Abstract: This patent describes a three-phased reluctance motor (10) of stepper type with six coils placed in six slots (151-156) in a stator (5), n*6 teeth (7) in rotor (5) where n is an integer equal to or larger than 3, typically 8-16 and were the teeth (18) in stator (4) are shifted unsymmetrical so the motor (10) can produce torque at every angle between rotor (5) and stator (4).

Abstract: A self lock mechanism for rotating actuators, which allow rotation from one side while deny rotation from the other side, comprising sets of rollers arranged between a housing and a valve connection part, configured with a special shape to cause locking if the mechanism is attempted twisted from the valve side, a motor connection part to press rollers out of locking position and release the locking before the motor connection part makes contact with the valve connection part and start transferring torque. The rollers may be separated and kept in place by a wing on the valve connection part or by springs.

Abstract: This publication relates to a coil slot for 6 poled CVRM with 60 degrees angle between the centre of the slots. The slot have a shape so the two planes through centre of the first layer of coil wires wound into two adjacent slots are parallel and that the bottom of the slot has a length so all wires in the first layer touch each other and that the sides walls of the slot has an angle of 60 degrees to the bottom so there is one extra wire in each new wire layer and that the side walls go over to top walls which are perpendicular to the bottom of the slot and that the outer top wall is extended all the way to the centre of the slot where the chamber against the outer top wall for the next coil is smaller than the wire radius and that the inner top wall of two adjacent slots are collinear and that the extension of the inner top walls are outside the inner radius of the teeth and that the outer top walls are collinear.

Abstract: This patent describes a three-phased reluctance motor (10) of stepper type with six coils placed in six slots (151-156) in a stator (5), n*6 teeth (7) in rotor (5) where n is an integer equal to or larger than 3, typically 8-16 and were the teeth (18) in stator (4) are shifted unsymmetrical so the motor (10) can produce torque at every angle between rotor (5) and stator (4).