TWO-WAY HYDRAULIC DAMPER Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: hydraulic damper has case and piston provided with a rod. The piston is spring-loaded from both sides. Ring groove is provided in the middle part of inner surface of the case. Sides of the piston are provided with oppositely directed passages cross-sections of which decrease in the direction of the ring groove forming edges on side of the piston. Distance between the edges and distance between each of the edges and adjacent face of the piston are grater than width of the ring groove. EFFECT: enhanced reliability. 3 dwg