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7599774 |
Method and system for adaptively compensating closed-loop front-wheel steering control
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...
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7591340 |
Steering and driving system for an industrial truck
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′ ),...
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7549502 |
Steering device for steering wheels
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...
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7494154 |
Powered maneuverable and retractable trailer jack device
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...
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7451841 |
Mobile trailer hitching apparatus
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...
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7328761 |
Steerable trailer drive assembly
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...
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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...
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7306250 |
Method of attaching a manually operated wheelchair to a motorized scooter
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....
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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...
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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...
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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...
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6991050 |
Drive mechanism for trailer
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...
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6945343 |
Motorized trailer wheel with direct drive and trailer incorporating same
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...
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6889784 |
Motorized chariot
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...
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6883632 |
Manual-electric wheelchair drive device
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...
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6854555 |
Single wheel driving mechanism
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...
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6779616 |
Motorized directionally steerable trailer tongue jack
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...
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6766871 |
Attachment means for attaching a wheelchair to a motorized apparatus
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...
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6729422 |
Detachable transmission mechanism for a wheel chair and driving device thereof
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...
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6347677 |
Trailer maneuvering jack with a compact drive wheel
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...
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6343907 |
Low-lift fork truck
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...
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6170585 |
Trailer driver
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...
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5651422 |
Universal-fit, quick-connect power drive/steer attachment for wheelchair
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...
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5501480 |
Auxiliary frame for a wheelchair and wheelchair for use with an auxiliary frame
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...
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5494126 |
Apparatus and method for attaching a motorized wheel to a wheelchair
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...
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5479998 |
Electronic powered motor vehicle
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...
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5465801 |
Motorized wheelbarrow
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...
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5385210 |
Tow vehicle system
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...
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5375673 |
Golf bag card accessory drive unit
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...
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5325934 |
Highly maneuverable trailer driver
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...
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5307889 |
Portable golf cart
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...
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5244051 |
Central steerable driving means of wheelchair
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...
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5207286 |
Steerable wheelchair attachment with powered coupling means
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...
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5183133 |
Motor-driven chair
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...
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5137103 |
Remote controlled golf bag cart
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...
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5135063 |
Power unit for driving manually-operated wheelchair
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...
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5125468 |
Electric control for wheelchair drive unit
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...
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5113961 |
Tractor and trailer combination air cushioned vehicle
Two wheels of different modes are provided which add guidance capabilities to air cushioned vehicles. A tractor utilizes the wheel of the first mode, a wheel mounted upright upon a hollow tubular...
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5050695 |
Power attachment for wheelchair
A powered unit for adding motive power to a wheelchair comprising a frame adapted for easy attachment to the chair and steerable motive means powered preferably by an electric motor and including a...
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5016720 |
Detachable electric drive unit for collapsible wheelchair
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...
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4861058 |
Disassemblable sulky vehicle
A disassemblable three wheeled, sulky vehicle for the handicapped and others desiring assistance has a steerable front wheel drive unit comprising a steering column mounting assembly with a motor...
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4860841 |
Device for maneuvering of trailers
A motorized device for aiding the maneuvering of trailers subsequent to detachment from the towing vehicle is presented which comprises a shaft attachable to the drawbar of the trailer and which is...
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4757868 |
Disassemblable vehicle for attachment to a powered, steerable front wheel and components for rigidly holding the vehicle in assembled condition
A demountable sulky, which may be readily coupled and uncoupled to a steerable, motor-driven front wheel assembly, incorporates a T-bar which is disengageably latched at its front end to the front...
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4750578 |
Dismantlable and collapsible utility cart
A chassis member with rear wheels and a battery compartment has a detachable connection with an upright front wheeled support. The front wheeled support has a steering handle assembly pivotally...
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4662476 |
Portable scaffold and retrofit kit therefor
A retrofit kit for a portable scaffold having a relatively open frame supported for movement on a plurality of wheels and a platform for a worker disposed on the frame includes a wheel and a mount...
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4503925 |
Detachable steerable power unit for occupant-propelled wheelchairs
A steerable motorized power unit is constructed for detachable coupling to a conventional occupant propelled wheelchair in a manner such that it can be easily and conveniently coupled to, or...
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4386672 |
Detachable electric drive unit for wheelchair
A battery powered steerable electric drive unit for detachable connection to a conventional wheelchair comprises: a framework releasably connectable to the wheelchair frame by snap-on connectors; a...
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4356875 |
Portable motorized golf cart
A portable motorized golf bag cart having an elongated main frame to which is attached a steering handle at the upper end thereof, a foldable undercarriage attached intermediate the ends thereof...
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4275797 |
Scaffolding power attachment
A power unit for attachment to scaffolding towers such as commonly used for overhead work in the installation of wiring, ductwork, painting, and finishing. A single power unit attached to one leg...
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4210217 |
Self-propelled steering device for trailers
A self-powered device for maneuvering automobile trailers after they are disconnected from the automobile comprises a coupling sleeve for receiving the lower end of a telescopic jack tube on the...
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