Patent ID: 8985950
Filing Date: 2015-03-24
Classification: B64C,F16F

Abstract:
1. A damper device for damping the relative movements of two elements of a mechanical system, which damper device comprises: a damping chamber filled with a hydraulic fluid and secured mechanically to one of the elements; a rod connected to the other of the elements and having a piston received and movable in the damping chamber in such manner as to define two hydraulic compartments; at least one calibrated orifice, provided in the piston for throttling the hydraulic fluid flowing from one hydraulic compartment to another hydraulic compartment while the piston is working in traction or in compression; and at least one compression hydraulic peak-limiting valve and at least one traction hydraulic peak-limiting valve, throttling the hydraulic fluid flowing from one hydraulic compartment to another hydraulic compartment, as from a determined amplitude of movement of the piston; wherein said damper device further comprises additional hydraulic means that are active in compression and in traction as soon as the piston reaches the end of its stroke, so as to constitute a progressive hydraulic abutment damping the end-of-stroke jolts of said piston, which additional hydraulic means comprise: