Abstract: An actuator device comprising an actuator housing with a fitting for connecting the actuator to an object, a motor, which via transmission elements, drives an output actuator shaft of the actuator, where the actuator shaft is rotationally disconnectable from the motor, the actuator shaft being rotatable between two angular positions where the one angular position may correspond to the object being in a first condition and the other angular position may correspond to the object being in a second condition, and where the actuator is provided with an element for storage of mechanical energy, the element by energy cut-off to the actuator being releasably arranged to be able to displace a nut being prevented from rotating around its longitudinal axis, along a screw thread complementary fitting to the nut, and connected to the actuator shaft, whereby the actuator shaft is rotated between the two angular positions.

Abstract: An actuator device (1) comprising an actuator housing (2), a driving motor (4) attached to the actuator housing (2), which driving motor (4) is provided with a motor spindle (28), the motor spindle (28) being displaceably engaged with an actuator spindle (6) via a nut (38), and where an auxiliary frame (8) which can be displaced relative to the actuator spindle (6) and biased by use of the driving motor (4), and which can be releasably coupled to the actuator housing (2), is arranged to displace the actuator spindle (6) independently of the motor (4), and where the nut (38) is releasable coupled to the actuator spindle (6), thereby being arranged to bias the auxiliary frame (8) while disengaged from the actuator spindle (6).