs a signal to a controller which, in turn, sends an appropriate signal to an electric motor, which is connected to the chair via a mechanical transmission. The wheel is removably mounted in front of a wheelchair such that the front wheels of the chair are lifted above the ground. The device is generally steered manually, such as by pivoting an input device to one side.

Abstract: A single-wheel driving mechanism for floor transport vehicles is comprised of a gearing housing with at least one gear stage, a flanged-on drive motor, and a driven running wheel. For obtaining the smallest possible installation space or achieving a simplified installation or removal of the single-wheel driving mechanism, in conjunction with high transmission of force at the same time, the running wheel is directly connected with torsional strength with a gear of the transmission, and the gear of the transmission is rotatably supported on a support element.

Abstract: A motorized directionally steerable trailer tongue jack having a height adjustment system, a steering system, a drive system, a mounting plate, and a control system. The height adjustment system includes a power transmission screw. The power transmission screw is secured to the drive system at one end and proceeds to pass through the height adjustment system, the mounting plate, and the steering system. The power transmission screw engages the height adjustment system through threaded receipt in a power sleeve nut, and engages the steering system via receipt in a steering sleeve that fixes the relative position of the screw and the sleeve. The power transmission screw and power sleeve nut may be self-locking. The control system may include a wireless user pendent. The control system permits a user to move and steer a trailer while adjusting the tongue height to cooperate with a vehicle hitch.

Abstract: A powered propulsion apparatus that is attachable to and detachable from, a wide range of conventional wheelchairs without modification of the propulsion apparatus or the wheelchairs. The propulsion apparatus converts a conventional manually powered wheelchair into a power driven wheelchair. The apparatus clamps to the front wheels of a conventional wheelchair with a clamping mechanism that is adjustable to accommodate a wide range of wheel-spacings and wheel sizes and accommodates an inexactitude of alignment between the clamps and the wheelchair. The clamping mechanism secures the wheel chair to the propulsion apparatus without damage or stress to the wheelchair components.

Abstract: A conventional wheelchair (11) is powered by the hands and arms of the User. It normally has two large hand/arm driven rear wheels (17) and two small front castor-like wheels (19). The available powered chairs are expensive and complex, and not suitable for use both out on the street and also in inside at home or at work. The present invention furnishes a self-powered steerable mobility unit (21) that can be securely but removably attached in a matter of minutes to a wheelchair to provide superior mobility and yet increased stability and greater ease of use both indoors and out.

Abstract: A detachable transmission mechanism for a wheel chair includes a control unit, two support frames, a suspension frame and a driving device. The channel clamps of the two support frames can be connected to two lower transverse rods of an existing wheel chair and the joining tubes at two sides of the battery unit is connected to the joining pipe so that the battery unit can be fixed beneath a seat of the wheel chair; furthermore, the control unit is positioned on one side of one of armrest of the wheel chair so that in case of the handle being rotated, the vertical shaft, rotary plate and the connecting rod can move relatively and in turn rotate the suspension frame as well as the driving device; and when a control switch is turned on, the driving wheel can be rotated in either forward or reversed direction and thus move the wheel chair forward or backward.

Abstract: A detachable transmission mechanism for a wheel chair includes a control unit, an engaging unit, a battery unit and a transmission device. The original front wheels of the wheel chair can be detached and the hub and the pivot part are mounted to both the upper and lower frames of the wheel chair. The battery unit can be fixed to the wheel chair under the seat thereof. When a control switch is turned on, the driving wheel can rotate in a forward or a reversed direction with the wheel chair being capable of moving forward or backward. By turning the handle, a follower wheel at the bottom of the wheel chair can be rotated to allow the wheel chair making a turn.

Abstract: A detachable transmission mechanism for a wheel chair includes a control unit, two support frames, a suspension frame and a driving device. The channel clamps of the two support frames can be connected to two lower transverse rods of an existing wheel chair and the joining tubes at two sides of the battery unit is connected to the joining pipe so that the battery unit can be fixed beneath a seat of the wheel chair; furthermore, the control unit is positioned on one side of one of armrest of the wheel chair so that in case of the handle being rotated, the vertical shaft, rotary plate and the connecting rod can move relatively and in turn rotate the suspension frame as well as the driving device; and when a control switch is turned on, the driving wheel can be rotated in either forward or reversed direction and thus move the wheel chair forward or backward.

