초록 ▼

A servo valve for controlling an actuator comprising a housing, a first slide movable in the housing for controlling the flow of fluid to and from the actuator and a second slide mounted for movement in the housing. Both of the slides are movable in the housing during normal operation of the servo v

A servo valve for controlling an actuator comprising a housing, a first slide movable in the housing for controlling the flow of fluid to and from the actuator and a second slide mounted for movement in the housing. Both of the slides are movable in the housing during normal operation of the servo valve. Each of the slides is movable in the housing when the other of the slides jams. A jam sensor responds to either of the slides jamming for providing a corrective function for the servo valve.

대표청구항 ▼

A control system for controlling the flow of fluid under pressure to a controllable device, said control system comprising: a housing having a supply port for receiving fluid under pressure and a return port for returning the fluid from the housing, said housing having first and second ports for sup

A control system for controlling the flow of fluid under pressure to a controllable device, said control system comprising: a housing having a supply port for receiving fluid under pressure and a return port for returning the fluid from the housing, said housing having first and second ports for supplying the fluid to the device and for receiving fluid from the device; first valve means mounted for movement in said housing and including a first slide movable for controlling the flow of fluid from the supply port to said first and second ports and from said first and second ports to said return port; a second slide mounted for movement in said housing; input means for moving both of said slides in said housing during normal operation of the control system; said input means including detent means responsive to the jamming of either of said slides for permitting the input means to drive the other of said slides; and jam responsive means for sensing the jamming of either of said slides and providing a signal in response thereto.