Abstract: A suspension control system includes a suspension system variable of stiffness and/or damping characteristics, a road sensor producing a road condition indicative signal and a controller for controlling the stiffness and/or damping characteristics of the suspension system depending upon the road condition indicative signal value and the vehicle speed indicative signal value. The controller is detective of the vehicle speed in a predetermined normal speed range which is defined by a lower speed criteria and an upper speed criteria, for generally maintaining the stiffness or damping characteristics of the suspension in relatively soft. The controller is detective of the vehicle speed indicative signal value smaller than the foregoing lower speed criteria to increase sensitivity of the road sensor and/or harden the suspension system at harder level than that in the normal speed range when the roughness of the road surface beyond a rough road criteria.

Abstract: A system for automatically levelling a vehicle, such as a recreational vehicle, relative to gravity includes a plurality of extensible jacks, preferably hydraulic, disposed at strategic positions on the bottom of the vehicle. A plurality of switches sense the downward tilting of the vehicle relative to gravity at the strategic positions and produce signals to operate the jacks in accordance with such tilting. The jacks are extended in a particular sequence depending upon the particular directions in which the vehicle is tilted relative to gravity. The jacks become extended only when the hydraulic pressure in a hydraulic circuit exceeds a particular value. Since the rear of the vehicle weighs considerably more than the front, the switches are constructed and are connected in a circuit to resolve any ambiguities in favor of initially operating the jacks at the rear of the vehicle.

Abstract: This height adjustment system includes: a source of pressurized working fluid; several fluid pressure actuated wheel suspension units, each of which resiliently pushes a one of the wheels of the vehicle downwards with respect to the body thereof, according to the amount of pressurized working fluid supplied to it; a passage means for conducting supply of working fluid from the source to the wheel suspension units; several valve means, provided at intermediate points of the passage means, for controlling flow of working fluid therethrough; and a flow divider means which has an inlet and two outlets, one of the outlets being communicated to a first set of the wheel suspension units for a first set of the wheels of the vehicle and the other of the outlets being communicated to a second disjoint set of the wheel suspension units for a second disjoint set of the wheels of the vehicle.

Abstract: A vehicle height control system includes a plurality of vehicle height adjusters actuated by a hydropneumatic actuating system and controlled by control signals from a control unit. The control unit calculates, for each of the vehicle height adjusters, a target difference between a target adjustment position set by a setting device and an actual position detected by a vehicle height sensor associated with the adjuster, and the control unit generates the control signals in accordance with the respective target differences. The control unit further selects a maximum target difference, and calculates deviations of the target differences from the maximum target difference. When any of the deviations exceeds a predetermined value, the adjustment operation of the vehicle height adjuster associated with this deviation is temporarily stopped thereby correcting the nonuniformity of the adjustments in the vehicle height adjusters.

Abstract: A multi-purpose, all terrain vehicle with four independently suspended driving wheels and high ground clearance. The vehicle height can be independently controlled at each wheel to maintain the vehicle chassis level over rough terrain. Further, the front wheels can be steered together but independently of the rear wheels, which are also steerable together so that the vehicle is capable of extremely tight turns and movement in a direction at an angle to its longitudinal axis. The configuration of the vehicle provides substantial flexibility of the installation of working accessories to the front, rear and middle of the vehicle chassis.

Abstract: A self-leveling cross-country vehicle is provided with a carrier frame which is pivotally mounted to the vehicle frame about the longitudinal and transverse axes. Hydraulic cylinders are connected to each side of the mounting shafts of the carrier frame which are connected to a hydraulic pressure circuit. The wheels of the vehicle are mounted on axles which is provided with a hydraulic piston also connected to the hydraulic pressure circuit. The up and down movement of the axles as the vehicle travels over the ground actuates the hydraulic piston which levels the carrier frame with respect to the ground.

