Patent ID: 9623713
Date: 2017-04-18
CPC Classifications: B60G,F16F

Claim:
1. A spring and damping device comprising: a damping element having a center axis; a coil spring element, an annular component, and a rubber spring element arranged one behind the other in a direction extending parallel to the center axis, the rubber spring element being arranged inside a first volume configured to contain a first fluid, and the coil spring element being positioned to exert a force on the rubber spring element via the annular component; a second volume fluidically connected to the first volume, the second volume being at least partially filled with a second fluid, wherein at least a portion of the first fluid can flow into and out of the second volume; and a device for controlling an amount of the first fluid in the first volume, wherein the annular component is separated from the coil spring element by a rubber stop element, and wherein the first fluid, when present, supports at least a portion of the rubber spring element in a radial direction relative to the center axis, and wherein controlling an amount of the first fluid in the first volume controls a spring rate of the spring and damping device.