Abstract: A traveling and turning device for a construction machine is provided, which includes a left driving motor and a right driving motor driven by hydraulic fluid, a left main control valve and a right main control valve controlling movement of the left driving motor and the right driving motor, respectively, and a left pedal and a right pedal adjusting the operation state of the left main control valve and the right main control valve, respectively.

Abstract: A differential steering control system and method for a machine includes a motor for steering the machine in a leftwards or a rightwards direction, a continuously variable transmission for moving the machine in a forwards or a backwards direction, and a control unit connected to the motor and the continuously variable transmission. The control unit determines the speed of the continuously variable transmission and based upon the determined speed, modifies a speed of the motor in order to achieve/maintain a desired turn radius for the machine.

Abstract: A suspension for a cab base on the frame of a swather tractor includes four dampened springs at the four corners with three links each pivoted on one end of the frame and the other end on the base. The links include two parallel links in the fore and aft direction parallel to the mechanical speed control link arm and one side to side link which constrain movement of the base against fore and aft movement and side to side movement parallel to the mechanical steering control link arm. This arrangement restricts movement of the base while allowing roll and pitch movements of the cab structure with the links arranged such that steering and ground speed are substantially unaffected when the cab moves on the suspension.

Abstract: There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block.

Abstract: A vehicle with a omni-directional cab having a circular frame revolvably coupled to a chassis having an axle, wheels and passenger seats. Two independent drive wheels located on an axis through the center of the cab are mounted at the same distance from a central vertical axis through the cab. Each wheel is powered independently and can rotate at variable speeds in either direction. The cab is capable of movement in any direction by rotating the axis of the drive wheels to a position which is perpendicular to the desired direction of travel. The cab can spin about its vertical axis such that the axis of the drive wheels can be oriented at any direction without changing the original footprint of the space that the frame occupies over the ground. Thus, the combined cab/chassis assembly can rotate about the vertical midpoint of the chassis axle.

Abstract: An omni-directional vehicle (ODV) with a circular frame revolvably coupled to an appendage ring using a full circumferential coupling assembly. The appendage ring serves as a point of attachment for a push bar, trailer, tool, vehicle chassis, or other device. Two independent drive wheels located on an axis through the center of the frame are mounted at the same distance from a central vertical axis through the frame. Each wheel is powered independently and can rotate at variable speeds in either direction. The ODV is capable of movement in any direction by rotating the axis of the drive wheels to a position which is perpendicular to the desired direction of travel. The ODV can spin about its vertical axis such that the axis of the drive wheels can be oriented at any direction without changing the original footprint of the space that the frame occupies over the ground.

Abstract: With a hydraulic traveling vehicle, a controller is configured and arranged to switch a merging/diverging valve to a merging state when a working equipment is driven with the merging/diverging valve being in a diverging state and with turning of the hydraulic traveling vehicle being carried out, and when a required flow rate parameter for pressurized oil of the working equipment is greater than or equal to a prescribed threshold value, and to maintain the merging/diverging valve in the diverging state when the required flow rate parameter is less than the prescribed threshold value.

Abstract: An omni-directional vehicle (ODV) with a circular frame revolvably coupled to an appendage ring using a full circumferential coupling assembly. The appendage ring serves as a point of attachment for a push bar, trailer, tool, vehicle chassis, or other device. Two independent drive wheels located on an axis through the center of the frame are mounted at the same distance from a central vertical axis through the frame. Each wheel is powered independently and can rotate at variable speeds in either direction. The ODV is capable of movement in any direction by rotating the axis of the drive wheels to a position which is perpendicular to the desired direction of travel. The ODV can spin about its vertical axis such that the axis of the drive wheels can be oriented at any direction without changing the original footprint of the space that the frame occupies over the ground.

