Adjustable air suspension shocks with rotatable damper assemblies, apparatus, systems and method for motor vehicles, such as automobiles, vans, trucks, off the road vehicles, motorcycles, the like. Deflating interior air springs/airbags (bladders) allows for pistons on shock absorbers to expand outward separating lower front and rear frame portions which effectively lowers the motor vehicle to the ground surface and for the driver to have a firmer ride. Inflating the airbags (bladders) allows for the pistons on the shock absorbers in the devices to retract so that devices have a more shock absorbing effect giving the driver and passenger(s) a smoother ride, which also raises the motor vehicles above the ground surface. A sleeve attached to the air shock allows for a damper assembly to rotate relative to the air shock so that it can be installed within mounting brackets where the axial mounting openings need not be perpendicular to one another.

A seal arrangement for an air spring system for sealing off a shock-absorbing damper is disclosed. The shock-absorbing damper is situated in a rolling tube and in another tube, where the air spring system has at least one integrated control valve for the admission of compressed air into a pressure chamber formed between the outer tube, the rolling tube, and an air spring bellows that connects the outer tube and rolling tube. The seal arrangement is arranged between an inner circumferential surface of the rolling tube and an outer circumferential surface of the shock-absorbing damper and/or between an inner circumferential surface of the outer tube and the outer circumferential surface of the shock-absorbing damper. A support ring which is of step-shaped form on an outer circumferential surface is arranged on a distal end of the rolling tube and/or on a distal end of the outer tube.

A device for adjusting a foot point of a vehicle spring element includes a first wall element for connecting to a vehicle, a second wall element spaced from the first wall element and connecting to the spring element, and a chamber disposed between the first wall element and the second wall element for changing the distance between the first wall element and the second wall element by changing a volume of the chamber, the chamber having an incompressible fluid and the first and/or second wall element including a passage opening for the incompressible fluid to the chamber. In embodiments, the passage opening is fluidly connectable to a supply/discharge device for the incompressible fluid, and the chamber has a chamber wall with a third wall element extending from the first wall element to the second wall element, the mass of which is constant when the volume of the chamber is changed.

A sensor arrangement for an air suspension system of a vehicle has a change-over valve for each air spring of a vehicle axle or of multiple, adjacent tandem axles, and has a shutoff valve for the air spring of each vehicle wheel of the axle or for each of the air springs on each side of the tandem axles. The respective changeover valve and the shutoff valves are structurally combined in a valve block arranged at a distance from the air springs. For measuring the pressure in each of the bellows of the air springs, pressure sensors are arranged in or on the valve block. Each of the pressure sensors is connected at the output of the shutoff valve associated with the sensor to the connection line of the bellows of the associated air spring or of the bellows of the associated air springs.

Suspension for a wheeled vehicle provided with at least one wheel and a frame, having at least one elastic element functionally combinable between the wheel and frame is disclosed. The suspension has at least one hydro-pneumatic spring functionally combined in series with the elastic element so that the equivalent spring modulus (Keq) of the elastic element and hydro-pneumatic spring is variable as a function of the distance between the frame and wheel. The hydro-pneumatic spring is shaped and sized to behave also as an energy dissipator in series to the elastic element.

An air spring assembly or air spring damper with an integrated valve control for controlling a level position of a vehicle or of a driver's cab includes a rolling tube, a lid and an air spring bellows which together delimit a pressure chamber with compressed air. A control valve includes an actuation device for feeding compressed air into the pressure chamber or for discharging compressed air from the pressure chamber. A compression spring device has a first end operatively connected to the rolling piston or the lid and a second end operatively connected to the actuation device. The compression spring device is configured with at least two parts including a central spring facing towards the rolling piston or the lid and a control valve biasing spring facing towards the control valve. The central spring is biased to a greater extent than the control valve biasing spring.

An air spring for damping and controlling a level position of a drivers cab or of a motor vehicle includes a lid, a rolling piston and at least one air spring bellows. At least one damping device is integrated into the air spring. A level control system is integrated into the air spring and is configured to at least one of supply and discharge compressed air, gas or a compressible medium so as to control the level position of the driver's cab or of the motor vehicle.

A suspension arrangement for a vehicle, in particular a utility vehicle having a base and a structure, is disclosed. This arrangement includes at least one first spring and at least one second spring, the at least one first spring and the at least one second spring having spring attachments which are connected to attachment apparatuses of the structure on one side and of the base on the other. The at least one second spring is fastened to the base by way of at least one adjustment device. An adjustable air spring suspension arrangement and methods for controlling the suspension arrangements are disclosed.

A dual volume air spring assembly comprising a first member, a second member, a deflectable diaphragm configured to at least partially defines a primary air volume chamber, and also at least partially defines a secondary air volume chamber. The deflectable diaphragm deflects from a first position to a second position due to a change of air pressure difference created between two chambers. In another aspect, the air spring assembly is provided with a damper coaxially configured with the assembly. In another aspect, the air spring assembly includes a piston spring configured with the primary air volume chamber. Various values of desired spring rates for optimum performancecontrol, safety and comfortcan be achieved by changing the difference in the air pressures of the two chambers and in the spring assembly.

A device for adjusting a foot point of a vehicle spring element includes a first wall element for connecting to a vehicle, a second wall element spaced from the first wall element and connecting to the spring element, and a chamber disposed between the first wall element and the second wall element for changing the distance between the first wall element and the second wall element by changing a volume of the chamber, the chamber having an incompressible fluid and the first and/or second wall element including a passage opening for the incompressible fluid to the chamber. In embodiments, the passage opening is fluidly connectable to a supply/discharge device for the incompressible fluid, and the chamber has a chamber wall with a third wall element extending from the first wall element to the second wall element, the mass of which is constant when the volume of the chamber is changed.