DAMPER Russian patent published in 2018 - IPC F16F9/30 

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Damper comprises cylinder with bottom, in which there is a piston. Piston is made as sleeve with parallel and coaxial with casing top and bottom collars. Collars are installed relatively to the internal surface of the casing with clearance. Between the collars a friction material is located. Spring rests against the bottom surface of the piston. Cavity between the piston and casing bottom is filled with friction material with higher friction coefficient. In groove of the internal cavity of the cylinder the lock ring is fixed. Locking ring via the resilient ring is in contact with top surface of the top collar and holds the piston in initial position.

EFFECT: higher efficiency of damping in resonance mode.

3 cl, 1 dwg