Patent ID: 7252029

Claim:
A hydraulic tilting device for tilting a cab of a vehicle between a driving position, in which the vehicle can be driven normally, and a tilted position, comprising: a tilting cylinder having a first and a second connection, a reservoir for hydraulic fluid, a pump having one single pumping direction, which pump has a suction port, which is in communication with the reservoir, and a delivery port for delivering pressurized hydraulic fluid, a valve comprising a housing and an inlet passage which is connected to the delivery port of the pump and a first and a second outlet passage, which valve has an actuable shut-off member, so that in a first position thereof the delivery port is connected, via the first outlet passage, to the first connection of the tilting cylinder and in the second position thereof the delivery port is connected, via the second outlet passage, to the second connection of the tilting cylinder, wherein the valve also comprises hydraulic actuating means for actuating the shut-off member, the hydraulic actuating means comprising a body which is displaceable between an at-rest position and an actuated position and is accommodated in the housing, and an associated restoring assembly for restoring the body, the body including a through-passage, in such a manner that flow of hydraulic fluid from the pump through the inlet passage and through the through-passage to an outlet passage of the valve moves the body towards the actuated position, counter to the action of the restoring assembly, which hydraulic actuating means are further designed in such a manner that, as a result of the pump supplying hydraulic fluid to the inlet passage, the shut-off member is moved into the first position or into the second position, and as a result of this supply then being stopped or reduced and then being restored again, the shut-off member is moved into the second position or first position, respectively.