| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 180022000 | Five or more wheels | 40 |
| 20080264702 | POWER WHEELCHAIR - A power wheelchair includes a frame, on which a pair of front wheel sets, a pair of middle wheel sets, a pair of rear wheel sets and a pair of elastic devices are provided. Each of the front wheel sets includes a front wheel mount having a first connection portion pivoted to the frame, and a second connection portion connected to a front wheel. Each of the middle wheel sets includes a middle wheel mount having a first connection portion pivoted on the frame, and a second connection portion, connected to a middle wheel. The elastic device are provided between the front wheel mounts and the middle wheel mounts respectively to cushion a swing of the front wheel set and the middle wheel set relative to the frame. | 10-30-2008 |
| 20090078480 | Low Surface Impact Skid Steered All Terrain Vehicle - A low surface impact, skid steered, all terrain vehicle is disclosed which has a rectangular frame from the opposite sides of which sets of tandem mounted, independently movable control arms are suspended. An hydraulic motor driven wheel axle is mounted on the lower end of each control arm with at least one pneumatic wheel mounted upon each axle. Compressible springs are located between the frame and each control arm so as to bias the control arms and wheels supported therefrom downwardly to a position in which friction plates mounted upon the control arms contact and limit movement of each set of control arms toward one another. Separate hydraulic control circuits having separate drive pumps drive the hydraulic motors on each side of the vehicle. Each of these circuits is operable in either a series connected mode or a parallel connected mode. In the series connected mode, each circuit is operable to provide substantially equal fluid flow and pressure to all of the drive motors on one side of the vehicle so as to obtain equal wheel speed and minimize wheel slippage with the ground. With the circuits operating in the parallel connected mode, the drive motors on front and rear sets of wheels receive differing fluid flow and pressure with the result that when the wheels on opposite sides of the vehicle are driven in opposite directions, skid steering of the vehicle is improved over that obtainable in the series connected mode. | 03-26-2009 |
| 20090255739 | Power wheelchair - A power wheelchair includes a base frame and a seat frame. The base frame includes front and rear frame members, a pair of front wheels connected rotatably to the front frame member, a pair of rear wheels connected rotatably to the rear frame member, and a pair of mid-wheels connected rotatably to the front frame member and disposed between the front and rear wheels. The seat frame is connected to the rear frame member. The rear frame member is connected pivotally to the front frame member, and extends above the front frame member. | 10-15-2009 |
| 20120152629 | HYDRAULIC SYSTEM HAVING LOAD LOCK VALVE - A load lock valve for a hydraulic system is disclosed. The load lock valve may have a block with a first bore, and a body disposed within the first bore. The body may have a second bore, and first and second first radial ports in fluid communication with the second bore. The body may also have a valve seat, and a poppet disposed within the body. The poppet may have a nose end, a control end, a balance passage extending from the control end toward the nose end and terminating short of the nose end, and a third radial port in fluid communication with the balance passage. The load lock valve may further have a spring configured to bias the poppet toward the first opening. The control end of the poppet is fluidly communicated with the first radial port when a sealing surface at the nose end is against the valve seat. | 06-21-2012 |
| 20140138170 | OBSTACLE TRAVERSING WHEELCHAIR - A wheelchair suspension is provided. The wheelchair suspension includes a frame, a front caster pivot arm, a drive assembly, and a rear caster. The front caster pivot arm is pivotally connected to the frame. The front caster is coupled to a front end of the front caster pivot arm. The drive assembly is pivotally connected to the front caster pivot arm. The drive assembly comprises a drive wheel and a motor that drives the drive wheel. Torquing of the drive wheel by the motor in a forward direction causes the drive assembly to pivot with respect to the front caster pivot arm such that the drive wheel moves forward toward the front caster and a distance between a support surface and the connection between of the drive assembly and the front caster pivot arm increases. | 05-22-2014 |
