Abstract: Vehicles with open loop hydraulic steering systems may suffer from jerky steering due to the necessity to have safety valves in the open loop system to prevent uncontrolled vehicle movement. Traditional open loop steering arrangements allow steering by controlling fluid quantities flowing from the pump to the drive motors. The disclosed vehicle has an open loop hydraulic drive system including first and second variable displacement motors for driving ground engaging mechanisms at first and second sides of the vehicle, respectively. The system includes a control mechanism configured for steering the vehicle by changing the displacement of one of the first and second motors. This allows the operator to change the drive motor speed range during travel.

Abstract: In a crawler vehicle, at the time of crane operation at a place where a grounding space of crawlers is limited, a land leveling preparation is suppressed as little as possible so as to improve efficiency of the operation. The crawler vehicle is provided with left and right crawler frames on the both left and right sides of a track frame. The crawler frames can be moved between an expansion position for maximizing a distance between centers of the crawlers and a contraction position for minimizing the distance. Further, the crawler vehicle can position the crawler frames to the track frame at an intermediate position in the middle of the expansion position and the contraction position.

Abstract: An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conducted by a driver. An overload preventing control is conducted so that a sum of a current conversion value of a steering torque detected by the steering torque sensor and an assist current calculated based on the steering torque becomes equal to a limit value. When the steering gear box has reached a stroke end, the assist current is prevented from excessively increasing, thereby preventing a reduction in durability of the steering gear box or a motor of the steering actuator.

Abstract: An omni-directional wheel includes a hub rotatable about a wheel axis and a first row of angled rollers about the hub each rotatably supported by the hub. There is at least a second row of angled rollers about the hub each also rotatably supported by the hub. The rollers of the second row are axially offset along the wheel axis from the first row, and rotationally offset from the first row about the wheel axis, and not coaxial with the rollers of the first row.

Abstract: An assembly and positioning mechanism for wheelchair and auxiliary operating lever. The assembly and positioning mechanism has a swinging angular adjustment seat and a liftable pivoting seat of operating lever. The angular adjustment seat has an assembly side of locating rack and an assembly side of pivoting seat. The assembly side of locating rack is pivoted onto the locating rack via an adjuster, and the angular adjustment seat can swing rotarily. The pivoting seat of operating lever consists of a connecting side and a mating side of operating lever. The pivoting seat of operating lever can move vertically via a limiting portion. The mating side of operating lever is fitted with a limiting rabbet and a guide opening extended in an outward-dipping state. The mechanism can swing and also shift vertically, making it possible to control the guide opening of the mating side of operating lever for outward-dipping extension.

Abstract: An implement includes a caster wheel pivotally attached to the implement to support the implement for movement. A steering link is engaged with the caster wheel, and an actuator is operative to move the steering link from a neutral position to a controlling position. When the steering link is in the neutral position, the caster wheel can pivot about the caster axis through a 360 degree pivot range. When the steering link is moved to the controlling position, the caster wheel is oriented to roll toward a first side of the implement.

Abstract: A coupling aid facilitates connecting at least one supply line between a first vehicle and a second vehicle which can be coupled to the first vehicle by means of a coupling. The coupling aid comprises a supply bracket mounted on the second vehicle and used to receive the at least one supply line. The supply bracket can be moved by means of a drive from a driving position (A) in the longitudinal centerline of the vehicle into an operating position (B) lateral to the driving position. The coupling is provided with at least a first sensor for detecting the locking state of the coupling and the movement of the supply bracket is triggered by a signal from the first sensor.

Abstract: A bicycle frame can have a main frame, a sub-frame and a shock. The sub-frame can move in relation to the main frame and the shock can be used to regulate that relationship. The mainframe can comprise a series of tubes including a head tube, a top tube, a bottom tube and a seat tube. The shock can connect to the main frame at a gusset connected to the top tube and the bottom tube.

Abstract: A motorcycle frame, and motorcycle with the frame as disclosed. There is disclosed a motorcycle frame having tubes extending away from a steering head tube in a three-dimensional trellis composite assembly of frame main tubes, interconnected by frame struts, paired upper and lower frame main tubes oriented, along at least a portion of their lengths, substantially parallel to each other. A single tube is oriented parallel to the lower frame main tubes, and arranged between the upper frame main tubes and the steering head tube.

Abstract: An apparatus for raising a spring arm of a trailer hitch. The apparatus may include a lift, such as a jack, for attaching to a tongue of a trailer. A link member may be pivotally attached to the lift. The link member may also be pivotally attached to a bracket which may be attached to the spring arm. A brace member may be attached to the link member on an end opposite the bracket. As the lift raises the link member, the link member may pivot about the brace member such that movement of the bracket may be amplified as compared to movement of the lift. Moreover, lifting of the spring arm can be easily accomplished.

Abstract: Steering mechanism for orienting the steered wheels (1a-d) of a short vehicle with respect to the chassis, comprising one first vertical axis (2) per steered wheel, allowing each steered wheel (1a-d) to pivot with respect to said chassis and a first link (5a-d) allowing a torque to be applied to each steered wheel to make it pivot around said first vertical axis. The inner end of the link is able to slide along a straight rail (11a-d) which in turn is rotatably mounted with respect to the chassis 60. A second link (6a-d) not parallel to the wheels forces the first link (5a-d) to slide in a defined manner along a rail (11a-d). This makes possible the differentiated orientation of the left and right wheels. Advantage: very small turning radius. Particularly applicable to electric chairs for the disabled.

