Patent ID: 8695765
Filing Date: 2014-04-15
Classification: F16F

Abstract:
1. A method for controlling the pressure balance between two working chambers filled with damping medium and pressurized by a system pressure of a shock absorber, in which the shock absorber comprises a cylindrical body filled with a damping medium in the form of an oil and is divided by a main piston into a compression chamber and a return chamber in which a variable first damping medium pressure prevails in the compression chamber and a variable second damping medium pressure prevails in the return chamber, the second damping medium pressure in the return chamber being greater than a preselected minimum pressure due to a resilient device in the form of an accumulator provided in or connected to the return chamber such that energy is stored through a build-up of pressure in a sealed volume of the resilient device delimited against the return chamber and in which the stored energy is used to create a resilient function which gives rise to an increased pressure in the return chamber initially during the compression stroke, wherein the resilient device comprises a first spring part and a second spring part, at least one of the first and second spring parts being moveable relative to the other of the first and second spring parts, the first and second spring parts being mutually sealed and the first spring part being arranged to move within the second spring part.