| 20140305720 | FRAME APPARATUS FOR LIGHTWEIGHT ROLLATOR - A frame apparatus for a lightweight rollator has a front frame and a rear frame. The front frame has a base and a handle frame. The base has two connecting tabs, two locking elements and a mounting frame. The handle frame is rotatably connected to the base and has a front wheel and two connecting arms. The connecting arms are formed on and protrude from the handle frame and are pivotally connected to the base between the connecting tabs. The rear frame is connected to the front frame and has a bottom mount, two rear wheels and at least one driving motor. The bottom mount is connected to the mounting frame and has a guiding rod and an engaging shaft. The rear wheels are rotatably connected to the bottom mount. The at least one driving motor is mounted on the bottom mount and is connected to the rear wheels. | 10-16-2014 |
| 20150075882 | WHEELCHAIR - The present application relates generally to conveyances and, more particularly, to wheelchairs. In one embodiment, a wheelchair includes a seat assembly coupled to a chassis. The chassis includes a frame having a rear wheel support member, one or more front wheel support members extending in a forward direction from the rear wheel support member, and a seat support member. The rear wheel support member comprises a central portion and left and right portions extending downward from the central portion. The wheelchair also includes one or more drive wheels for propulsion of the wheelchair, a set of front wheels for supporting the wheelchair, and a shrouding system for at least partially covering the frame and other components of the wheelchair. | 03-19-2015 |
| 20150336625 | One-dimensional climbing vehicle with resilient guide mechanism - This patent discloses a climbing vehicle capable of high payload to weight ratio and capable of climbing surfaces with geometric variations and traveling along a single dimension. More specifically, this invention applies to a vehicle well adapted to climbing non-planar surfaces such as pipes or other structural members while traveling along a single dimension, for example traveling parallel to the axis of the pipe. The climbing vehicle makes contact with the climbing surface through drive wheels and a trialing arm. The adhering members are aligned with the primary axis and are rigidly attached or contained in a suspension that is able to conform to a large range of surface irregularities while providing push and pulling forces between the adhering members and the climbing vehicle chassis to uniformly distribute the climbing loads on the adhering members. The result is a climbing machine that can accommodate large surface irregularities while maximizing the climbing payload with a minimum number and size of adhering members. | 11-26-2015 |
| 20160022516 | OBSTACLE TRAVERSING WHEELCHAIR - A wheelchair suspension is provided. The wheelchair suspension includes a frame, a front caster pivot arm, a drive assembly, and a rear caster. The front caster pivot arm is pivotally connected to the frame. The front caster is coupled to a front end of the front caster pivot arm. The drive assembly is pivotally connected to the front caster pivot arm. The drive assembly comprises a drive wheel and a motor that drives the drive wheel. Torquing of the drive wheel by the motor in a forward direction causes the drive assembly to pivot with respect to the front caster pivot arm such that the drive wheel moves forward toward the front caster and a distance between a support surface and the connection between of the drive assembly and the front caster pivot arm increases. | 01-28-2016 |
| 20160090134 | BUS - A bus is provided, including: a frame assembly including a front frame, a rear frame and a hinge turntable therebetween; carriages including a front carriage having a front carriage body and a front carriage floor, and a rear carriage having a rear carriage body and a rear carriage floor; a front axle and a middle axle disposed at a bottom of the front frame; a rear axle disposed at a bottom of the rear frame; a first group of battery packs including a first battery pack disposed within a rear cabin in the rear of the rear carriage body and a second battery pack disposed on the rear frame; a second group of battery packs disposed on upper surfaces of top roof of the front and rear carriage bodies; a third group of battery packs disposed on the front carriage floor and between the front axle and the hinge turntable. | 03-31-2016 |
| 20160101801 | CARRYING APPARATUS - A carrying apparatus provides a self-powered, rechargeable, technologically adaptable transport vehicle, such as a stroller. The apparatus includes efficient seating and storage capacities for efficiency items, such as pertinent baby supplies. Because the apparatus is self-powered, the physical stress of carrying at least one item is reduced. Furthermore, the apparatus uses technology to maintain perpetual power for operation, and to regulate and monitor the propulsion of the apparatus during transport. The apparatus may be pushed or pulled in multiple directions at varying velocities. The apparatus includes braking and accelerating capacities. A frame portion supports a seat portion, such as a buckled baby seat; a storage portion, such as a cargo mesh. A rechargeable power source powers a motor that turns a drive shaft for propulsion. Brakes position at the wheels. A control portion provides a display and levers for accelerating and decelerating. | 04-14-2016 |