Abstract: A rear suspension of a snow vehicle is provided with a slide rail which guides a track belt. The slide rail is made of metal and formed by extrusion. A bent portion is provided on an end of the slide rail to extend to a tip end thereof with a position toward the end being a starting point of bending. A projection, to which one end side of a torque arm supporting a vehicle body is connected, is arranged toward the end of the slide rail so as to project upwards. The projection includes a bracket provided separately from the slide rail and the starting point of bending is positioned in a length range of the projection.

Abstract: A multi-speed system configured to increase the speed or decrease the pedaling effort of a lever propelled bicycle. The multi-speed system is composed of a manual control device 70, mounted on the frame close to the rider's hand placement on the handle bars, and other connected components configured to change wheel rotation per pedal. It has the ability to transfer manual force to the transmission means to change propulsion speed and effort. Depressing a control lever 2 down will allow the rider to increase in speed and lifting the control lever 2 up would allow the rider to decrease pedaling effort.

Abstract: A robotic vehicle is disclosed, which is characterized by high mobility, adaptability, and the capability of being remotely controlled in hazardous environments. The robotic vehicle includes a chassis having front and rear ends and supported on right and left driven tracks. Right and left elongated flippers are disposed on corresponding sides of the chassis and operable to pivot. A linkage connects a payload deck, configured to support a removable functional payload, to the chassis. The linkage has a first end rotatably connected to the chassis at a first pivot, and a second end rotatably connected to the deck at a second pivot. Both of the first and second pivots include independently controllable pivot drivers operable to rotatably position their corresponding pivots to control both fore-aft position and pitch orientation of the payload deck with respect to the chassis.

Abstract: A straddle-type vehicle with enhanced heat exhaust efficiency in a transmission case housing a continuously variable transmission. The continuously variable transmission and an engine are arranged forward of a rear wheel 4. An air intake duct introduces outside air into the transmission case and an air exhaust duct exhausts air from the transmission case. The air exhaust duct is connected to and extends upward from a top portion of the transmission case. The air exhaust duct has an air exhaust port that is positioned above the transmission case.

Abstract: A tire that is capable of moving a vehicle in both longitudinal and lateral directions has been developed. The tire is mounted on a circular hub with a center opening and a concave groove around the outer edge. The groove contains an electromagnetic drive mechanism that provides lateral drive to the tire. An axle that provides longitudinal drive to the tire is attached to the center opening. The tire further includes a surface layer that is in contact the groove of the hub, a belt layer comprising a that is connected to the interior of the surface layer and a bladder located in the interior of the belt layer that provides structural support to the tire so that the tire stays within the groove of the hub when the tire is moving laterally. The tire also includes a pair of rigid roller rings made of incrementally spaced roller bearings. Longitudinal movement of the tire is generated by rotating the axle and lateral movement of the tire is generated by the electromagnetic drive mechanism.

Abstract: A variable gear ratio steering apparatus has a steering operating member, a turning unit to turn a vehicle wheel and a gear ratio varying unit arranged between the steering operating member and the turning unit. The gear ratio varying unit comprises a differential gear mechanism, a gear ratio control motor and a steering torque assistance motor. The differential gear mechanism has a first internally toothed gear coupled to the steering operating member, a second internally toothed gear coupled to an input shaft of the turning unit and arranged coaxially with respect to the first internally toothed gear, at least one inside gear meshing with both the first and second internally toothed gears, and an inside gear support member rotatably supporting the inside gear. The gear ratio control motor is connected to the inside gear support part. The steering torque assistance motor is connected to the second internally toothed gear.

Abstract: A system for connecting supply lines between a tractive vehicle and a semi-trailer that can be coupled to the latter, a semi-trailer coupling and an automatic line coupling system comprising at least one connector jack being situated on the tractive vehicle and the semi-trailer having at least one supply circuit comprising a first supply console for connecting to the tractive vehicle and for receiving a plug-in element that is located on at least one supply line of the tractive vehicle and/or a plug that is configured to fit the connector jack. The aim of the invention is to provide a system for connecting supply lines for tractive vehicles, comprising an automatic line coupling system that permits the coupling of conventional semi-trailers. To achieve this, a second supply console is located on the tractive vehicle and is permanently connected to the connector jack of the line coupling system and the plug-in element can be selectively connected to the first or second supply console.

Abstract: A preassembly unit for the drive of an industrial truck, with a fifth wheel on which the driving wheel is rotatably mounted around a horizontal axis and which on its part is rotatably mounted in a bearing member around a vertical axis, a drive motor arranged on the fifth wheel, which is coupled with a driving shaft of the driving wheel via a gearbox, optionally a steering motor on the bearing member in order to turn the fifth wheel in the bearing member around the vertical axis, a parallel rod assembly between the bearing member and a frame of the industrial truck, which permits an essentially vertical movement of the preassembly unit in relation to the frame, and a spring arrangement between the bearing member and a frame-fixed section, wherein at least one upper drag rod of the parallel rod assembly is articulated on the lower end of a separate attachment section, which forms an interface with a counter-attachment position on the frame by attachment positions, and that at least one spring acts between a sho

Abstract: A motorcycle including a frame, a swing arm pivotably coupled to the frame, a rear wheel rotatably coupled to the swing arm, a rear fender disposed above the rear wheel. The rear fender has a profile shape. The motorcycle includes a belt assembly having a debris deflector attached to the swing arm. The debris deflector forms a profile shape that mimics at least a portion of the profile shape of the rear fender.