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7590478 |
Method for controlling the quantity of air in a self-contained air supply system for a chassis
In order to simplify air flow control in a self-contained air supply system, an average control speed is calculated on the basis of a defined movement of the air springs ( 3, 4 ) and compared with...
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7497452 |
Hydro-pneumatic vehicle suspension system with a double acting cylinder and accumulators
A suspension system dampens motion between two components of a vehicle, such as the wheels and the chassis. An assembly of a cylinder and a piston is connected to both components. The piston...
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7494133 |
Four wheel chassis for a floor conveyor, a counterweight stacker in particular
A four wheel chassis for a floor conveyor, a counterweight stacker in particular, in which the ends of the front and rear axle or the wheels, respectively, are supported with respect to the vehicle...
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7469175 |
Arrangement and method for calculating the chassis height at a vehicle
Method and device for calculating chassis height of a vehicle that has at least three air-suspended wheel axles ( 2, 3, 4 ). The device includes a control unit and two level sensors ( 9, 10 ). The...
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7431309 |
Ground contact load control apparatus for a vehicle
In a ground contact load control apparatus for a vehicle having front and rear, left and right load bearing means ( 11, 12, 13, 14 ) which support the ground contact load of each of the front and...
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7357395 |
Device for controlling suspension performance of a vehicle having variable axle loads
A device for controlling suspension performance in a vehicle having variable loads on an axle, a level control system, and a hydropneumatic suspension apparatus between unsprung and sprung masses....
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7226064 |
Locking anti-motion suspension
A skid steer vehicle has a suspension that includes a control arm pivotally coupled to the vehicle chassis that is supported by a hydraulic cylinder connected to an accumulator to provide...
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7219779 |
Hydro-pneumatic suspension system
A hydro-pneumatic suspension system includes one or more hydraulic suspension cylinders mounted between the vehicle body and the axle. Each cylinder includes a piston chamber and rod chamber, each...
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7204478 |
Height control valve with universal mounting for a suspension system
A height control valve for use in a vehicle suspension system for controlling the ride height of the trailer, the height control valve provided with a universal mounting for allowing greater...
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7192034 |
Load based suspension motion limiting
An articulated loader has an articulated chassis and two A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there...
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7192033 |
Trailing arm suspension and height control system with motorized valve therefor
A trailing arm suspension for a vehicle. The trailing arm suspension having a height control system for controlling the ride height of the suspension relative to the vehicle. The height control...
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7163208 |
Hydropneumatic suspension system for vehicles
A hydropneumatic suspension system for a vehicle with a level control, in particular for the front axle of a tractor, includes a first 2/2 directional control valve having a regulating-up function...
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7048280 |
Hydropneumatic axle suspension for vehicles having greatly varying axle loads
A hydropneumatic axle suspension for vehicles having greatly varying axle loads, in particular for front axles on tractors having hydraulic suspension cylinders, which are connected to...
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7028996 |
Vehicle suspension system and height control valve therefor
A height control valve for controlling the relative height between a vehicle frame and a trailing arm suspension. The height control valve comprises a housing defining an interior chamber and...
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6997464 |
Lift axle suspension
A lift axle suspension includes an axle and a first suspension air bag acting one of directly or indirectly in a downward direction upon the axle. A lever is provided having a first end, a second...
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6959932 |
Electronic height control
A method for controlling the ride height in a suspension of an over the highway truck or tractor based on rear axle load. A load on the rear axle is measured. An optimum ride height is calculated...
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6948721 |
Variable leveling valve apparatus for a vehicle
The invention is disclosed to variably control the amount of compressed air flowing per unit hour depending on the change in the level position of the wheel axles in a moving vehicle when the...
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6840279 |
Pneumatic switching valve for systems for lifting and lowering the body of vehicles including air suspension
A pneumatic switching valve ( 1 ) for systems for lifting and lowering the body of a vehicle including air suspension includes a mechanical actuation element ( 33 ) for adjusting a lifting...
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6824146 |
Air suspension system of a vehicle
An air suspension system for a vehicle wherein a valve means for varying the resilience of an air spring in response to changes of vehicle height is integrally formed with an air spring to be...
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6786492 |
Method and device for controlling the suspension performance in vehicles having hydropneumatic suspension devices and highly variable axle-load ratios
A method of controlling suspension performance in vehicles having hydropneumatic suspension devices between suspended masses and unsuspended masses and extremely variable axle load ratios, in...
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6783138 |
Actuator for adjusting the ride of a vehicle
An actuator assembly for moving an air valve between a position in which air is admitted to an air bag mounted in a vehicle and another position in which air is released from the air bag. The...
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6648308 |
Spring apparatus
The invention relates to a vehicle spring apparatus comprising housing having fluid sealed therein. The housing comprises a cylinder with a slidably fitted piston and a piston rod connected at one...
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6623016 |
Control system for lifting and lowering the body of an air-suspended vehicle including level control
A control system is designed to lift and lower the body of an air-suspended vehicle including an axle and level control. The system includes a source of compressed air, a plurality of...
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6513820 |
Air spring system for a two axle motor vehicle
An air spring system for a two axle motor vehicle has a compressed air source and control valves. The control valves are assigned to the individual motor vehicle wheels and by means of which the...
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6431557 |
Driving mode ride height adjustment
Apparatus for adjusting the height of a vehicle frame on a vehicle is disclosed including a pneumatic suspension system for adjusting the elevation of the vehicle frame, and a controller for...