| 20160144922 | SIX-WHEEL ALL-TERRAIN VEHICLE - A vehicle has a frame, a motor connected to the frame, two front wheels operatively connected to the frame, two intermediate wheels operatively connected to the frame, the two intermediate wheels being disposed rearward of the two front wheels, two rear wheels operatively connected to the frame, the two rear wheels being disposed rearward of the intermediate wheels, a driver seat connected to the frame, a passenger seat disposed at least in part rearward of the driver seat, the driver seat and the passenger seat being straddle seats, and a cargo box connected to the frame, the passenger seat being disposed at least in part forward of the cargo box. | 05-26-2016 |
| 180023000 | Driven steering wheel type | 3 |
| 20100230186 | CAR - A car includes a car body having a bottom portion, a wheel that is rotatable, and a supporting member for supporting the wheel, the supporting member being provided to the bottom portion. At least eight pairs of the wheel and the supporting member are provided. The supporting member has a first supporting portion for supporting the wheel rotatably, a second supporting portion for supporting the first supporting portion so that a direction of the wheel supported by the first supporting portion can be changed, and a turning portion that is rotatable about a rotation axis with its axial direction along a direction orthogonal to the bottom portion, the turning portion being provided to the bottom portion. The turning portion supports the second supporting portion so that a distance between the wheel and the bottom portion can be changed, and a position of the wheel can be moved by a rotation of the turning portion in a state that the distance is maintained. | 09-16-2010 |
| 20130056288 | Omni-Directional Wheel Assembly and Omni-Directional Vehicle - An omni-directional wheel assembly for a vehicle that includes a wheel, at least one lower suspension link and an upper attachment joint. Both the at least one lower suspension link and the upper attachment joint are attachable to the vehicle. The wheel is able to rotate at 360°, to steer the vehicle, around a pivot line positioned by the at least one lower suspension link and the upper attachment joint once attached to the vehicle. A projection of the pivot line onto a vertical projection plane comprises a vertical axis passing through a contact point between the wheel and ground defining a caster angle with the vertical axis, where whatever the orientation of the projection plane, the omni-directional wheel assembly includes an adjustment means able to adjust the caster angle within a predetermined range. | 03-07-2013 |
| 180024000 | Stub-axle type | 1 |
| 20100006355 | Vehicle having longitudinally set-apart wheel supports - One embodiment includes a vehicle defined by a first side, a second side, and a longitudinal axis between the sides. The vehicle includes a plurality of vehicle supporting wheels consisting of a first wheel proximate the first side, a second wheel proximate the second side, and a plurality of tertiary wheels. The first and second wheels are not symmetrical with one another, nor with any tertiary wheel, across the longitudinal axis. | 01-14-2010 |
| 180240020 | Displaceable wheel shifts or proportions load | 9 |
| 20090205883 | Payload-carrying motor vehicle with tag axle having disableable brakes - A payload-carrying motor vehicle comprises a steer axle, at least one drive axle and a tag axle. All of the axles have wheels with tires and air brakes and a tag axle suspension system is adapted to suspend the tag axle in an active condition wherein the tag axle is pivotal about a first axis parallel to the other axles and also about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and wherein the tag axle is forced to urge the tag axle tires against a road surface to aid in supporting the vehicle. An air brake system is adapted to operate the air brakes of all the wheels and a tag axle operating system is adapted to establish the tag axle in the active condition while enabling operation of the air brakes of the tag axle wheels and to disable operation of the air brakes of the tag axle wheels when the tag axle pivots about the second axis and reaches a predetermined tilt angle in maintaining contact of the tag axle tires with a road surface. | 08-20-2009 |