Abstract: A mower has a frame that supports a rotary cutting deck. The frame includes a pair of side rails that each extend from a front end in advance of the cutting deck to a rear end substantially behind the cutting deck. The front ends of the side rails support a pair of front caster wheels. The rear ends of the side rails have a raised, upwardly extending arch at which a hydraulic pump/motor assembly is mounted. The pump/motor assembly has an L-shaped configuration with the motor being located towards the bottom of the arch and outboard of the side rail and with the pump extending upwardly and inwardly from the motor to be located inboard of the side rail and within the vertical profile of the arch. The hydraulic motors drive a pair of rear drive wheels to propel the frame over the ground. A cross frame extends between the motors in the pump/motor assemblies to join the assemblies together. The deck is propelled from the frame by a plurality of struts extending between the cross frame and the deck.

Abstract: A shovel loader (1) has a vehicle body frame (9), a travel device (5), a loader device (20), and a drive power generation section for generating drive power for making the travel device (5) travel. The vehicle body frame (9) has a pair of side frames (9a, 9a) arranged on both the left and right sides of the shovel loader (1). The loader device (20) is made up of a pair of lift arms (21,21) vertically swingably attached to the pair of side frames (9a, 9a) and of a bucket (29) vertically swingably attached to the forward end of the pair of lift arms (21,21). The drive power generation section has a pair of electric motors (71,71) for individually transmitting drive power to the pair of travel devices (5,5) and capable of being controlled independent of each other so that a vehicle (10) can be made to travel in a manner the left and right are independent of each other, and also has a battery (50) for supplying electric power to the electric motors (71,71).

Abstract: A method for fore-aft stabilization of a vehicle for motion in a specified direction over an underlying surface. The vehicle has at least one forward wheel and at least one aft wheel, and the forward wheel is characterized by a force normal to the instantaneous direction of motion of the vehicle. A motor actuator drives each aft wheel, and a controller governs the motor actuator or motor actuators in such a manner as to dynamically stabilize the vehicle, according to a uniform control law, when the forward wheel is in contact with the underlying surface or not. A torque is applied to the aft wheel on the basis of vehicle pitch or the force on the forward wheel normal to the direction of motion. Additionally, a periodic rotational modulation may be applied to the aft wheel, and a stabilizing torque provided based on a detected response, either of vehicle pitch or of normal force on the front wheel.

Abstract: The Officer Under Fire Perpetrator is a remote-controlled, moving, target human-like in appearance and movements and is comprised of two major components referred to as the base unit and the target body. The base unit houses all components, consisting of a chassis plate (moved by: four electric motor/wheel assemblies) housed within an armor box providing protection from bullets. This system provides live-video footage to assist human trainer, remote-control operation, in addition to post-training review as shootout scenarios unfold. An electronic sighting system is displayed on live video, ensuring the training weapon's accuracy while shooting training projectiles at trainees. Equipped with a moving target body arm, the human-appearing target body is capable of withstanding numerous bullet hits and mounts into the base unit. This allows for a simulated firearms range shootout between the O.U.F. Perpetrator firing training projectiles, as a trainee is firing bullets upon the target's body.

Abstract: A remotely controlled vehicle with a track mechanism and independently operated wheels is described. The vehicle includes a track assembly that includes a center track drive wheel and corresponding endless center track. A pair of driving wheels are mounted on opposing lateral sides of the track assembly. Two independently operated motors are included, each supplying power to only one of the driving wheels. A differential gear set is operatively connected between each of the two motors and the center track drive wheel. The gear set is formed to drive the center track drive wheel in a vehicle driving direction when both motors are concurrently operated to drive the pair of driving wheels in the vehicle driving direction. The gear set also imparts a minimal force to the center track drive wheel when each of the motors are operating to drive the pair of driving wheels in opposing directions.

