Abstract: A driving device for an electric lock latch, comprises a housing, a motor having a power output shaft connected to a drive shaft with an external thread on a part thereof, an unequal diameter coil spring having a cylindrical spiral in the middle thereof screwing with the drive shaft, and a first and second conical spiral on both end thereof not screwing with the drive shaft, and a lock latch secured to the second conical spiral. The drive shaft is driven and rotated by a motor to pass the rotation power to the cylindrical spiral, and a rotary motion of the drive shaft is converted into a linear motion of the unequal diameter coil spring for moving the lock latch to change the locked and unlocked state of the lock device. Accordingly, the lock structure and the installation thereof may be simplified and the power-saving effect is achieved.

Abstract: An actuator arrangement comprises a plurality of linearly extendable actuators arranged to be driven by a common electrically driven motor, each actuator, being provided with limit stops to limit extension and/or retraction thereof, wherein the limit stops of the actuators are positioned such that a first one of the actuators has a smaller range of permitted extension than at least a second one of the actuators.

Abstract: The present invention discloses a dual directional power feed for use with handheld drills or stationary frame mounted power sources. The device comprises a housing, two pairs of wheel bearings rotatably mounted to the housing, a cap rotatably mounted to the housing, and a biasing bearing rotatably mounted to the cap. The cap is rotatable to a first position such that rotation of the threaded cable in a first direction causes the threaded cable to translate along its longitudinal axis in a first direction. The cap is further rotatable to a second position such that rotation of the threaded cable in the first direction causes the threaded cable to translate along its longitudinal axis in a second direction, opposite the first direction. Further, the present invention discloses a bearing and support assembly for coupling a power feed device to a power unit comprising a support plate and a bearing.

Abstract: An apparatus for producing linear motion from rotary motion is disclosed comprising a drive rod (10) of circular cross section which is arranged to be rotated at a constant speed in the same direction. A carriage (11) which is arranged to be mounted on the rod for axial movement along the length thereof is provided with at least one roller member (12a, 12b) arranged to engage the rod at an angle to the axis of rotation of the rod. The rotary motion of the red then causes the roller member to rotate, thereby generating an axial rector component in a direction along the rod, thus causing the carriage to move in a linear direction along the rod.