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Match Document Document Title
8827014 Compact pulling apparatus  
The apparatus includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling...
8725363 Method for operating a materials handling vehicle utilizing multiple detection zones  
A multiple detection zone supplemental remote control system for a materials handling vehicle comprises one or more sensors capable of defining multiple contactless detection zones at least...
8725362 Multiple zone sensing for materials handling vehicles traveling under remote control  
A supplemental control system for a materials handling vehicle comprises one or more sensors capable of defining multiple contactless detection zones at least towards the front of the forward...
8725317 Multiple detection zone supplemental remote control system for a materials handling vehicle  
A multiple detection zone supplemental remote control system for a materials handling vehicle comprises one or more sensors capable of defining multiple contactless detection zones at least...
8528672 Compact pulling apparatus  
The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling...
8485287 Compact tool carrier with articulation joint  
A stand-up, ride-on work vehicle adapted for multiple applications. The vehicle comprises a base unit, an articulating joint, and one of a plurality of interchangeable equipment chassis. The base...
8465103 Self propelled transport device  
A transport device has a chassis with a front end and a rear end. The device has a continuous track supporting the chassis above a surface configured to move the chassis along the surface. A...
8453769 Compact pulling apparatus  
The apparatus includes a watertight elongate housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling...
8333389 Wheelchair stair assist apparatus  
An apparatus is disclosed for use on standard or customized wheelchairs for moving the wheelchair and wheelchair occupant up or down a stairway or stairway-like structure (e.g., a curb) with...
8256541 Transferring device using aero-levitation style  
A transferring system using aero-levitation style and a transferring device using aero-levitation style are provided. The transferring device using aero-levitation style includes one or more pairs...
7988157 Wheelchair stair assist apparatus  
An apparatus is disclosed for use on standard or customized wheelchairs for moving the wheelchair and wheelchair occupant up or down a stairway or stairway-like structure (e.g., a curb) with...
7980337 Stair climbing device  
The present invention provides a device for safely and conveniently conveying an object on a slope. The safety feature includes a fail-safe one-way brake comprising a ratchet wheel, a pawl and a...
7886853 Motorized hand cart for lifting and moving large heavy objects  
A dual-motor handcart for lifting, steering, and transporting a heavy object, such as a snowmobile, by one person, having two motor-powered wheels or trackdrives for moving and steering attached...
7661493 Power assisted steering for motorized pallet truck  
A system for controlling the acceleration, deceleration, braking, travel speed, and power assisted steering of a pallet truck, comprising setting a steering system and a traction system...
7434644 Powered snowboard  
A powered snowboard having a drive assembly mounted thereon, the drive assembly including a frame, a track assembly having a track suspended over multiple wheels, the track assembly being...
7059434 Hand controls for small loader  
A control system for a small work vehicle such as a compact track propelled loader has a control handle that is mounted onto a swinging support plate. The support plate swings about a vertical...
6832659 Loader frame and bolt-on track drive  
A small loader has a central body that is formed as a unitary frame that has spaced apart side walls. The body is supported on drive and support units that are independently assembled, and have...
6626255 Towing vehicle for towing persons moving rollers or gliding bodies  
The invention relates to a towing vehicle which moves on rollers or sliding bodies, for towing persons. The towing vehicle is provided with a motor drive which drives a driving wheel (1) that is...
6449882 Snow removal machine  
A walking-type snow removal machine comprises a snow removing member provided at a front part of a body frame for pushing snow forward, and crawler belts provided on right and left sides of the...
6408962 Convertible sled for transporting large game  
A convertible sled can be dragged silently into the woods by the hunter. Once the hunter has bagged his game, he converts the sled into a track-driven and battery-powered cart. The sled portion is...
6155362 Dolly system with a motorized rolling track  
A dolly system with a motorized rolling track is disclosed. The dolly system includes a dolly having two generally vertically extending side rails. An L-shaped support is provided at its lower end...
5735361 Dual-pole personal towing vehicle  
A personal traction transportation vehicle which includes two gear-motor-wheels which drive a connected chassis forward. The chassis is stabilized by a third trailing caster wheel. The vehicle is...
5147002 Robotic decontamination apparatus  
A remote controlled decontamination apparatus for removing, collecting and remotely disposing of contaminated material, including a complete system that provides a self-propelled vehicle having...
5064011 Crawler-propelled truck  
A crawler-propelled truck includes a chassis frame assembly, an engine mounted on the chassis frame assembly and having a substantially vertical crankshaft, a gear transmission case having an...
