Hydraulic system for operating switching or like devices

Means including a block member for hydraulically operating a switching device having first and second operating positions, the hydraulic system including a hydraulic actuator having a chamber for hydraulic fluid and a member operatively connected to the switching device and movable in the chamber between the first position corresponding to the first position of the switching device and a second position corresponding to the second position of the switching device, said movable member dividing the chamber into separate chamber portions on opposite sides thereof, said actuator having a first inlet communicating with the chamber on one side of the movable member and a second inlet communicating with the chamber on the opposite side of the movable member,

• the improvements 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 respectively to the first and second inlets of the hydraulic actuator,
• the first set of connecting passageways in the block including angularly related communicating passages including a first passageway extending into the block 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.

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.

A one piece multi-sided block 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 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 and formed by passage portions extending substantially normal to respective block faces,

• the first set of connecting passageways in the block including angularly related communicating passages including a first passageway extending into the block 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.