Abstract: A detachable transmission mechanism for a wheel chair includes a control unit, an engaging unit, a battery unit and a transmission device. The original front wheels of the wheel chair can be detached and the hub and the pivot part are mounted to both the upper and lower frames of the wheel chair. The battery unit can be fixed to the wheel chair under the seat thereof. When a control switch is turned on, the driving wheel can rotate in a forward or a reversed direction with the wheel chair being capable of moving forward or backward. By turning the handle, a follower wheel at the bottom of the wheel chair can be rotated to allow the wheel chair making a turn.

Abstract: A powered propulsion apparatus that is attachable to and detachable from, a wide range of conventional wheelchairs without modification of the propulsion apparatus or the wheelchairs. The propulsion apparatus converts a conventional manually powered wheelchair into a power driven wheelchair. The apparatus clamps to the front wheels of a conventional wheelchair with a clamping mechanism that is adjustable to accommodate a wide range of wheel-spacings and wheel sizes and accommodates an inexactitude of alignment between the clamps and the wheelchair. The clamping mechanism secures the wheel chair to the propulsion apparatus without damage or stress to the wheelchair components.

Abstract: An input device (such as a rotational hand crank) receives a constantly-applied motion, and outputs a signal to a controller which, in turn, sends an appropriate signal to an electric motor, which is connected to the chair via a mechanical transmission. The wheel is removably mounted in front of a wheelchair such that the front wheels of the chair are lifted above the ground. The device is generally steered manually, such as by pivoting an input device to one side.

Abstract: A trailer maneuvering jack comprised of a tongue jack and a compact drive wheel assembly. The tongue jack is comprised of an outer sleeve and an extendable and retractable inner sleeve. The drive wheel assembly is comprised of a wheel, motor, and drive train. The drive wheel assembly is attached to the outer end of the inner sleeve of the tongue jack by means of a power drive mounting bracket. The wheel is located along the longitudinal centerline of the tongue jack with its axle perpendicular thereto. The axis of the drive shaft of the motor is located along the wheel axle axis and operably connected thereto by a drive train. In a first embodiment the motor case is cylindrical and it and cylindrical bearing means mounted thereon constitute the axle of the drive wheel. In a second embodiment a rotational ring gear forms the axle of the wheel.

Abstract: A low-lift fork truck including a driving part which has a driving wheel disposed on the longitudinal axle and is driven by an electric motor, which is supported in a steering bolster adapted to be pivoted about a vertical axis, and a drawbar hinged to the steering bolster and a lifting cylinder. The truck further including a load-carrying part adjustable in height to a certain extent towards the driving part which has two parallel-spaced wheel arms and a rigid transverse member interconnecting the wheel arms wherein the transverse member is adapted to be coupled to the lifting cylinder and a linkage coupled to the transverse member is joined by a hinge to a forcing bar in the wheel arms which, in turn, actuates the rocker of a load-carrying roller at the end of the wheels arms to perform a lift.

Abstract: A trailer driver for guiding and driving a trailer when the trailer is disconnected from the hitch of a vehicle. The device includes a support frame and a ground engaging wheel rotatably mounted to the support frame. A mounting bracket is pivotally coupled to the support frame and is adapted for mounting the support frame to a trailer tongue. A motor is provided for rotating the ground engaging wheel. A steering handle upwardly extends from the support frame.

Abstract: A power drive/steer attachment for a wheelchair having a framework supporting a plurality of front and rear wheels and a seat for accommodating an operator, is adapted for use with a motive source and includes a frame for attachment to and detachment from the framework of the wheelchair, a ground engaging mechanism, coupled to an end of a column, for driving the wheelchair by frictionally contacting a ground surface, a mechanism for driving the ground engaging means, and a mechanism, coupled to the second end of the frame, for controlling the driving mechanism and for steering the ground engaging mechanism to thereby steer the wheelchair.

Abstract: An auxiliary frame for a wheelchair, the auxiliary frame having a coupling assembly for coupling the auxiliary frame to the wheelchair, at least one steerable wheel and a drive assembly. The coupling assembly is formed by a central elongate body provided with a bearing for co-action with the frame of the wheelchair and a clamping bracket pivotally connected to the elongate body and co-acting with the bearing. A stationary hook-like member is connected to the elongate body.

