HYDRAULIC SHOCK ABSORBER Russian patent published in 2013 - IPC F16F9/48 

FIELD: machine building.

SUBSTANCE: shock absorber comprises a jacket of a cylinder, a piston chamber filled with oil, a piston with a stem. The shock absorber includes within the length of piston travel an initial part, in which the piston starts moving, the main moderating part and the final part, in which the piston stops. In the initial part a bend forms a diameter, which is larger than the diameter of the imaginary narrowing surface. In the main moderating part the deviation of diameter reduction gradually increases, as a result of which the diameter becomes less than the diameter of the narrowing surface. At the same time the bend is formed so that a change in the deviation of diameter reduction reaches highest point of the deviation and changes from the positive to the negative one. In the final part the deviation of diameter reduction gradually reduces, as a result of which the bend is formed to stop the piston by damping.

EFFECT: stable stop in the end of damping travel in a wide range of an impact load.

8 cl, 3 dwg