Hydraulic shock absorber

Hydraulic shock absorber with compensator, for vehicles, comprising:

• a cylinder sealed at one end which is provided with an attachment for one of the two parts of the vehicle which needs cushioning;
• a stem presenting at one end another attachment for the other of said two parts of the vehicle and at the other end a piston engaged within said cylinder to make a sliding seal with said cylinder, said piston being equipped with valve means controlling the flow of a liquid between a first and a second pressure chambers formed within said cylinder by the opposed faces of said piston, the first pressure chamber being traversed by the said stem, said pressure chambers being filled with said liquid to ensure proper braking to the shock absorber during compression and expansion phases;
• means connecting the second pressure chamber with a variable volume compensator device which absorbs and releases the liquid excesses which cannot flow from the second chamber to the first chamber, characterized in that the compensator is separate from the cylinder and that the two parts are prearranged for the reciprocal sealing connection by means of at least one spherical joint, so that the compensator can be rotated and inclined with respect to an axis substantially orthogonal to the axis of the cylinder, and can then be blocked in the desired position.