HYDRAULIC DAMPER Russian patent published in 2016 - IPC F16F9/16 F16F9/34 

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Damper comprises case, where piston assembly is installed coaxially to form a recuperative cavity. Relief valve compression and extension strokes is made in the form of one spring disk. Valve unit is installed on the opposite side of the cylinder and comprises check and safety valves and at least one throttle channel providing for piston and recuperative cavity. At least one additional throttle channel is located in piston assembly in parallel through throttling channel to communicate piston and rod cavity. Check valve covers additional throttle channel on the side of rod cavity. Ratio of total area of flow passage through and additional throttling channels to flow section area of throttling channels arranged in valve unit and connecting the piston and recuperative cavity, is not less than the ratio of area of rod cavity to area of the rod itself.

EFFECT: providing symmetry of power characteristic.

1 cl, 3 dwg