Abstract: A hydraulic stabilizing mechanism for connection with a main hydraulic hoist system for automatically actuating at least a pair of stabilizing cylinders to extend the same into statilizing position whenever the main hoist system is extended and positively prevent the stabilizing cylinders from retracting until the main hoist system is in fully retracted position, and more specifically, a hydraulic stabilizing mechanism for farm wagon dump boxes which provides hydraulically actuated stabilizing strut elements between the wagon bolster and the front axle which are maintained in extended stabilizing position whenever the hydraulic box dumping mechanism is extended.

Abstract: An apparatus for levelling a base comprises two switches (T, L) arranged to sense the disposition of a caravan or trailer base (10) in mutually perpendicular directions. According to the state of each of the switches, jacks disposed at each of the corners (11-14) of the base are actuated to alter the height of the respective corner. Further switches (SM1-SM4) are actuated when a corner of the base (10) is at a desired height to prevent further movement of the associated jack, and to cause movement of one or more other jack to level the base. Operation of the jacks in response to the switches is controlled by a control unit.

Abstract: A standard cargo container is reconstructed into a readily transportable hospital unit for providing emergency treatment to injured survivors at a site of a major disaster, wherein the structural features embodied by the container contribute to its transportability to the disaster site (except, of course, instead of cargo, the container houses medical facilities and supplies), and subsequently at the site the container has surface transportability as a result of an internal combustion engine-operated four-wheel drive which is supplemented by a rear pair of idler wheels that are vertically extendable and retractable so as to maintain a horizontal orientation in the container during the loading and unloading thereof from a cargo-type aircraft.

Abstract: A method of operating a vehicle height adjusting apparatus including a vehicle body having front and rear wheels, contractible and extensible dampers disposed between the front and rear wheels and the vehicle body, a motor, a pump unit having inlet and outlet ports and drivable by the motor for supplying a working fluid under pressure to the dampers, a first valve member disposed in a first fluid passage between the pump unit and the dampers for adjusting the height of the vehicle, and a second valve member disposed in a second fluid passage between the inlet and outlet ports of the pump unit and connected to the first fluid passage for discharging the fluid from the dampers to the outlet port of the pump unit. The method comprises the steps of actuating the pump unit, opening the second valve member no later than simultaneously with the actuation of the pump unit, and closing the second valve member a predetermined period of time after it has been opened, whereby the height of the vehicle can be increased.

Abstract: A system for controlling two wheels at one end of a skid steer vehicle. The wheels are mounted at the distal ends of a pair of downwardly extending pivot arms; the pivot arms are mounted on the vehicle body about a common transverse axis. Two hydraulic cylinders can be operated simultaneously in either direction to raise or lower the ends of both the pivot arms thereby lowering or raising one end of the vehicle. The two hydraulic cylinders under another operating condition for the vehicle are interconnected through a hydraulic loop circuit which permits the wheel on one side of the vehicle to move upwardly and the wheel on the other side move downwardly the same amount to automatically change the attitude of the vehicle to a more nearly level position.

Abstract: An automatic suspension system for a vehicle lowers the vehicle ride height when the vehicle is operated below a predetermined speed and when the vehicle is at rest so that the vehicle has a lower center of gravity for better balance and easier passenger boarding characteristics. The vehicle is elevated when it is operated above the predetermined speed to increase suspension travel and ground clearance. The raising and lowering of the suspension can also be varied depending on acceleration or deceleration characteristics or the combination thereof with vehicle speed. The correct ride height can be maintained for different loadings and is not affected by road irregularities. The system also responds quickly and adjusts ride height in a short period of time. While the present invention is adaptable to a wide variety of vehicles, it is particularly well suited for motorcycles.

Abstract: Suspension mechanisms for motor vehicles include dampers of variable damping powers and air springs of variable spring coefficients so that the suspension characteristics are changed between soft and hard modes. The suspension mechanisms are provided with a controller for producing a control signal only when the differential value between the value of a last steering angle and an average value of steering angles is larger than a predetermined value to change the suspension characteristics to the hard mode. In accordance with this arrangement, the suspension characteristics are changed to the hard mode only when the rolling angle of the vehicle exceeds a predetermined value.

