Class / Patent application number | Description | Number of patent applications / Date published |
180600700 | Endless flexible track | 23 |
20080308324 | DRIVE UNIT FOR AN INSPECTION VEHICLE AND ALSO INSPECTION VEHICLE WITH SUCH A DRIVE UNIT - A drive unit ( | 12-18-2008 |
20090166101 | SKID STEERED ALL TERRAIN VEHICLE - A skid steered all terrain vehicle (ATV), comprising two driving units for the wheels or tracks on both sides of the vehicle and a differential steering device with a differential gear, wherein the ATV is a light ATV (LATV) and wherein the differential steering device is designed to produce a defined differential speed of the two drive units of the vehicle related to the steering angle of the steering device regardless to the surface condition where the vehicle is driving, whereby an additional steering drive acts on the differential gear. | 07-02-2009 |
20090260902 | Suspension Unit - A suspension unit, for example for a track-laying vehicle, comprises an oil-filled cylinder within which a piston, connected to a piston rod, is provided. The cylinder | 10-22-2009 |
20090308667 | Drive Unit for Trailers and Caravans - When, according to the invention, a drive unit for trailers or caravans is arranged such that it comprises a chassis ( | 12-17-2009 |
20100059297 | TRACK SUSPENSION - A flexible, non-resilient strap of the tandem wheel suspension interconnects the vehicle frame and one of the rocker arms of an endless track vehicle, limiting the motion of the rocker arm in the direction of the terrain but permitting freedom of motion in an upward direction away from the terrain. The rocker arms share a support axle mounted to the vehicle frame, and each rocker arm is independently movable about the support axle. A shock-absorbing element, located in the vicinity of the strap, is preferably similarly attached between the frame and the same rocker arm to dampen the motion of the rocker arm in the direction of the terrain while permitting freedom of motion in an upward direction away from the terrain. In one embodiment, a small idler roller is positioned slightly above the endless track at a location between the two tandem wheel suspensions supporting the endless track. | 03-11-2010 |
20100065345 | METHOD AND APPARATUS FOR CONTROLLING TRACKED VEHICLES - Apparatus for controlling a track on a tracked vehicle may comprise a drive system, a clutch, a brake, and a track control system to operate the clutch and the brake. A control signal generator operatively associated with the track control system produces control signals that vary at a first rate to cause the track control system to transition the clutch from an engaged state to a disengaged state and produces control signals that vary at a second rate to cause the track control system to transition the brake from an initial application state to a full application state, the second rate being less than the first rate. | 03-18-2010 |
20100139993 | Lobed Bushing For Track Assembly And Track-Type Machine Using Same - A lobed bushing is provided for a track assembly of a track-type machine. The track assembly includes a first chain and a second chain coupled together with a track pin. A bushing, defining a longitudinal axis, includes a central bore oriented along the longitudinal axis and extending from a first end of the bushing to a second end of the bushing for receiving the track pin. The bushing includes a first lobe positioned at a first location about the longitudinal axis and a second lobe positioned at a second location about the longitudinal axis that is less than about 180° from the first location. The first end of the bushing has a substantially cylindrical shape. | 06-10-2010 |
20100170728 | STEERING SYSTEM FOR TRACKED VEHICLES - A steering system for tracked vehicles having two brake circuits which is activated after a failure of the primary steering mechanism. The steering system includes a steering switch (L) that can be controlled by a steering axle which, in the event of primary steering system failure, acts upon the brakes of the vehicle in such a manner that rotation of the steering axle results in a braking action upon a track on the inside of a curve. | 07-08-2010 |
20110048814 | Final Drive Assembly - A final drive assembly, particularly for a skid steered vehicle, comprises a planetary gear reduction mechanism of which the input is through the sun gear | 03-03-2011 |
20110079451 | Strength Track Bushing - An improved strength track bushing ( | 04-07-2011 |
20110108332 | Dual-Sprocket Track Drive - A drive for a tracked vehicle supported by a pair of sprocket-driven tracks that receive divided drive torque from the vehicle engine includes a pair of track differentials that are each associated, respectively, with one of the tracks. Each track includes two separate drive sprockets located, preferably, at the front and rear of the track, and the divided torque delivered to each track differential is further divided between the respective front and rear drive sprockets of each track. The track differentials maintain track wrap about the drive sprockets so that drive torque and spike-like forces generated by the momentary loosening and tightening of the track in response to variations in the terrain are shared between an optimal number of drive sprocket teeth at all times. Drive and shock loads borne by the track lugs are significantly reduced and track life is significantly increased. | 05-12-2011 |
20130092458 | TRACKED VEHICLE - The invention is a tracked vehicle comprising a platform having a right and left side and a central axis pivotally mounted on a housing. The platform is pivotally movable between a first position wherein the right side is below the left side and a second position wherein the left side is below the right side. The vehicle includes a pair of parallel right and left tracks mounted to the housing below the platform, the right track and the left track coupled to a right track drive and a left track drive, respectively, the right and left track drives operatively coupled to the platform. When pivoted towards the first position, the left track is driven faster than the right track. When pivoted towards the second position, the right track is driven faster than the left track. In a central platform position the left and right drives operate at the same speed. | 04-18-2013 |
20130153308 | TRACKED MOBILITY DEVICE - A tracked mobility device includes: a) a frame supporting a seat; b) a pair of track drives connected to the frame, with each track drive including a powered center drive wheel, a front roller, a rear roller, and a flexible track, with the center drive wheel having a diameter that is at least 50% greater than the diameter of either the front roller or the rear roller, and c) a rear wheel assembly connected to the frame, with the rear wheel assembly having three wheels sharing a common axle, with the diameter of the center rear wheel being at least 10% larger than the diameter of the two outer rear wheels; d) a source of power to power said center drive wheels; and e) a controller effective for controlling the speed and direction of rotation of each of the track drives. | 06-20-2013 |
