A valve actuator having an electric drive motor with a motor shaft and having an output shaft linked to the motor shaft to drive movement of a valve, the actuator further having a control system arranged to provide a first closed loop control of the actuator output shaft and including a controller coupled to a first...

Apparatus (100) adapted to provide an indication of an angular position of an input member (106) over multiple turns includes at least two rotatable members (104A 104D) configured in use to rotate in accordance with rotation of an input member (106) and at least one sensing device (114A) configured to measure and ou...

A valve actuator torque limiter (103) includes a moveable shaft (208) moveable two ways in an axial direction and in use rotatable to cause rotation of a valve actuator drive shaft (202). The limiter further includes a brake disc (214) mounted on the moveable shaft; a first friction device (216A) located to a first ...

The present invention describes a motor driven actuator device comprising an actuator motor; a control module; an input for receiving an external power supply; and a battery pack. The battery pack is electrically connected to selectively drive the actuator motor, and is electrically connectable to the external power...

The present invention describes a motor-driven actuator device comprising an enclosure (1 ) in which a motor, control module (3) and a drive (4) are housed. The drive (4) is coupled between a motor and a device being actuated. The device further comprises an input for receiving a renewable or harvested energy power ...

An actuator (1) comprising a motor (2) assembly, a drive coupling (113, 13, 313) assembly and an actuator shaft (114, 14). The motor (2) assembly comprising a motor housing (120, 20), having a cover (122, 22) and a base (123, 23); an electric motor (111, 11, 211, 2), comprising an external stator (111, 11, 211) and ...

A failsafe module comprising an input member (310), an output member (312), and a coupling mechanism for coupling the input member to the output member. The coupling mechanism comprises an intermediate member (316a) movable relative to the output member to energise an energy storage device and a latch mechanism (318...

The present invention describes a motor driven industrial actuator device comprising an enclosure (1) in which a motor, a control module (3) and a drive (4) are housed. The drive (4) is coupled between a motor and an external device being actuated. The device further comprises an input for receiving an external powe...

An actuator for a flow control valve comprises an electric motor (112) for driving an output shaft connected to the valve; an electric power supply (128) having a characteristic feature for defining an intended direction of drive of the electric motor; a sensor (132) for detecting the characteristic feature; a conne...