Abstract: A three-wheeled vehicle steering and suspension system including two support assemblies for two opposed front wheels pivotably mounted at opposite sides of the vehicle frame and operatively connected by a hydraulic cylinder arrangement actuated by the vehicle steering linkage for inducing opposed pivotal movement of the support assemblies during vehicle turning to cause leaning of the vehicle in the direction of turning. A biasing arrangement provides the operative connection between the hydraulic cylinder and the support assemblies for transmitting lean-actuating reciprocatory movement of the hydraulic cylinder to the support assemblies while yieldably permitting independent pivotal movements thereof.

Abstract: A suspension and steerage system is disclosed for a wheel supported vehicle. A suspension arm assembly of parallelogram configuration is pivotally attached to one side of the main frame and freely supports a wheel spindle. The piston rod of a hydraulic motor interconnects opposite wheels, and a lever structure is provided which, in response to pivotal oscillation of one wheel, axially activates the piston rod to transfer reactive forces to the opposite side of the main frame, and serves to level the plane of the main frame. The hydraulic motor can further be equallized to lock out further movement of the wheels, thereby stabilizing the vehicle in a static condition.

Abstract: This invention discloses a front axle for a ground engaging vehicle. The front axle is oscillatable relative to a rear axle for enabling all the wheels to contact the ground under adverse terrain conditions. Primarily, the vehicle comprises a main frame having the rear axle attached; and, a sub-frame which is pivotally attached to the main frame and contains the front axle. The vehicle further includes a torque tube on the rear drive shaft having a hydraulic cylinder controlled torque tube for controlling the action of the sub-frame relative to the main frame.

Abstract: An automatic vehicle height-adjusting system is applied to a vehicle including a sprung mass and an unsprung mass in contact with a road surface, the sprung mass being supported on the unsprung mass via a spring or the like. The system includes a sensor, which senses the distance between the sprung mass and the road surface and generates a distance signal indicative thereof. In response to the distance signal, a first discriminator or comparator determines whether or not the distance is less than a first predetermined value, and generates a first comparison signal indicative thereof. In response to the distance signal, a second discriminator or comparator determines whether or not the distance is greater than a second predetermined value, and generates a second comparison signal indicative thereof. The second predetermined value is chosen to be greater than the first predetermined value.

Abstract: Device for adjusting seating position of an automotive vehicle seat by using the change of the pressure of a working gas is so designed that the working gas is propelled using a pressure pump of a pneumatic vehicle-height-adjusting device without an additional pump used exclusively for pressurizing the working gas. Therefore, the working portion of the seating position adjusting device is connected to a working gas passage of the vehicle height adjusting device via a working gas supply passage. The working gas supply passage is provided with a control valve so that introduction of the working gas is controlled. The working portion is further provided with an exhaust valve so as to control the exhaust operation of the working gas from the working portion.

Abstract: An override system for an articulated vehicle having an oscillating axle suspension. When the angle of articulation exceeds a predetermined maximum while the vehicle is turning, the suspension system is locked to prevent the vehicle from tipping over.

Abstract: A vehicle height adjusting apparatus includes a height adjustor receiving therein or exhausting therefrom pressurized air to adjust the height of a vehicle, an air compressor for supplying pressurized air to the height adjustor, a temperature detector for detecting the temperature of the air compressor, and a control device including an actuating circuit for operating the air compressor and a memory circuit receiving a signal from the temperature detector to stop the operation of the actuating circuit when the temperature detected by the temperature detector exceeds a predetermined level.

Abstract: A control circuit for a vehicle level adjusting apparatus which avoids performing vehicle level adjustment in response to momentary changes in the vehicle level during driving of the vehicle, and at the same time provides a prompt vehicle level adjustment in response to essential or substantial changes in the vehicle level during a halt or rest state. The control circuit includes a first circuit which receives at least one first signal based on a comparison between a reference vehicle level range and an actual vehicle level to make a judgment as to the necessity of an adjustment of the vehicle level and issues a second signal having a first signal status when the adjustment is judged to be necessary and a second signal status when the adjustment is judged to be unnecessary.