Abstract: An apparatus and method for attaching a motorized wheel to a wheelchair including a mounting frame operatively connected to the motorized wheel, the frame having a laterally-extending cylindrical member, and a mounting bracket operatively connected to a frame of the wheelchair, the bracket having an open slot for receiving the cylindrical member of the mounting frame, the slot defining an interior cam surface which is open on the front side thereof and enclosed on the bottom, back and top sides thereof. The frame has means for adjusting the width thereof to accommodate a variety of different wheelchairs. The mounting frame has a second laterally-extending cylindrical member which is a slidable pin for selective engagement with the mounting bracket to attach the motorized wheel to the wheelchair.

Abstract: A motor vehicle with an on-board propelling power source and operator control functions for steering, increasing and decreasing the vehicles rate of motion. The vehicle includes a chassis with an operator seat for receiving a human operator; a front wheel that can be laterally directed by the operator so the operator can steer the vehicle; a front wheel which is connected to an electronic motor for propelling the vehicle; a drive-gear train assembly for transferring the rotational power of the electronic motor to rotational power of the front wheel; a pair of rear wheels spaced laterally relative to each other for supporting and assisting in maneuvering the vehicle; and a pair of front stabilizing wheels spaced laterally from the front wheel with the front wheel intermediate to the front stabilizing wheels. The steering mechanism, drive-gear train assembly, and electronic motor are attached to a steering shaft and rotate with the steering shaft.

Abstract: A motorized wheelbarrow for transporting materials placed therein from one location to another comprising a rigid container having a front portion, a rear portion, a lower portion, an opened upper portion, and a hollow space disposed between the portions adapted for holding materials to be transported; an elongated axle coupled to the lower portion of the container adjacent to the front portion thereof; a pair of wheels, each wheel rotatably coupled to an end of the axle; a pair of legs extending downwards from the lower portion of the container adjacent to the rear portion thereof for holding the container in a generally level and stationary position; a pair of handles coupled to the container and extended from the rear portion thereof for raising the rear portion; a motor coupled to the container; a drive mechanism coupled between the motor and axle for transferring rotational motion from the motor to the axle and wheels for transporting the container; a battery coupled to the container for energizing the m

Abstract: A tow vehicle system which includes a vehicle chassis, a vehicle drive mechanism and a power actuating mechanism for driving a wheel member in frictional engagement with a base surface. The tow vehicle system includes a pair of batteries which are mounted on opposing sides of a drive axle of wheel member. A motor member is mounted in vertical aligned relation with respect to drive axle to maintain a longitudinally balanced weight relation of the tow vehicle system about drive axle. In this manner, maneuverability and control of tow vehicle system is optimized.

Abstract: An accessory drive unit for attachment to the central support member of a non-motorized golf bag cart having two rear wheels, the accessory drive unit including a front wheel drive unit having a front wheel, a motor within the front wheel, control circuitry for controlling the speed and direction of rotation of the front wheel, and structure to steer the front wheel unit.

Abstract: Apparatus for motorized transport of the hospital bed and care cart docks to the head end of the bed and has a drive wheel, a motor propelling the drive wheel, a joy stick type potentiometer for controlling the speed and direction of the drive wheel and handles for grasping the apparatus and maneuvering the apparatus and the hospital bed. Gas springs are actuated by the bed when the motorized transport apparatus and bed are docked together for exerting a downward force on the drive wheel to reduce the tendency of the drive wheel to slip. The apparatus falls within the footprint of the bed.

Abstract: A trailer driver for moving and supporting a trailer is disclosed. A frame provides a base for supporting two downwardly facing opposing arms. A fixed bearing extends upwardly from the base and supports a vertical hitch shaft that is rotatably engaged within the bearing. A trailer hitch clamp is removably fixed to the hitch shaft and is adapted for holding a trailer hitch. The hitch shaft engaging a cover and further provides a fixed steering sprocket coaxial with the hitch shaft. A drive wheel is rotatably mounted on a horizontal axle, which is positioned between the two arms of the frame, and engages a drive sprocket for rotating therewith on the axle. An electric motor is fixed to the frame and provides a driven sprocket interconnected with the drive sprocket by a first drive belt. A drive circuit drives the motor in either a forward or reverse direction.