Abstract: A self-moving car (1) for the moving of trailer machines (100), comprising a main chassis (2); wheels (4?, 4?) engaged with the chassis (2); a generating and feeding unit (5) and movable means (20) for coupling the car (1) with a trailer machine (100) to be towed; the car (1) further comprising an apparatus (80) for the articulated connection to the chassis (2) of the movable coupling means (20), comprising a pin (8) hinged to the chassis (2), the pin (8) having a first bottom end (9) connecting to actuating means (11) for the bilateral rotation (beta) of the pin (8), so that to the rotation of the pin (8) there corresponds a proportional variation of tilt of said movable coupling means (20) with respect to the ground plane; and a second top end (10) for the rotating coupling to the movable coupling means (20); the car (1) further comprising independent driving means, so that to a differential rotation of the wheels (4?, 4?) there corresponds a proportional rotation (&ggr;) of the movable coupling means (

Abstract: A driving force control device for an electric vehicle in which a left wheel is driven by a left in-wheel motor and a right wheel is driven by a right in-wheel motor includes a driving force difference setting section. The driving force difference setting section is configured to set a driving force difference between a driving force outputted from the left in-wheel motor and a driving force outputted from the right in-wheel motor when a lateral acceleration is detected acting on the vehicle, the driving force difference being set to generate a restoring moment against the vehicle corresponding to the lateral acceleration.

Abstract: A universal linkage assembly for a power machine is disclosed. The universal linkage is adaptable for different control configurations or patterns. For example, in embodiments disclosed, the linkage assembly includes a first control interface connectable to one of a first or second joysticks to operate one of a left or right drive motor or other function and a second control interface connectable to either the first or second joystick to operate the other of the left or right drive motor or other function with separate joysticks or the same joystick depending upon the control pattern desired.

Abstract: A four wheel drive system for bilaterally symmetric vehicles has separate controlled drive speed and direction for each wheel. Each drive system is operable to independently drive each wheel. The rear wheels of the vehicle are steering wheels which are connected with the vehicle frame for independent rotation about a vertical axis. Steering and driving of the wheels is controlled by a controller. The combination of controlled steering for the rear wheels through many degrees about their vertical axes and individual power to all four wheels provides the vehicle with a zero turning radius for improved mobility as well as improved traction on unstable surfaces.

Abstract: A low surface impact, skid steered, all terrain vehicle is disclosed which has a rectangular frame from which sets of tandem mounted, independently movable control arms are suspended. A hydraulic motor driven wheel axle is mounted on a lower end of each control arm with at least one pneumatic wheel mounted upon each wheel axle. Separate hydraulic control circuits having separate drive pumps drive the hydraulic motors on each side of the vehicle. Each of these hydraulic control circuits is operable in either a series connected mode or a parallel connected mode.

Abstract: A hydraulic transaxle comprises: a housing having a fluid sump therein, the housing including mutually joined housing parts; a pair of first wheels disposed at one of front and rear portions of the vehicle; an axle disposed in the housing; a center section disposed in the housing, the center section being formed therein with a pair of fluid ducts; a hydraulic pump disposed in the housing, fitted to the center section, and communicating with the fluid ducts; and a hydraulic motor disposed in the housing, fitted to the center section, and communicating with the fluid ducts so as to be fluidly connected to the hydraulic pump. The hydraulic motor includes a cylindrical motor shaft relatively rotatably and coaxially penetrated by the axle and drivingly connected to the axle.

Abstract: A compact crawler type tractor having an excellent turning feeling is provided. A hydraulic speed change mechanism for turning includes a hydrostatic transmission pump for turning and a hydrostatic transmission motor for turning, and is characterized in that the hydrostatic transmission pump for turning is a variable displacement pump, and an output of the hydrostatic transmission motor for turning is input into a differential mechanism. By combining the hydrostatic transmission pump for turning and the hydrostatic transmission motor for turning and the differential mechanism, an excellent turning feeling can be obtained.

