Patent ID: 8245821
Filing Date: 2012-08-21
Classification: B62K,F16F

Abstract:
1. A vibration damping device for a hydraulic shock absorber of a vehicle, comprising a first and a second cartridge, each of which is connected with a respective first and second shock-absorbing means, integrateable in a structural component of a vehicle, wherein each said cartridge comprises: a tubular body closed hermetically at first and second ends thereof; a piston contained in said tubular body that forms two chambers with variable volumes for incompressible fluid, said chambers being a compression chamber, and an extension chamber; a stem, carrying said piston, and exiting from one of the ends of said tubular body, said stem being connected with part of the shock-absorbing means; orifices provided in said piston for bleeding pressurized incompressible fluid; and flow control and throttling means for controlling said orifices, and wherein the first cartridge has located in the extension chamber thereof, which is at low pressure during a compression movement of the first shock-absorbing means, a partition, said partition being provided movable or elastically deformable so as to delimitate a sub-chamber with compressible fluid for volume compensation and propulsion of the incompressible fluid when movement of the piston is reversed; and the second cartridge has in the compression chamber thereof, which is at low pressure during an extension movement of the second shock-absorbing means, a further partition, which is provided movable or elastically deformable so as to form a further sub-chamber with compressible fluid for volume compensation and propulsion of the incompressible fluid when a movement of the piston is reversed.