# US 10,502,278 B2 · Air spring > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,278 B2 - Document ID: US10502278B2 - Status: Granted - Kind: B2 - Application number: 15/262,088 - Filed: 2016-09-12 - Published: 2017-03-16 - Granted: 2019-12-10 - Earliest claimed: 2015-09-11 - Assignees: Vibracoustic Cv Air Springs GmbH - Applicants: Vibracoustic CV Air Springs GmbH - Inventors: Michael Weber - Web page: https://patentgrep.com/patent/US10502278B2 ## CPC - F16F 9/084: comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder - B60G 15/12: and fluid damper - B60G 17/0521: {the spring having a flexible wall} - B60G 17/0525: {Height adjusting or levelling valves} - B60G 17/0528: {Pressure regulating or air filling valves} - B62D 33/0608: {pneumatic or hydraulic suspension} - F16F 9/04: in a chamber with a flexible wall {(producing hollow articles of plastics, e.g. air bellows, B29D22/00)} - F16F 9/062: {Bi-tubular units} - F16F 9/43: Filling {or drainage} arrangements, e.g. for supply of gas {(filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases F17C)} - F16F 9/50: Special means providing automatic damping adjustment, {i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs}(F16F9/53 takes precedence); {Special means providing self-adjustment of spring characteristics} - B60G 2500/201: Air spring system type - B60G 2500/202: Height or leveling valve for air-springs - F16F 2222/12: Fluid damping - F16F 2228/066: Variable stiffness - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract An air spring for damping and controlling a level position of a driver's 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. ## Claims ### Claim 1 An air spring for damping and controlling a level position of a driver's cab or of a motor vehicle, the air spring comprising: a lid; a rolling piston; at least one air spring bellows; at least two damping devices integrated into the air spring; and a level control system integrated into the air spring and 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, wherein the level control system comprises a compressed-air inlet device configured to supply the compressed air, gas or the compressible medium, and a compressed-air outlet device configured to discharge the compressed air, gas or the compressible medium, and wherein the inlet valve is integrated into the rolling piston. ### Claim 2 (depends on 1) The air spring according to claim 1, wherein the at least two damping devices are connected in parallel. ### Claim 3 (depends on 1) The air spring according to claim 1, wherein the compressed-air inlet device and the compressed-air outlet device are configured in such a way that, during spring contraction, the compressed-air inlet device is opened after a first clearance is overcome, and during spring extension, the compressed-air outlet device is opened after a second clearance is overcome. ### Claim 4 (depends on 1) The air spring according to claim 1, wherein the compressed-air inlet device has at least one inlet valve and a first valve control device. ### Claim 5 (depends on 4) The air spring according to claim 4, wherein the first valve control device has at least one first compression spring and a tappet connected to the compression spring. ### Claim 6 (depends on 4) The air spring according to claim 4, wherein the first valve control device has at least one first compression spring, a guide rod and biasing members disposed in a freely movable manner on the guide rod, with the first compression spring being accommodated between the two biasing members. ### Claim 7 (depends on 1) The air spring according to claim 1, wherein the rolling piston comprises a bottom part, a top part having a rolling contour, and a lid member, the lid member being connectable to the bottom part and the top part in such a way that the parts are fixed relative to one another. ### Claim 8 (depends on 1) The air spring according to claim 1, wherein each of the at least two damping devices has two chambers. ### Claim 9 An air spring for damping and controlling a level position of a driver's cab or of a motor vehicle, the air spring comprising: a lid; a rolling piston; at least one air spring bellows; at least one damping device integrated into the air spring; and a level control system integrated into the air spring and 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, wherein the at least one damping device includes a first damping device having a first chamber with a variable volume, a second chamber whose volume remains constant and a first damping channel device connecting the two chambers with each other. ### Claim 10 (depends on 9) The air spring according to claim 9, wherein the first chamber is delimited by the lid, the rolling piston and the air spring bellows, and wherein the second chamber is delimited by the rolling piston, with the first damping channel device being incorporated into the rolling piston. ### Claim 11 (depends on 9) The air spring according to claim 9, wherein the at least one damping device further comprises a second damping device having a third chamber with a variable volume, a fourth chamber with a variable volume and a second damping channel device connecting the two chambers with each other. ### Claim 12 (depends on 11) The air spring according to claim 11, wherein the third chamber and the fourth chamber are delimited by a cylindrical housing formed in the rolling piston, with the third and fourth chambers being separated from each other by a movable piston. ### Claim 13 An air spring for damping and controlling a level position of a driver's cab or of a motor vehicle, the air spring comprising: a lid; a rolling piston; at least one air spring bellows; at least one damping device integrated into the air spring; and a level control system integrated into the air spring and 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, wherein the level control system comprises a compressed-air inlet device configured to supply the compressed air, gas or the compressible medium, and a compressed-air outlet device configured to discharge the compressed air, gas or the compressible medium, wherein the compressed-air outlet device has at least one outlet valve and a valve control device, and wherein the valve control device has a compression spring and a control rod connected to the compression spring. ### Claim 14 (depends on 13) The air spring according to claim 13, wherein the outlet valve is integrated into the lid, and wherein the valve control device is integrated into the rolling piston.