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A hydraulic control system for actuating a switch or related device including an actuator assembly having a housing with a member movable therein and connected to the switch for movement therewith between first and second positions responsive to the application of hydraulic pressure in the housing o

A hydraulic control system for actuating a switch or related device including an actuator assembly having a housing with a member movable therein and connected to the switch for movement therewith between first and second positions responsive to the application of hydraulic pressure in the housing on opposite sides of the movable member. The hydraulic control system includes a block member having inlet and outlet ports and passageways therebetween, the inlet port being connected to a source of hydraulic pressure, a plurality of control devices mounted on the block member and selectively energizable for establishing communication between the inlet port and a selected one of the outlet ports, the outlet ports being connected to the actuator housing to communicate with the housing on opposite sides of the movable member, and hydraulic pressure restrictor devices mounted on the block member at positions to predeterminately restrict hydraulic communication between the inlet port and the selected one of the outlet ports to control the speed of movement of the movable member in the actuator housing.

대표청구항 ▼

In a hydraulic switch actuated control apparatus having a hydraulic actuator assembly including a housing with a member movable therein between a first position and a second position in response to the application of hydraulic pressure into the actuator housing on opposite sides of the movable membe

In a hydraulic switch actuated control apparatus having a hydraulic actuator assembly including a housing with a member movable therein between a first position and a second position in response to the application of hydraulic pressure into the actuator housing on opposite sides of the movable member, said actuator housing having a first inlet for introducing hydraulic pressure therein to move the movable member from the first to the second position thereof and a second inlet for alternatively introducing hydraulic pressure therein to move the movable member from the second to the first position thereof, a source of hydraulic fluid under pressure and means for selectively applying pressure from said source to the first and second actuator housing inlets, the improvement comprising a one piece multi-sided block member having an inlet port in one face, a pair of outlet ports in another face and first and second separate sets of connecting passageways in said block member extending between the inlet and each outlet port of said pair, all of the passageways of said first and second sets extending into the block member and formed by passage portions extending substantially normal to respective block faces, means connecting the outlet ports of the pair to the respective first and second inlets to the hydraulic actuator assembly, the first set of connecting passageways in the block member including angularly related communicating passages including a first passageway extending into the block member in communication with the inlet port, communicating second and third passageways extending between and communicating the first passageway with one of the pair of outlet ports, solenoid operated valve means associated with the first passageway to control communication between the inlet port and said one outlet port, means associated with the second passageway adjustable to predeterminately limit communication between the inlet port and said one outlet port, the second set of connecting passageways in the block including angularly related communicating passages extending between the inlet port and the other of said outlet ports, said second set of passageways including a first passageway extending into the block in communication with the inlet port, and parallel connected second and third passageways in the block communicating the first passageway of said second set with the other outlet port, solenoid operated valve means associated with the first passageway of said second set to control communication between the inlet port and said other outlet port, means associated with said parallel second passageway of the second set adjustable to predeterminately limit communication between the inlet port and the other outlet port, the parallel connected third passageway in the block including associated solenoid operated valve means to control communication therethrough and other means in said parallel connected third passageway adjustable to predeterminately limit communication therethrough.