Abstract: An all-terrain fire fighting apparatus has a high power-to-weight ratio, a hydraulic skid steer drive system, a drive-by-wire control system, a proportionally joystick controlled nozzle turret, and a 1500 psi foam injecting water supply system which supplies the nozzle turret and a high-pressure hose mounted on a reel. To dissipate heat load from the fire fighting apparatus systems, the fire fighting apparatus cooling system employs a cooling shroud in the form of a box with multiple system radiators stacked on one face of the box and the remaining faces containing exhaust fans mounted to draw air out of the box and through the stacked heat exchangers. The fire fighting apparatus is capable of being operated remotely by means of onboard GPS, real-time imaging, and inputs to the joystick controller and fire fighting apparatus drive-by-wire system.

Abstract: A hydraulic traction system for vehicles is described. The system comprises a hydraulic vane motor mounted at each wheel of the vehicle, and equal number of identical hydraulic vane motors operated as engine driven pumps, and a control system for regulating the flow and direction of hydraulic oil during operation. The hydraulic motor is of a novel design that has a hollow non-drive shaft that accepts incoming hydraulic oil, this allows internal components of the hydraulic motor to be arranged in such a way to improve the efficiency of the hydraulic traction system.

Abstract: Systems, methods and apparatus are provided through which in some embodiments, a mobile imaging device includes one or more motors to propel the mobile imaging device.

Abstract: A working vehicle comprises: a vehicle frame; a prime mover mounted on an upper surface of a first portion of the vehicle frame; a pair of left and right transaxles juxtaposed below the vehicle frame, the left and right transaxles having respective single axles so as to individually and reversibly rotatably driving left and right drive wheels; a working device disposed below the vehicle frame; an output shaft of the prime mover extended downward from the first portion of the vehicle frame; a traveling belt transmission disposed below the vehicle frame and extended from the output shaft to the pair of left and right transaxles; a working belt transmission disposed below the vehicle frame and extended from the output shaft to the working device; a counter shaft for the traveling belt transmission extended downward from a second portion of the vehicle frame; and a pair of upper and lower pulleys provided on the counter shaft, wherein a belt looped over the lower pulley is extended from the output shaft of the pr

Abstract: A tractor has front wheels mounted on the frame at fixed angles and a pair of rear wheels each mounted on a respective castor assembly. Each of the castor assemblies has a vertical pivot axis mounted in a swivel support of an axle of the frame and a bottom transverse tubular member connected to a pair of parallel forks carrying at a lower ends the transverse axle of the wheel. The mounting link includes a torsion spring defined by a rod attached to the forks which passes though a sleeve containing a resilient elastomeric spring of the tubular member allowing spring suspension pivotal movement of the upper ends of the forks relative to the bottom transverse member about an axis parallel to the wheel axis.

Abstract: An unmanned autonomous vehicle for substantially lateral displacement of feed lying on a ground, comprising two wheels separately drivable by separate drive units, a torque difference adjusting device for adjusting the torque difference between the wheels, a control unit for controlling the vehicle and moving it in a direction of travel by controlling at least one of the separate drive units, a feed displacing device for substantially lateral displacement of the feed, and an adjusting device which is arranged to adjust the height and/or the position of a lowest point of the feed displacing device. The adjusting device comprises a vehicle tilting device which is arranged in such a manner that the lowest point will be located at least substantially off the center line of the vehicle.

Abstract: A ground engaged vehicle includes a front portion and a rear portion joined by an articulation. The articulation rotates around a longitudinal axis. An engine drives a hydrostatic pump which drives four hydrostatic motors, each of the hydrostatic motors in operative engagement with one of four wheels. The wheels are on wheel mounts, each of the wheel mounts having a vertical axis around which one of the four wheels with one of the hydrostatic motors is turnable. A steering system turns the two wheels of the front portion in a first direction and the two wheels of the rear portion in an opposite direction. The steering system is powered by the hydrostatic pump. A pedal control system has a first pedal controlling driving the vehicle in a forward direction and a second pedal controlling driving the vehicle in a rearward direction.