20130192905 | Configuration of a two-track tractor - A tractor configuration includes a mainframe structure, a control station having a means of controlling the tractor, an undercarriage system having one left side and one right side track assembly, a wheel mechanism containing one or more wheels located forward of the track assemblies, a power train for forcing both track assemblies to travel at the same or different speeds, a controller responsible for exerting force to transfer vertical load back and forth between the front portion of the track assemblies and the wheel mechanism and controlling the amount of weight carried by the wheel mechanism. The controller causes or allows the wheel or wheels of the wheel mechanism to follow the tractor's curved path caused by track speed difference. | 08-01-2013 |
20130333958 | CRAWLER VEHICLE AND RELATIVE CONTROL METHOD - A crawler vehicle having a first and second track driven by a first and second drive wheel respectively; an internal combustion engine; a mechanical power transmission assembly extending from the internal combustion engine to the first and second drive wheel; an electric power transmission assembly; a mechanical power connection configured to transfer energy between the mechanical power transmission assembly and the electric power transmission assembly; and at least one mechanical power transmission configured to transfer energy between the electric power transmission assembly and the mechanical power transmission assembly; the electric power transmission assembly extending from the mechanical power connection to the mechanical power transmission. | 12-19-2013 |
20140048342 | Aircraft Tug Vehicle - An improved aircraft towing vehicle includes a base plate, a controller and two drive motors supported by two track assemblies. A pivoting wheel constraint mechanism rests on the base plate and includes a front roller mount, a rear roller mount and a linkage connecting the front roller mount and the rear roller mount. When the rear roller mount is pushed or otherwise urged backward, the linkage causes the front roller mount to pivot upward to confine an aircraft wheel on the base plate. A latch keep is also connected to the base plate for holding the rear roller mount in the backward position and locking the wheel constraining mechanism for moving an aircraft. | 02-20-2014 |
20140083781 | HYDRAULIC EXCAVATOR - A hydraulic excavator includes an undercarriage having a crawler and a rotating superstructure. The rotating superstructure includes a plate-shaped rotating frame, an engine, a fuel tank a counterweight and a fuel line. The engine is mounted inside the rotating frame. The fuel tank is disposed on one side of the engine. The counterweight is supported on the rotating frame to the rear of the engine, and disposed so that a bottom end portion faces a rear end surface of the rotating frame with a gap interposed therebetween and the gap is open to the atmosphere. The fuel line is connected to the fuel tank and disposed in the gap between the rear end surface of the rotating frame and the bottom end portion of the counterweight. | 03-27-2014 |
20140299391 | PATIENT TRANSPORT DEVICES - Embodiments of a patient trans- port device comprise a rigid structural member; a patient support member coupled to the rigid structural member, a propulsion assembly coupled to the rigid structural member, wherein the rigid structural member comprises a motor operable to oscillate between frontward rotation and backward rotation, first and second continuous tracks responsive to the motor and rotatably coupled to the rigid structural member, and a power source configured to energize the motor and exchange electrical energy with the motor, and at least one controller communicatively coupled with the power source and programmed to execute machine readable instructions to oscillate the motor between frontward rotation and backward rotation, the oscillation of the motor being operable to cause the first continuous track and the second continuous track to stop. | 10-09-2014 |
20150122557 | CONTINUOUSLY VARIABLE TRANSMISSION - A driver pulley assembly for a continuously variable transmission (CVT) includes a roller weight guide, having an inner and outer periphery, adapted to be mounted on the main shaft of the CVT. A plurality of ramp windows extend radially along the roller weight guide. A pair of guide rails extend along opposite edges of each ramp window. A plurality of roller weights, mounted on the pair of guide rails, is adapted to move along the pair of guide rails in a radial direction of the roller weight guide. A ramp structure, coinciding with the ramp window, extends in the radial direction of the roller weight guide and abuts the plurality of roller weights. The roller weighs are adapted to move radially outwards along the ramp structure with increasing rotational speed of the roller weight guide. The ramp structures have ramp profiles. CVT systems and vehicles including the driver pulley assembly are also included. | 05-07-2015 |
20150315769 | SINGLE PEDAL PROPULSION SYSTEM FOR STRAIGHT TRAVEL OF WORK VEHICLE - A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second traction devices together via one of the first and second steering inputs. | 11-05-2015 |
20160068185 | Steerable crawler track - A steerable crawler track for an agricultural utility vehicle such as, a tractor or a self-propelled harvesting machine has a left-side track roller unit, a right-side track roller unit, a differential having a transmission input driven by an engine, a first transmission output for driving the left track roller unit, and a second transmission output for driving the right track roller unit and a hydraulic transmission having a variable transmission ratio (i). The transmission outputs of the differential are coupled to one another via the hydraulic transmission such that the ratio of the rotational speeds (n | 03-10-2016 |
20160096548 | ELECTRIC DRIVE MOTOR MODULE - An electric drive system including an electric drive motor module. The electric drive motor module includes an electric drive planetary gear assembly, and an electric motor having a rotor shaft. The electric drive system further includes a first output member, a second output member, and a reaction member operatively associated with the rotor shaft. | 04-07-2016 |
20160097185 | REAR ENTRY ELECTRIC DRIVE MOTOR MODULE - A method for retrofitting a high drive track-type tractor with a rear entry electric drive motor module. The method includes inserting the rear entry electric drive motor module into a frame housing. The rear entry electric drive motor module includes an electric drive planetary gear assembly, and an electric motor. The method further includes attaching a reaction member to the rear entry electric drive motor module. | 04-07-2016 |