Abstract: A standard cargo container is reconstructed into a readily transportable hospital unit for providing emergency treatment to injured survivors at a site of a major disaster, wherein the structural features embodied by the container contribute to its transportability to the disaster site (except, of course, instead of cargo, the container houses medical facilities and supplies), and subsequently at the site the container has surface transportability as a result of internal combustion engine-operated front wheels and hydraulically-operated rear wheels. The rear wheels also have the noteworthy operating mode of being extendable and retractable so as to maintain a horizontal orientation in the container during the loading and unloading thereof from a cargo-type aircraft.

Abstract: The present invention is directed to an assembly for stabilizing a vehicle supported on at least three pairs of wheels or tracks, wherein various pairs of wheels are selectively connected to one another in bogie style so as to reduce tipping movement of the vehicle chassis as the wheels travel over uneven terrain. A second embodiment of the invention discloses means to control the bogies with respect to their direction of rotative movement. Fluid damping means are provided for some or all of the wheels. These damping means are interconnected with longitudinal and diagonal conduits, with pumps and valves placed to control the movement of the fluid medium between the respective damping means.

Abstract: A safety system for a vehicle having a chassis, including two parallel spaced-apart legs and an axle assembly for each of the wheels, includes a suspension assembly including an air piston arrestor pivotably coupled between the chassis and one of the axle assemblies, a device for arresting the air piston arrestor in a relatively rigid, non-compressible state, and an electromechanical device for activating the arresting device.

Abstract: An excavator-hoist construction vehicle includes an undercarriage with a superstructure supported on it for rotation about a vertical axis. A boom is hinged to the superstructure and supports a tool for digging, lifting or the like. Two pair of supporting legs are attached to the undercarriage, one pair extending forwardly and the other rearwardly. The supporting legs are adjustably movable in the vertical and horizontal directions. Each of the ends of the supporting legs spaced outwardly from the undercarriage are arranged to support a wheel. The wheels on one pair of the supporting legs can be steered and at least one wheel on the supporting legs can be driven.

Abstract: The device in accordance with the invention operates and controls the tilt of a body of a vehicle and is operated by a driving shaft driven in rotation by movement of the vehicle. A rocking mechanism that is capable of being driven in two opposite directions by the driving shaft employs two disengageable coupling assemblies to operate rocking of the body, each in one direction. Progressive engagement of one or other of the coupling assemblies is operated directly by a pendular mass. Deviation of the latter to one side or the other of a plane passing through its axis of oscillation and parallel with the median plane of the body, causes progressive engagement of that one of the two coupling assemblies. This causes rocking of the body in a direction which enables the median plane of the latter to be brought back into the direction of the apparent vertical passing through the axis of oscillation and the center of gravity of the pendular mass.

Abstract: A vehicle for removing slash from steep logging slopes includes an anti-skid propulsion system characterized by a power winch for reeling in an uphill-anchored cable and a pair of crawler tracks (or large tires) driven in synchronization with the winch. The vehicle has an articulating tail boom for working against the cable to assist in maneuvering the vehicle along the slope and stabilizing the vehicle during slash gathering operations. A knuckle boom which is extendable from the vehicle has a grapple for gathering slash within a relatively large area around the vehicle. Removal of slash from the operating site of the vehicle is accomplished by transporting the slash to an access landing using a mobile slash wagon or by chipping the slash using a chipper mounted on the vehicle and then pneumatically carrying the chips through a pipe to a storage van at an access landing remote from the vehicle.

Abstract: This invention relates to a public works machine such as a self-propelled hydraulic shovel. This machine comprises a lower chassis provided toward one end with a pair of carrying wheels mounted on wheel-carrying arms that may be adjusted and raised, and toward the other end with raisable stabilizers. A superstructure is mounted on this lower chassis by a positioning ring. The superstructure carries, on the one hand, working equipment of the machine and, on the other hand, a pair of carrying wheels mounted on raisable arms. The control of the machine is effected by pivoting of the two parts about the positioning ring. This machine permits travelling on uneven ground while the machine remains level.