Abstract: A wheel assembly for a small-scale machine includes a pair of opposing, individually-driven wheels, associated motors and possibly one or more gear assemblies. The motors receive separate drive signals from a control electronics subsystem of the wheel assembly. The motors can be connected to the wheels via the gear assemblies. Because the wheels are separately driven, driving the two wheel assemblies at similar or different speeds drives the wheel assembly over straight or curved paths. An orientation assembly allows the orientation of the wheels to the machine to be controllably altered. A height adjusting assembly allows the distance between the wheels and a point on the machine where the wheel assembly is attached to be adjusted. The rotational axis that the wheel assembly rotates about when re-oriented need not pass through either wheel of the wheel assembly. The wheels can be driven by control signals generated by on-board control electronics.

Abstract: A hydraulically driven vehicle is disclosed which is moved or turned by driving left and right hydraulic transmissions with one engine and driving left and right drive wheels with these hydraulic transmissions. The vehicle includes a gear-shifting mechanism for converting the actions of an operator and transmitting the result to the hydraulic transmissions, which mechanism is comprised of a first swinging member that is swung by a vehicle speed cable, and left and right second swinging members that are placed on the first swinging member, that are swung by left and right steering cables, and that push and pull push-pull rods.

Abstract: A turf device driven by a traction drum. The traction unit is connected to the tool by an articulable joint which allows the traction unit to rotate horizontally (yaw) and vertically (pitch), as well as roll side-to-side in relation to the tool. The articulation allows the tool and the traction unit to follow undulations in the terrain separately and allows the mobile object to turn by yawing the traction member in relation to the tool.

Abstract: A traveling apparatus, including a housing, first and second wheels, a wheel driving section, and a control section. The first and second wheels are supported for individual rotation in one and the other direction around a common axis on the housing. The wheel driving section is configured to drive the first and second wheels to rotate individually. The control section is configured to control the wheel driving section and is operable to control, when traveling of the housing which is traveling is to be stopped, the wheel driving section to drive the first and second wheels to rotate in different conditions from each other so that the housing is revolved toward a first one of the leftward and rightward directions with respect to a traveling direction of the housing once and then revolved toward a second one of the leftward and rightward directions to stop the housing.

Abstract: A powered omni-directional aircraft and ordinance handling vehicle which, in one embodiment, includes a circular frame and two drive wheels capable of independent powered forward and rearward rotation about a horizontal axis. The drive wheels are adapted to allow the vehicle to spin in place about a vertical axis which intersects the horizontal axis midway between the drive wheels and which is generally centered in the circular frame. A turret is rotatively mounted to the frame such that it is capable of rotation about the vertical axis, and an articulated ordinance handling arm is mounted to the turret. A castor is mounted to the frame for supporting the frame on the ground. A control system enables the vehicle to rotate in place to change headings while maintaining ordinance carried by the arm motionless with respect to the ground and to perform repetitive precise multi-axis motion control of the vehicle.

Abstract: A method and system are described for calibrating speed controls for a vehicle having a pair of drive means on opposite sides of the vehicle driven by independent speed controls and where relative speed of the drive means is used to direct the vehicle. In one aspect, angular motion of the vehicle is detected using at least one of a gyroscopic angular sensor and a pair of accelerometers to determine a rate of yaw; a speed control output for controlling the relative speed is adjusted so that the rate of yaw is lower than a threshold when speed control inputs for controlling the relative speed are equal; and one or more speed control adjustment parameters are determined and stored for use during operation for controlling the relative speed of the drive means. A microcontroller may be used to receive sensor outputs (e.g. from the gyroscope and/or accelerometers) and speed control inputs and to determine the speed control adjustment.

Abstract: To provide an inverted type moving body capable of continuing the inversion control with stability even when abnormality occurs in the inversion control while the moving body is moving, and a method of controlling the inverted type moving body. In an inverted type moving body including a rotational body having a circular cross section, a driving portion that rotationally drives the rotational body, a main body that supports the rotational body, and a control portion that maintains the inverted state of the main body by controlling the driving portion such that the rotational driving of the rotational body touching a floor surface is controlled, the control portion multiplies a signal obtained based on the inclined state of the main body by a predefined gain to calculate the driving amount of the rotational body for maintaining the inverted state, and reduces the gain when the inverted state of the main body is determined to be abnormal.

