HYDRAULIC DAMPER Russian patent published in 2004 - IPC

FIELD: mechanical engineering; transport facilities. SUBSTANCE: proposed hydraulic damper includes working cylinder where elastic rod with piston rigidly mounted on it is located. One end of piston is provided with radial fins and projections having passages bent at right angle to its axis. Second end of piston is also provided with similar fins and projections having passages bent relative to piston axis be directed to opposite side as compared with those on first piston. Piston consists of two parts; each part of piston is rigidly secured on separate rods movably mounted one inside other; one rod is hollow and other rod is solid. Bow-shaped recesses are made in zone of engagement of passages. EFFECT: enhanced efficiency. 2 cl, 4 dwg