4865142 Load carry caterpillar and front wheel driven steerable vehicle  
A load-carrying vehicle is disclosed which has a chassis over which a load-carrying bucket or platform is fixed and which is, itself, mounted on a track drive. A motor assembly is mounted at the...
4771839 Stair-climbing wheelchair carrier  
A stair-climbing wheelchair carrier, comprising a carrier portion comprising a pair of endless belt crawlers, and a handle portion rotatably and detachably provided on the carrier. The handle...
4747457 Platform truck for transporting bulky loads  
A truck for transporting bulky loads, the truck having a frame provided with lateral crawler tracks and an upper load carrying platform movable in relation to the frame; a trolley assembly being...
4729444 Mobile security apparatus  
A method for and apparatus for the transfer of valuables from a collection point through an area accessible to the public to an armored vehicle is disclosed. A mobile security containment...
4688813 Carrier for rescuing patients  
A carrier for rescuing patients having a frame having a pair of lower horizontal portions and upwardly inclined portions adjacent to the horizontal portions at rear end portions thereof.A pair of...
4674584 Stair-climbing wheelchair with stair step sensing means  
A stair-climbing wheelchair having a sensor at the front end thereof for sensing the presence of a stair step or an inclined ramp. The sensor emits signals which reflect from a surface and to a...
4671369 Stair-climbing wheelchair with means for cushioning vertical movements thereof  
A stair-climbing wheelchair having wheels defining a first wheel base and a pair of endless, flexible tracks providing a second wheel base, there being a motor-driven structure for moving the...
4645022 Tracked load carrying vehicle  
A tracked load carrying vehicle comprises a chassis (10); an engine (11) mounted on the chassis for propelling the vehicle; an output shaft (13) driven by the engine; two tracks (14,15) provided...
4627508 Step-negotiating vehicle  
A step-negotiating vehicle comprises a low-level chassis structure with motor-driven tracks, for carrying a load such as a wheelchair. The vehicle is provided with an extension support means to...
4401178 Wheelchair carrier  
A stair climbing wheelchair carrier comprising a handle assembly and base, the handle assembly for securing the wheelchair to the carrier, means for securing the handle assembly to the base, the...
4290618 Hand truck stair tread engaging device  
In a conventional hand truck, a stair tread engaging device having reduced friction and improved mobility provided by a plurality of rollers each rotating freely in its own socket and only on its...
4198103 Differential track assembly for a cable laying machine  
A track assembly for a vehicle comprising powered wheels at each side, and an endless track sleeved over the wheels on each side having solely a smooth driven surface friction contact with the...
4095662 Garden tractor  
A garden tractor of the type steered by a walking attendant having a strong central structure in the form of a pair of rectangular plates rigidly interconnected by a centrally located cylindrical...
4027889 Stair-climbing carrier  
A tracked, stair-climbing carrier for carrying loads up and down stairs and across floors. The carrier includes a frame mounting a pair of parallel endless tracks at its sides for moving the frame...
4026373 Hill plower  
A pedestrian controlled tractor particularly suitable for use in working farmland where the ground surface is rough and hilly. The tractor in its preferred form has a relatively narrow endless...
3876022 Stairway-climbing cart  
A stairway-climbing cart for lifting loads comprises a carrier frame, a pair of driven belt-crawlers disposed on both sides of the carrier frame, a driving belt-crawler disposed on the central...
3804275 STAIR CLIMBER MOVING METHOD  
A stair climber moving system (FIGS. 1-2) for moving a load up flights of stairs (FIGS. 9A-9H) which includes a basic tractor unit, a load mounting platform attached to the tractor which allows...
3789941 TRANSPORTERS  
The invention is concerned with a pedestrian-controlled transporter. The transporter is arranged to traverse the ground on a motor-driven endless track upon which a load-carrying structure is...
3713501 POWER HAND TRUCK  
A hand truck frame mounts an endless chain belt having a perpendicularly extending bulb-like member connected thereto. As the belt rotates, the bulb-like member engages a step and causes the hand...
3605927 POWERED ENDLESS TRACK VEHICLE  
3583506 COMBINED AUXILIARY THROTTLE AND SAFETY SWITCH FOR SNOWMOBILE  
Extensible handles are carried on the handlebar and at the rear of a snowmobile and coupled to a linear actuator for operating both an ignition switch and a carburetor throttle valve with the...
3512658 POWER-OPERATED,LOAD-CARRYING STAIR-CLIMBING DEVICE  
3370664 Motorized stair-climbing shopping cart  
3362496 Power driven dolly  
3333651 Crawler-track automotive vehicle  
3330370 Stair climbing device  

Matches 1 - 50 out of 67 1 2 >