Abstract: A control system for use with a ground maintenance vehicle such as a lawn mower. The control system may include one or more control handles movable between a neutral position and at least a first drive or reverse position. The system may further include a biasing mechanism operable to bias the control handle from the first drive position to the neutral position. The biasing mechanism may be pre-deflected when the control handle is in the neutral position, yet provide little or no biasing effect to the handle until the handle is moved towards the first drive position.

Abstract: A drive wheel steering system for a lawnmower has a handle bar assembly that is pivotal about a vertical axis to provide directional control of the mower and rotatable about a horizontal axis to provide speed control of the mower. A control bar is operable to set a desired forward speed of the mower via engagement of a cam and the linkage assembly providing directional and speed control for the mower.

Abstract: An industrial truck and a method for its delivery are proposed, the mobile base of the industrial truck being transported to the delivery destination on a load transport vehicle. At the delivery destination, an operating device that is also supplied is used as a mobile operating device for issuing control instructions for the traction operations of the base vehicle, in order to drive the base vehicle with its own drive units off the load transport vehicle over a ramp or the like and thus to set it down.

Abstract: A floor cleaning machine having a speed control and steering member which operates under operator-applied deformation thereof. The invention provides improved consumer convenience at steering and/or speed control.

Abstract: An all-terrain vehicle having a unique suspension system for enabling handicapped individuals or invalids to easily access the vehicle and be self-transportable over ground or an ice surface.

Abstract: A retaining strip arranged to impede the rotation of a stop screw is disclosed. The retaining strip connects with the stop screw on both sides of an attachment bracket. The retaining strip is stretched over the bracket and applies a pressure to the screw that serves to maintain screw rotational position during vehicle operation. The retaining strip does not hamper the adjustment of the screw during adjustment.

Abstract: A traveling robot includes a main body frame having a front wheel supported in a front portion thereof in a traveling direction, a first traveling part having a first driving wheel to drive in the traveling direction, a first rear wheel disposed in a rear side of the first driving wheel, and a first wheel frame to support the first driving wheel and the first rear wheel, a second traveling part having a second driving wheel to drive in the traveling direction independently from the first driving wheel, a second rear wheel disposed in a rear side of the second driving wheel, and a second wheel frame to support the second driving wheel and the second rear wheel, a first interlocking hinge part to rotatably support the first wheel frame to the main body frame to have a hinge axis of a perpendicular direction with respect to the traveling direction, and a second interlocking hinge part to rotatably support the second wheel frame to the main body frame independently from the first interlocking hinge part to have a

Abstract: A tractor has hydraulically driven wheels at a cab end and castor wheels at an engine end. It can be driven cab forward in a working mode with a header on the forward end. It is rotated to engine forward in the transport position for more stable higher speed travel. The driven wheels are driven by hydraulic motors each having their own drive pump the output of which is controlled by a cam plate. There is provided an automatic steering system having a guidance controller arranged to receive GPS position information and feed back signals and to generate output for controlling a hydraulic control valve for controlling flow in hydraulic fluid for a double acting hydraulic control cylinder arranged to actuate pivotal movement of the steering link member independently of the steering shaft.

Abstract: A hydraulic system includes first and second pumps, first and second motors, and three valves for selectively creating combined and basic hydraulic flow. The arrangement of valves permits combined flow to be provided to both motors in series to cause high speed operation of the motors, and permits combined flow to be provided to one motor and basic flow to the other motor. When applied to a vehicle, the arrangement provides a steerable high speed series arrangement of the vehicle's drive motors.