Abstract: An electric vehicle-level control device is provided for controlling an electrically operated fluid pressure control device for a pneumatic, hydraulic or hydro-pneumatic suspension unit such as a hydro-pneumatic suspension strut of a self-levelling suspension system for an automotive vehicle. The control device comprises a timing or delay circuit adapted to deliver an output signal at a predetermined retarded timing following generation of (1) a signal responsive to a vehicle level higher or lower than a predetermined value, or (2) a signal responsive to shutdown of a power plant such as an internal combustion engine of an automotive vehicle.

Abstract: A pair of hydraulic locking cylinders for a vertically oscillatable wheel axle on the carrier frame of a mobile crane are interconnected and controlled by a hydraulic double-locking valve which is responsive to the centered or off-centered rotary position of the boom-carrying rotatable upper section of the crane. The double-locking valve comprises a pair of normally closed ball-type check valves which are operated by a valve stem comprising independently movable upper and lower sections. The upper valve stem section is positioned by a cam on the crane upper section and the lower valve stem section is positioned by a pneumatic actuator which is controlled by a solenoid valve selectively actuatable by an electric override switch in the crane operator's cab. The upper valve stem is moved to down (valve open-axle unlocked) position by the cam when the crane upper is centered on the carrier frame. The upper valve stem moves to up (valve closed-axle locked) position when the crane upper is rotated off-center.

Abstract: A crawler-type lower machinery comprises a pair of crawlers, left and right, a main frame and a rocking beam both connecting the two crawlers together, an intermediate frame connecting the main frame with the rocking beam, a table mounted on the main frame, and two groups of lift means arranged at right angles to each other, one group being located between the main frame and the table and the other between the intermediate frame and the main frame. When traveling, the two crawlers are able to pitch and sway, independently of each other, along the ups and downs of the ground. The lift means are operable so that the inclination of the table with respect to the crawler-bearing ground surface can be adjusted in every direction.

Abstract: Transport apparatus is provided for heavy duty equipment which allows for the interchangeable connection of the caterpillar power drive units used for transport of a plurality of supporting frames holding different pieces of heavy equipment. A lesser number of expensive drive units is required for moving a lot of equipment. This is achieved by providing separate support bases or feet for each of the supporting frames. Each of the bases include a mechanism for lifting the supporting frames so that the power drive units can move under the supporting frame being transported. Also, each of the caterpillar power drive units include a connector device for connection to the supporting frame to be supported. Each connector device, in turn, includes hydraulically operated arms for relative vertical displacement between the drive unit and the support frame and universal relative horizontal displacement.

Abstract: A portable auxiliary cooling tower which is transportable over-the-highway for temporary or permanent use at a desired site. The tower is typically constructed on a trailer frame and is designed to provide maximum air flow for maximum cooling to temporarily replace or supplement larger fixed cooling tower cells. Another use of the portable cooling tower is to aerate stock ponds, chemical holding ponds and the like.

Abstract: An inclination maintaining system for a discharge chute of a ready-mix concrete truck or the like including a body on which the chute is pivotally mounted for movement about an axis extending horizontally and transversely of the chute, the system having sensors mounted on the chute for sensing inclination thereof relative to the horizontal about the axis, an extensible and contractible member interconnecting the body and the chute in attitude controlling relation to the chute, and control elements responsive to the sensors for extending and contracting the member so as to maintain the chute at the inclination.

Abstract: A leveling device is attached to a vehicle to assist in maintaining a body assembly at its preferred height even when added weight is installed in the body assembly of the vehicle. The leveling device includes a housing which is connected to either the body assembly or a wheel mounting assembly and a piston which is movably supported in the housing extends therefrom to connect with the other of the body assembly and the wheel mounting assembly. The piston cooperates with the housing to substantially define a pair of chambers and a passageway within the piston connects the chambers with each other. A pressure source, such as a vacuum or low pressure air pump, is in communication with the passageway and a first valve normally closes communication between the pair of chambers and the pressure source.

