Patent ID: 6244397
Filing Date: 2001-06-12
Classification: F16F

Abstract:
Double-acting shock absorber, comprising:a first part, which is provided with fastening means for fastening to a first component of a vehicle and comprises a cylinder,a second part, which is provided with fastening means for fastening to a second component of said vehicle and comprises a piston, which is designed to move inside said cylinder and thus delimits, on opposite sides of the piston, a first chamber and a second chamber, a piston rod, which is situated in said first chamber, being arranged between said fastening means of said second part and said piston,a liquid which is arranged in said first and second chamber for transmitting forces from said piston to said cylinder, or vice versa,flow ducts, which allow movement of said liquid from the first chamber to the second chamber, or vice versa,a third chamber delimited between said first and second parts, the volume of which third chamber increasing as the piston rod moves further into the first chamber, and which third chamber is in communication with the second chamber, the volume of the third chamber is defined by the surface area which extends perpendicular to the stroke movement of the piston and by the path covered by the piston rod, said surface area being substantially equal to the surface area of the piston rod perpendicular to its direction of movement.