PNEUMOHYDRAULIC SPRING Russian patent published in 1997 - IPC

FIELD: transport engineering. SUBSTANCE: rod space 9 of second rod 4 communicates with space 6 of first rod 2 through central hole 10 in piston 5 and it is connected by tubes 12 and 13 with ring spring-loaded space 11 between walls of first and second rods 2 and 4, respectively, which are connected, in their turn, through channels 17 and 18 made in first rod 2 with ring spring-loaded space 16 between walls of cylinder 1 and first rod 2. Check valves 15 and 20 and throttles 14 and 19 of damping hydraulic systems are installed in tubes 12 and 13 and channels 17 and 18. Spring-loaded ring floating pistons 22 and 24 with holes 23 and 25 are installed in upper parts of space 7 of cylinder 1 and space 6 of first rod 2. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg