초록 ▼

The device comprises a housing having therein a valve chamber, fluid inlet and exhaust ports opening on opposite ends, respectively, of the chamber, and an outlet port for connection to fluid pressure operated apparatus. Two solenoid coils are wound in the housing to surround said chamber and two ar

The device comprises a housing having therein a valve chamber, fluid inlet and exhaust ports opening on opposite ends, respectively, of the chamber, and an outlet port for connection to fluid pressure operated apparatus. Two solenoid coils are wound in the housing to surround said chamber and two armatures which are mounted in the chamber to reciprocate independently of each between said inlet and exhaust ports. Two springs normally urge said armatures to first limit positions in which a valve on one armature closes the exhaust port, and a valve on the other armature opens the inlet port to place it in communication with the outlet port. When both solenoid coils are energized the armatures shift in the same direction to close the inlet port and open the exhaust port to exhaust fluid from the outlet port to a sump. One coil alone may be energized to shift one armature to close the inlet port without causing the other armature to shift, thus maintaining the exhaust port closed.

대표청구항 ▼

A solenoid actuated three-way three-position valve, comprising a housing having therein an inlet port disposed to be connected to a supply of fluid under pressure, an outlet port disposed to be connected to a fluid pressure operated system, and an exhaust port disposed to be connected to a sump, a f

A solenoid actuated three-way three-position valve, comprising a housing having therein an inlet port disposed to be connected to a supply of fluid under pressure, an outlet port disposed to be connected to a fluid pressure operated system, and an exhaust port disposed to be connected to a sump, a first valve mounted in a bore in said housing for movement between an open position to place said inlet and outlet ports in communication with each other, and a closed position to interrupt communication between said inlet and outlet ports, a second valve mounted in said bore in said housing for movement between an open position to place said outlet and exhaust ports in communication with each other, and a closed position to interrupt communication between said outlet and exhaust ports, means normally urging each of said valves in the same direction from one to the other of its open and closed positions, respectively, and electromagnetic means in said housing operable to move each of said valves selectively, and independently of one another, from said other position to said one position thereof, said electromagnetic means including a pair of selectively energizable solenoid coils mounted in said housing to surround said bore, one of said coils being wound coaxially within the other of said coils, and each of said coils being operative upon being energized to move one of said first and second valves from said other position to said one position thereof.