| 20090205884 | Payload-carrying motor vehicle with tag axle having primary and secondary suspension - A payload-carrying motor vehicle comprises a frame, a steer axle, tandem drive axles, at least one pusher axle located between the steer axle and drive axles, and a tag axle. The axles each have wheels with tires and a steer axle suspension system suspends the steer axle from the frame, a drive axle suspension system suspends the drive axles from the frame, a pusher axle suspension system including gas springs suspends the pusher axle from the frame, and a tag axle suspension system including a primary tag axle suspension and a secondary tag axle suspension suspends the tag axle from the frame behind the drive axles. The primary tag axle suspension is adapted to suspend the tag axle for pivotal movement about a first axis parallel to the other axles and includes actuators incorporating a gas spring adapted to apply a predetermined force on the tag axle urging pivotal movement of the tag axle about the first axis in a direction forcing the tag axle tires to bear against a road surface at a location rearward of the drive axles to aid in supporting the frame together with the other axles. The secondary tag axle suspension is adapted to support the tag axle for tilting movement about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and includes gas springs having a significantly higher gas charging pressure and significantly less spring compliance than the gas springs in the primary tag axle suspension operatively arranged on opposite sides of the second axis between the primary tag axle suspension and the tag axle so as to support only lateral loads on the frame. | 08-20-2009 |
| 20090205885 | Payload-carrying motor vehicle with tag axle having force relievable suspension - A payload-carrying motor vehicle comprises a steer axle, at least one drive axle and a tag axle. All of the axles have wheels with tires and brakes and a tag axle suspension system is adapted to suspend the tag axle in an active condition wherein the tag axle is pivotal about a first axis parallel to the other axles and also about a second axis located equidistant from the tag axle wheels and laying in a plane at right angles to the first axis and wherein the tag axle trails the drive axle and is forced to urge the tag axle tires against a road surface to aid in supporting the vehicle. A tag axle operating system is adapted to establish the tag axle in the active condition and relieve the force on the tag axle when the tag axle pivots about the second axis and reaches a predetermined tilt angle in maintaining contact of the tag axle tires with a road surface. | 08-20-2009 |
| 20130248261 | POWERED WHEELCHAIR WITH ARTICULATING DRIVE WHEELS - A seated vehicle comprises a frame, one or more first wheels at a first position relative to the frame, one or more second wheels at a second position relative to the frame, and a wheel-positioning system. The wheel-positioning system includes one or more arms pivotally coupled to the frame, and an adjustment mechanism operatively coupled to a first position of the one or more arms. The one or more first wheels are operatively coupled to a second position of the one or more arms. The adjustment mechanism moves the one or more arms between a first position and a second position so that the one or more first wheels are in a first position relative to the one or more second wheels when the one or more arms are in the first position and are in a second position relative to the one or more second wheels when the one or more arms are in the second position. | 09-26-2013 |
| 20130341106 | STAIR-CLIMBING APPARATUS - The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform. | 12-26-2013 |
| 20140326522 | POWERED WHEELCHAIR WITH ARTICULATING DRIVE WHEELS - A seated vehicle comprises a frame, one or more first wheels at a first position relative to the frame, one or more second wheels at a second position relative to the frame, and a wheel-positioning system. The wheel-positioning system includes one or more arms pivotally coupled to the frame, and an adjustment mechanism operatively coupled to a first position of the one or more arms. The one or more first wheels are operatively coupled to a second position of the one or more arms. The adjustment mechanism moves the one or more arms between a first position and a second position so that the one or more first wheels are in a first position relative to the one or more second wheels when the one or more arms are in the first position and are in a second position relative to the one or more second wheels when the one or more arms are in the second position. | 11-06-2014 |
| 20150034399 | Vehicle Fuel Economy by Optimizing Effective Rolling Tire Resistance - The subject matter of the present invention relates generally to a vehicle that has axles with tires mounted thereon with at least one axle that is a lift axle, and more specifically, to a method that optimizes the effective tire rolling resistance by adjusting the load on the tires, resulting in an improvement in the fuel economy of the vehicle. According to one embodiment, the method takes into consideration the rolling resistance characteristics of the tires placed onto the axles of the vehicle and provides an algorithm for optimizing their rolling resistance by raising or lowering the lift axle. | 02-05-2015 |
