Patent ID: 6749046
Filing Date: 2004-06-15
Classification: B60G,F16F

Abstract:
A combined spring and shock absorber system for wheel suspensions employing a tubular rolling bellows arranged between a wheel-support structure and a vehicle-body-end attachment, said bellows enclosing a space (5) filled with an incompressible fluid, a first hydraulic accumulator (50) in communication with said bellows space (5), and at least one addtional hydraulic accumulator (60) in communication with said bellows space (5) via a throttle passage (67) and via at least one pre-set differential-pressure-control valve (70), said differential-pressure-control valve (70) being in communication with said bellows space (5) so as to open when the pressure in the bellows space (5) drops below a pre-set threshold value.