Abstract: A portable auxiliary cooling tower which is transportable over-the-highway for temporary or permanent use at a desired site. The tower is typically constructed on a trailer frame and is designed to provide maximum air flow for maximum cooling to temporarily replace or supplement larger fixed cooling tower cells. Another use of the portable cooling tower is to aerate stock ponds, chemical holding ponds and the like.

Abstract: A system or structure for supporting a construction rig, such as a crane or the like, is formed with four bearing members each of which is maintained in contact with a ground formation over which the rig is to be moved by deflective action of the support structure. In the operation of the device, when a first bearing member is deflected relative to a reference plane, a second bearing member located diagonally opposite the first bearing member is deflected relative to the reference plane in the same direction by approximately the same distance. At the same time, a third and fourth support bearing member of the support system are each deflected relative to the reference plane in a direction opposite to the direction in which the first and second support bearing members are moved by approximately the same distance as the first two support bearing members.

Abstract: This specification discloses an off-road vehicle that both articulates and oscillates, thereby enabling achieving a highly maneuverable, more nearly level working platform from which attachments can be operated with utmost effectiveness. The vehicle is characterized by front and rear sections, each carried by two wheels and connected at an articulating steering joint with steering rams and steering means; and a mechanism on the front section for leveling the front section. The leveling mechanism includes a front frame member that supplies the main structural support for the front section and is pivotally connected with a front axle, with hydraulic rams disposed on either side of the pivotal connection and connected via control valve with a source of high pressure hydraulic fluid for attaining and holding a predetermined, or substantially level, position.

Abstract: A high mobility wheeled vehicle for transporting long loads, such as trimmed tree trunks or whole trees, over roadless terrain. The vehicle has front and rear quad wheel assemblies pivotally connected to a centrally disposed elongated bed frame so as to permit lateral rotation of these assemblies about a roll axis disposed below and parallel to the longitudinal axis of the bed frame. A linkage type roll control means interconnects the quad wheel assemblies and the bed frame to proportionately control the relative angular movement of the bed frame with respect to the quad wheel assemblies. The roll control means includes a plurality of interconnected links plus a pair of power extensible links for selectively adjusting the steady state position of the vehicle bed relative to the quad wheel assemblies in either direction.In a modification, parallel links are employed to interconnect the quad wheel assemblies with pivotally mounted load supporting cradles.

Abstract: The method and apparatus for moving a large object using four crawler transporters disposed in a rectangular or a trapezoidal pattern under the object and which support and move the object with an effective three point suspension.

Abstract: An improved portable grade averaging apparatus comprising an averaging bar assembly that serves as an elevation control reference for a track supported road working machine. One end of an averaging bar member is pivotally supported by a forward steering drive track assembly that serves as a forward walking beam, and the other end of the averaging bar member is pivotally supported by a rear track assembly that serves as a rear walking beam. A grade sensor assembly supported on one side by the road working machine contactingly engages the averaging bar member for directing the elevation of one side of the road working machine to establish the elevation of a working tool supported by the road working machine.

Abstract: A construction vehicle has pairs of tandem roadwheels on each side thereof. Each of the roadwheels is mounted to the vehicle via a parallelogram linkage. The roadwheels are each driven by drives universally mounted to transmit power from differentials thereto. Interconnected hydraulic cylinders act between the frame and each wheel to adjust the relative vertical positioning therebetween and provide equal tire loading on the tires on each side.

Abstract: A portable grade averaging apparatus comprising an averaging bar assembly that serves as an elevation control reference for a track supported road working machine, one end of the averaging bar assembly being pivotally supported by a forward walking beam and the other end of the averaging bar being pivotally supported by a rear track assembly that serves as a track walking beam. A grade sensor assembly supported on one side by the road working machine contactingly engages the averaging bar assembly for directing the elevation of one side of the road working machine to establish the elevation of a working tool supported by the road working machine. A lifting bracket supported by the road working machine serves to lift the grade averaging apparatus into a grade clearing position while the machine is being maneuvered into a cutting position.