| 20150107917 | Suspension Structure for an Electric Wheelchair - A simply structured suspension structure for an electric wheelchair includes a frame, two drive units, two front guide units, two front shock absorbers, two anti-roll units, and two rear shock absorbers. The two front guide units are located at both sides of the frame and each include a front guide wheel, a front suspension arm and a torsion spring. The two front and rear shock absorbers are connected to the frame. The two anti-roll units are located at both sides of the frame. When the front guide arms drive the front guide wheels to pivot, the torsion springs can produce a reaction force to prevent the frame from rolling over, improving safety. When the suspension structure runs across an uneven bumpy road, the front and rear shock absorbers can ease the shock imposed on the frame, enhancing sitting comfort. | 04-23-2015 |
| 20160074263 | FRONT SUSPENSION SYSTEM FOR AN ELECTRIC WHEELCHAIR - A front suspension system for an electric wheelchair is disposed between the frame of the electric wheelchair and each of the front wheels, and has two ends pivoted to the front pivot shaft and a corresponding one of the front wheels, respectively. An elasticity resistance member is sleeved onto the front pivot shaft and has two ends connected to the front wheel retainer and the abutting member of the frame, respectively. When the front wheels encounters bumpy road and makes the front wheel retainer pivot, the elasticity resistance member will be compressed to produce a reaction force toward the front wheel retainer and the abutting member of the frame, respectively, so that the front wheel retainer is pressed down to keep pressing against the flat bearing surface, and the frame is also pressed downward to prevent tipping backward. | 03-17-2016 |
| 180240040 | With differential housing integrally fixed to vehicle frame | 2 |
| 20080245585 | Vehicle Drive Line - A vehicle includes a front axle and rear axle, where at least one of said axles is driven, an engine arranged in the vicinity of the rear or front end of said vehicle, the engine including an output shaft connected to the driven axle via a transmission system for transmitting driving power from the engine to the driven axle. The transmission system includes at least a multiple-speed gearbox for causing variable gear ratio between the engine and driven axle. The engine and at least a part of the gearbox are arranged on each side of the driven axle, and are connected only via a power transmitting device so that an engine block of the engine is separated from a gearbox housing of the gearbox. | 10-09-2008 |
| 20150090505 | STRUCTURAL ELECTRIC TANDEM AXLE MODULE - A structural electric tandem axle module ( | 04-02-2015 |
| 180240060 | Plural propelling motors | 7 |
| 20090166106 | Vehicles Having Tandem Axle Assembly - A vehicle, such as a heavy truck, includes a tandem axle assembly supported with respect to a frame. The tandem axle assembly has first and second axle assemblies which each include respective left and right wheels. A third axle assembly is supported with respect to the frame and includes left and right wheels which are steerable by an operator to facilitate steering of the vehicle. The engine is coupled with the first axle assembly. A motor/generator is coupled with the second axle assembly. A controller is attached to each of the motor/generator and an energy storage device. | 07-02-2009 |
| 20130180787 | STAIR-CLIMBING APPARATUS - The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform. | 07-18-2013 |
| 180240070 | Separate driving motor for each drive wheel | 5 |
| 20090044991 | High efficiency vehicle - Here invented are efficient road vehicles having special aerodynamic shapes, with stabilizing devices that enable aerodynamic efficiency. An embodiment is a articulated vehicle that is tall and narrow. It includes a carriage part that encloses a driver and passenger riding in tandem. This car is only wide enough for persons seated in single file, so it has very low projected frontal area compared with typical cars. Further, the narrow width makes a body shaped like an airship practical, where that shape is characterized by a very low drag coefficient in free flow conditions. Since this body is elevated on struts to enable such free flow aerodynamic conditions, the drag coefficient of the airship is made applicable to this road vehicle. Because this car has both low frontal area and low drag coefficient it will require minimal energy for high speed operation. | 02-19-2009 |
| 20090071732 | Wheel driving assembly of a moving apparatus - A wheel driving apparatus for a moving apparatus is provided. The wheel driving apparatus includes a wheel, a driving motor to generate a driving power to rotate the wheel, a gear box to transmit the rotational force of the driving motor to the wheel, and a guide shaft movable vertically with respect to the base member, wherein the wheel, the driving motor, the gear box, and the guide shaft are connected integrally with each other to move vertically with respect to the base member in unison. | 03-19-2009 |