Abstract: A golf cart or other personal utility vehicle includes a wheeled platform, a wheeled gooseneck frame detachably secured at the rear of the platform, and a detachable steering handle for turning a powered wheel on the gooseneck frame for steering purposes. A detachable upright post provides support for a conventional golf bag and set of clubs. A forwardly facing occupant seat is detachably mounted to the gooseneck frame, thereby placing the weight of an occupant substantially upon the rear driving and steering wheel. The golf cart provides a mechanized vehicle capable of use on all types of terrain. It can be readily disassembled for storage and transport within the trunk or cargo area of a conventional passenger automobile.

Abstract: A steerable driving device includes a driving rod rotatably mounted in a sleeve fixed on a bracket detachably secured on a central portion of a wheelchair, a handle secured on a crank arm perpendicularly secured to the driving rod, a driving wheel rotatably mounted on a front fork formed on a lower portion of the driving rod, and a driving motor electrically driven by a battery carried on the wheelchair, whereby upon a steering of the driving device by gripping the handle, the wheelchair may be driven steerably conveniently.

Abstract: A steerable and self-powered attachment for wheelchairs. This attachment is free-standing and includes a powered coupling means which is adapted for simultaneous attachment while the front of a wheelchair, carried thereon, is lifted to provide three wheel contact with the surface. The attachment includes a auxiliary frame, a drive means, a steering means, and the powered coupling means. The attachment is adapted to be coupled to the wheelchair by the occupant by actuation of a switch.

Abstract: A motorized wheel assembly is provided in which there is a seat for receiving the occupant attached to a vertical shaft with a single central wheel mounted at the bottom of the shaft for rotation about a horizontal axis transverse to the chair and defining a direction of forward movement of the wheel forwardly of the chair. On the chair and the shaft is carried a battery and control unit for supplying power to the drive motor of the wheel mounted on the hub of the wheel. An outrigger frame includes a sleeve slideable on the shaft and a plurality of arms extending outwardly from the sleeve each arm carrying a castor wheel to prevent toppling of the device. Steering is achieved by the feet of the user applied to the outrigger frame to rotate the chair and the drivewheel about a vertical axis.

Abstract: A remote controlled golf bag cart is described. The cart consists of two rear wheels and a front wheel mounted on a tricycle-type chassis. The rear wheels are coupled to a battery operated electric motor which drives them simultaneously. The front wheel is controlled by a motor driven worm device which turns the front wheel to the right or the left. A remote control is used to operate the motor which typically has a rheostat and to turn the front wheel to the left or right. The remote control is a radio signal transmitter and receivers are operably coupled to the drive motor and the directional motor.

Abstract: This invention relates to a power drive unit which is attachable to, and detachable from, a conventional wheelchair. Thus, a conventional manually-powered wheelchair can be converted into a power driven wheelchair employing the subject apparatus for driving and directing the movement of a manually-driven wheelchair having a plurality of wheels riding on an underlying surface. The subject apparatus comprises a drive and steering wheel which rides on the underlying surface for driving and for directing the path of operation of the wheelchair, as well as for powering the drive wheel. The apparatus is attachable to, and detachable from the wheelchair and is located rearwardly of the wheelchair so that the weight on the drive and steering wheel will substantially only be the weight of the apparatus. On the other hand, the weight of a person sitting in the wheelchair will be substantially the only weight imparted to the wheelchair wheels.

Abstract: A battery powered steerable electric drive unit for detachable connection to a conventional wheelchair having a collapsible wheelchair frame comprises: a support releasably connectable to the wheelchair frame by an adjustable releasably lockable attachment mechanism; a drive assembly pivotably (steerably) mounted on the support and including a ground-engaging wheel and a battery powered electric motor for dirving the wheel; a solenoid-operated brake engageable with a disc-like surface of a pulley in the drive mechanism for the wheel; a detachable steering column having a handle mounted thereon and pivotably and rotatably mounted on the support; an adjustable steering mechanism mounted on the support and connected between the steering column and the drive assembly to effect steering when the steering column is rotated about its longitudinal axis; and an electric controller comprising an off-forward-reverse switch, a speed control switch and a brake switch mounted on the handle, and further comprising a solid-s