Abstract: A method of controlling the speed of a right front wheel and a left front wheel on a work machine includes receiving a speed command based at least partially on an operator input and monitoring at least one wheel steering angle of at least one front wheel. A first front wheel speed command may be determined based at least partially on the at least one wheel steering angle. In addition, a second front wheel speed command may be determined based at least partially on the at least one wheel steering angle. The first front wheel speed command and the second front wheel speed command may be output to independently control the speed of the right and the left front wheels.

Abstract: A construction vehicle including methods and apparatus for operator directed electronic tracking adjustment.

Abstract: A vehicle with a omni-directional cab having a circular frame revolvably coupled to a chassis having an axle, wheels and passenger seats. Two independent drive wheels located on an axis through the center of the cab are mounted at the same distance from a central vertical axis through the cab. Each wheel is powered independently and can rotate at variable speeds in either direction. The cab is capable of movement in any direction by rotating the axis of the drive wheels to a position which is perpendicular to the desired direction of travel. The cab can spin about its vertical axis such that the axis of the drive wheels can be oriented at any direction without changing the original footprint of the space that the frame occupies over the ground. Thus, the combined cab/chassis assembly can rotate about the vertical midpoint of the chassis axle.

Abstract: A hydrostatic transaxle comprises: a motor casing; at least one hydraulic motor disposed in the motor casing; at least one output shaft disposed in the motor casing so as to be driven by the at least one hydraulic motor; and a pair of steerable wheel support units attached onto respective opposite ends of the motor casing. Each of the steerable wheel support units includes an axle, a steerable casing, a wheel, and a steering arm. In each of the steerable wheel support units, the axle is drivingly connected to the at least one output shaft, the steerable casing is substantially horizontally rotatable relative to the motor casing, the wheel is attached on an outer end of the axle outside of the steerable casing, and the steering arm is rotatably integrally provided on the steerable casing.

Abstract: The parking brakes at the drive wheels of a zero turning radius mower are automatically set when a pair of drive levers used for determining speed, steering and forward or reverse travel are placed in their neutral positions and swung outwardly to widespread, operator dismount positions. When the drive levers are widespread, switches associated with a control circuit are opened, allowing air cylinders to immediately exhaust pressurized air so that tension springs may actuate the brake assemblies to set the brakes. When the drive levers are returned to their operating modes and the ignition is turned on, the control switches are closed, energizing the control circuit to pressurize the air cylinders and release the brakes against the bias of the tension springs.

Abstract: A self-moving car (1) for the moving of trailer machines (100), comprising a main chassis (2); wheels (4?, 4?) engaged with the chassis (2); a generating and feeding unit (5) and movable means (20) for coupling the car (1) with a trailer machine (100) to be towed; the car (1) further comprising an apparatus (80) for the articulated connection to the chassis (2) of the movable coupling means (20), comprising a pin (8) hinged to the chassis (2), the pin (8) having a first bottom end (9) connecting to actuating means (11) for the bilateral rotation (beta) of the pin (8), so that to the rotation of the pin (8) there corresponds a proportional variation of tilt of said movable coupling means (20) with respect to the ground plane; and a second top end (10) for the rotating coupling to the movable coupling means (20); the car (1) further comprising independent driving means, so that to a differential rotation of the wheels (4?, 4?) there corresponds a proportional rotation (&ggr;) of the movable coupling means (

Abstract: A system for positioning a transportable and relocatable equipment having at least four walking assemblies attached to transportable and relocatable equipment each walking assembly has a walking pad, roller tread for rolling the roller bearing surface, a lift assembly connected to the central collar, a rotatable motion gear assembly disposed around the lifting assembly, a motor for actuating the rotatable motion gear assembly, a pivoting collar disposed around the rod operated by a controlling means with a processor, a push pull travelling system for receiving fluid and extending a specified distance causing movement of the equipment in a first direction, and enabling the walking assemblies to raise, reorient, lower, and travel of the transportable and relocatable heavy equipment in a second direction using the treads.