| 20120080244 | ELECTRIC-POWERED SCOOTER WITH INDEPENDENT GROUND ENGAGING MECHANISMS - An electric-powered scooter with independent ground engaging mechanisms is equipped with two powered wheels pivoted on a pair of rotatable racks respectively, and each of the rotatable rack is pivoted to a first shaft protruded from the vehicle frame of the electric-powered scooter. When one of the ground engaging wheels is bumped against an obstacle and bouncing upward would cause the rotatable racks to rotate and lowering the respective powered wheels immediately, by this way to enhance the traction of powered wheels over uneven terrain. | 04-05-2012 |
| 20120152630 | CAMERA CRANE MOBILE BASE - A mobile base for a camera crane includes a front left drive motor assembly, a front right drive motor assembly, a rear left drive motor assembly, and a rear right drive motor assembly, attached to a chassis. Each drive motor assembly may include an electric motor linked to an axle via a gear reduction and at least one wheel on the axle. A middle left drive motor assembly and a middle right drive motor assembly may each also include an electric motor linked to an axle via a gear reduction, at least one wheel on the axle, and a spring suspension assembly attached to the chassis and supporting the axle. An electrical power supply on the chassis may be linked to each of the electric motors. | 06-21-2012 |
| 20140284120 | DUMP TRUCK - A dump truck including a suspension system and a steering system. The suspension system includes a frame and a plurality of hydraulic suspensions, and every two of the hydraulic suspensions are aligned on one axle. The suspension system includes at least two axles. The frame includes a middle box beam and spars protruding from two sides of the middle box beam. The hydraulic suspensions include a pivotal bearing, rotating frame, swing arm, hanging cylinder, oscillating axle, and wheels. The upper end of the rotating frame is arranged in the lower surface of the spar of the frame via the pivotal bearing. The upper end of the rotating frame is non-rigidly connected to the swing arm. A cylindrical pin is disposed at the front end of the swing arm. The cylindrical pin is sleeved in a pinhole of the oscillating axle. | 09-25-2014 |
| 180240080 | Each wheel positively driven | 4 |
| 20080302586 | Wheel set for robot cleaner - The present invention provides a wheel set for robot cleaner, which is installed under the main body of a robot cleaner for supporting the main body to move on a floor. The wheel set comprises two driving wheels. Each of the driving wheels includes a power source, two transmission mechanisms and two wheels. Each of the two transmission mechanisms is linked correspondingly with one of the two wheels and the power source so that the wheels are driven by the power source to traverse obstacles on the floor and do not scrape the floor. | 12-11-2008 |
| 20160144712 | ALL-TERRAIN VEHICLE HAVING SIX WHEELS - A vehicle has a frame, a motor, two front wheels, a first driveshaft operatively connected to the motor, and a first gear assembly operatively connected to the first driveshaft. The first gear assembly includes a first bevel gear operatively connected to the first driveshaft, a second bevel gear meshed with the first bevel gear, and a third bevel gear meshed with the second bevel gear. Two intermediate wheels are operatively connected to the second bevel gear. A second driveshaft is operatively connected to the third bevel gear. A second gear assembly is operatively connected to the second driveshaft. Two rear wheels are operatively connected to the second gear assembly. | 05-26-2016 |
| 20160250921 | OUTPUT TRANSFER GROUP FOR MOBILE MACHINE POWERTRAIN | 09-01-2016 |
| 20160250922 | OUTPUT TRANSFER GROUP FOR MOBILE MACHINE POWERTRAIN | 09-01-2016 |
| 180240090 | With interaxle differential | 1 |
| 20120000719 | VEHICLE - A vehicle is disclosed. The vehicle may include a base portion and a modular portion. The base portion may be a four wheel vehicle having an operator area with seating for at least two occupants in a side-by-side arrangement. The modular portion may be coupled to the base portion resulting in a six wheel vehicle. The wheels of the modular portion may be powered by an engine of the base portion. | 01-05-2012 |
| 180240100 | With drive interrupt means to either tandem drive wheel | 1 |
| 20090321153 | Drive train for a motor vehicle and method of operating a drive train of a motor vehicle - In a drive train for a motor vehicle having at least first and second drive axles each provided with two drive wheels for moving the motor vehicle, wherein the drive train comprises a first drive unit connected to the first drive axle and a second drive unit connected to the second drive unit for driving the wheels of the drive axles or, respectively, being driven thereby, the wheels of the first and second drive axles are operable independently of each other and clutch elements are arranged in the drive train between the wheels of the second axle and the second drive unit for mechanically disconnecting the second drive unit and the wheels of the second drive axle. | 12-31-2009 |
| 180240110 | Driven tandem wheels | 1 |
| 20100012401 | Tandem wheel arrangement - A machine ( | 01-21-2010 |
