Patent ID: 6148712
Filing Date: 2000-11-21
Classification: F15B,F16K,Y10T

Abstract:
A hydraulic multiposition valve for selecting the steering modes of vehicles with multi-axle steering, comprisinga) several position-seat valves (31, 33, 35, 37, 39, 41, 43) which have at least two switching positions and which communicate via lines for the hydraulic medium with one another and with a number of controlled connections (A, B, C, D, L, R) in such a manner that the desired switching positions of the multiposition valve (13) can be selected by the actuation of the seat valves (31-43), andb) an actuating arrangement (29) for actuating the seat valves (31-43) which effects a mechanical coupling of the seat valves (31-43) and which is adapted for being locked in detent fashion in the switching positions of the multiposition valve (13),said actuating arrangement (29) comprising several cam discs (47, 49, 51, 53, 55, 57, 59) acting upon the seat valves (31-43) and disposed on a common shaft (45) andsaid actuating arrangement (29) further comprising a detent locking gear (61) rotatably driving the shaft (45).