SHOCK-ABSORBER WITH DEFERENTIAL COMPRESSION FORCE Russian patent published in 1997 - IPC

FIELD: automotive industry. SUBSTANCE: shock-absorber has working cylinder, outer reservoir for fluid, working piston with a rod, by-passing valve, compression valve, and inlet valve. An additional piston is received in the above-piston space of the working cylinder. The dummy opening of the piston faces the working piston for permitting interaction with the latter. The outer cylindrical surface of the additional piston is provided with longitudinal through grooves. The top end face of the piston is provided with a flexible ring with radial calibrated grooves. EFFECT: enhanced shock-absorbing. 2 dwg