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6416061 |
Hydraulic suspension system
This invention relates to hydraulic suspension systems and in particular to vehicle oleopneumatic suspension systems employing sliding pillar struts. There is provided a suspension system for a...
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6412790 |
Vehicle suspension and rotary height control valve for same
A height control valve is preferably adapted to be mounted in a trailing arm suspension and fluidly interconnected to a source of pressurized air and to an air spring. The height control valve...
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6398227 |
Ride control apparatus and method
An apparatus for adjusting the ride of a load carrying vehicle is disclosed. The apparatus includes a sensor, a controller, and an adjustable accumulator assembly. The sensor measures a load on a...
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6378878 |
Self-leveling suspension system
A single air spring positioned under one side of a vehicle provides side to side leveling of the vehicle. Main springs support the vehicle above a pair of coaxial wheels or coaxial wheel sets. An...
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6371466 |
Overload support apparatus for leaf spring suspension systems
An apparatus for mounting to a truck suspension system which provides reinforcement to standard leaf spring suspensions in a manner that is adjustable and flexible. It provides improved weight...
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6324447 |
Process and device for stabilizing a vehicle on the basis of a determined torsional value
A method for stabilizing a vehicle to avoid at least one of a vehicle rolling over about a vehicle axis oriented in the longitudinal direction of the vehicle and the vehicle sliding in the...
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6308963 |
Levelling valve actuating apparatus
A levelling valve actuating apparatus is provided for converting a linear displacement resulting from a vehicular height change into a rotational displacement and controlling operation of a...
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6293562 |
Method and apparatus for controlling ride height of a wheeled vehicle
In a method for controlling the ride height of a wheeled vehicle, the distance between a vehicle body and a wheel suspension unit for at least one wheel provided with a gas-filled tire is adjusted...
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6234493 |
Level control system
A level control system controls the distance between the vehicle axles and the vehicle frame of a vehicle. The suspension is a full or partial air suspension, wherein the vehicle frame over the...
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6224069 |
Body leveling system for motor vehicle
A body leveling system for a motor vehicle including a rigid axle housing, a pair of dirigible wheels on the rigid axle housing, and a pair of air springs between the body and the rigid axle...
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6203026 |
Air suspension override system
An override system for use in combination with an automatic air suspension leveling system for a vehicle is provided The override system includes a cylinder having a piston and a piston rod...
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6173974 |
Detecting jacking or hoisting of a vehicle having a suspension system that includes gas levelers
An automotive vehicle suspension system includes a respective gas leveler (42) at each of multiple wheels. A compressor (12) and reservoir (46) serve the gas levelers. The compressor has an...
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6152457 |
Front discharge transit mixer
A front discharge transit mixer having an air spring associated with each wheel. A load sensing system senses the pressure in each air spring and is analyzed to determine a load at each wheel. The...
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6142496 |
Low load floor trailer and suspension system
A towable trailer has a load floor supported by air springs on a torsion box suspension system. The load floor consists of a plurality of preformed panels comprised of a plate section and a...
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6092816 |
Vehicle height adjusting apparatus and cylinder system used therefor
A cylinder 3 is fitted with a piston 5. A pump rod 12 is fitted into a pump tube 11 in a piston rod 6 to form a pump chamber 13. An oil tank 17 is connected to the pump chamber 13 by a line 16...
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6036200 |
Rolling reducing apparatus for a vehicle
A rolling reducing apparatus for a vehicle includes a suspension system for absorbing all sorts of shock generated by driving the vehicle and for supporting a vehicle chassis. The suspension system...
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5988655 |
Vehicular height adjusting device
According to the present invention there is provided a vehicular height adjusting device capable of diminishing a shock caused by a sudden change in pressure of an accumulator oil chamber at the...
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5988654 |
Automatic leveling system for off-road equipment
An automatic leveling system for off-road vehicles having a cab and boom assembly rotatably mounted on a carrier base via a tilt table. The system includes a sensing device and control circuit for...
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5984322 |
Vehicle levelling device
A vehicle levelling device includes a vehicle body with a rear section and a rear axle carried under the rear section of the vehicle body to provide support therefor. A support yoke is hingedly...
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5935181 |
Automotive vehicle suspension control system
A suspension control system for use with shock absorbers provided between sprung and unsprung masses of an automotive vehicle at the positions of the respective vehicle road wheels for providing...
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5871217 |
Levelling valve for automatically keeping constant the vehicle height of a commercial vehicle with air suspension
A levelling valve is provided for automatically keeping constant the vehicle height of a commercial vehicle with air suspension. The levelling valve comprises a spring loaded double valve body...
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5684698 |
Vehicle attitude and average height control apparatus
An attitude control apparatus, for a vehicle having a body and a plurality of wheels, has an actuator operated by a fluid for expanding each suspension of the vehicle to control the stroke of each...
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5678847 |
Active suspension system
In an active suspension system, an electromagnetic actuator is interposed between a tube connected to a vehicle body and a rod connected to a wheel. The electromagnetic actuator includes a motor...
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5671142 |
Apparatus and method for controlling damping force exhibited in vehicular damping force variable shock absorber
In a suspension control system for a vehicle having a plurality of damping force variable shock absorbers, at least either or both of positive and negative dead zone threshold values (±X 2i0 ')...
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5662357 |
Car height control apparatus
A car height control apparatus comprising: a weight sensing section for sensing a rear shaft force of a car; a bellows in which one end is fixed at the lengthwise frame, and the other end is...
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