Abstract: A vehicle steering and chassis oscillation system with a steering mechanism for steering the vehicle through articulation and a chassis oscillation mechanism for controlling the transverse oscillation of the chassis through pivoting of a link in the articulating mechanism of the vehicle. The oscillation control of the chassis is accomplished through pivoting of a connecting link between the axle and the chassis to tilt the axis of articulation as the connecting link is pivoted. The oscillation of the chassis through oscillation of the articulating axis provides for a means of leveling the vehicle chassis when the terrain carrying the vehicle is on an incline.

Abstract: A mobile crane having four hydraulically operated outrigger assemblies, two on each side, and each having a horizontal extend cylinder and a vertical stabilizer cylinder, includes a electrohydraulic control system whereby any outrigger assembly can be individually extended, retracted, raised or lowered, and whereby two outrigger assemblies on the same side of the crane can either be extended or retracted together or raised or lowered together. The control system comprises eight selector switches (usable individually or in appropriate combinations) for controlling operation of a double solenoid main control valve which conditions the system for extend or retract operation and for controlling operation of four double solenoid cylinder control valves, each of which controls, alternately, one horizontal extend cylinder and one vertical stabilizer cylinder. Each vertical stabilizer cylinder is provided with a lockout valve to prevent drifting.

Abstract: Compensating cylinders are provided for pairs of transverse steering linkages connecting pairs of tractors that steer in unison on opposite sides of a main frame of a heavy construction machine whereby the steering linkages automatically extend and retract to accommodate the changes in length imposed by changes in the slope or off-sets in the grade being negotiated by the machine.

Abstract: A pivotal implement, such as a pivotal plow includes an implement frame having an axle extending longitudinally in the direction of travel which is pivotally supported on an undercarriage for movement relative thereto about its axle. The undercarriage includes a pair of spaced apart wheels each of which is supported by a transversely-extending axle which is coupled to the undercarriage for independent vertical movement in a substantially vertical direction, relative to the longitudinal axis of the undercarriage, for movement between an upper limiting position and a lower limiting position. Blocking means are associated with each of the wheel axles for preventing a tipping of the undercarriage relative to the implement frame about its longitudinal axis.

Abstract: A three-wheeled motorcycle in which two front wheels are interconnected with a conventional motorcycle frame by a parallelogram configured coupling assembly utilizing a pair of cross members pivotally connecting hubs of the front wheels and pivotally connected to the frame. Foot resting platforms are positioned on either side of the motorcycle, being fixedly connected to one of the cross members in the front which is pivotally connected to the motorcycle frame.

Abstract: A balance suspension system for three-wheel vehicles wherein such system is applicable in particular to the oppositely-reciprocating related wheels of the vehicle. The system is designed such that the vehicle tends to maintain an essentially horizontal position, relative to its transverse axis, even though wheels may pass over bumps or dips or the vehicle itself may be traversing sloping terrain. Structure is provided such that a vertical movement in one of the oppositely-reciprocating wheels is offset by an opposite movement in the remaining wheel whereby the transverse axis of the vehicle is essentially maintained on a horizontal axis. Such precludes the vehicle from dipping or spilling. Further provision is made so that, as the vehicle is cornering, the transverse orientation of the vehicle dips inwardly, tending to oppose centrifugal force and thereby maintain the integrity of vehicle travel. Power balancing is also supplied.

Abstract: Hydraulic height-adjustment vehicle suspension system includes an arrangment for blocking up the suspension and adapted to prevent the collapsing thereof when the vehicle is kept stationary for a prolonged time period. The blocking arrangement includes a buffer member retractable and engageable in the fashion of a chock or the like, between a movable member of the suspension system and a fixed portion of the body or chassis of the vehicle. Preferably, a control for each buffer member includes a hydraulic receiver operating against the force of a return spring urging the buffer member to its retracted position, and a hydraulic chamber is provided which communicates with the receivers and is urged to its hydraulic fluid delivering condition by the actuation of the hand brake control of the vehicle to its brake applying position.