Abstract: An electric machinery provided with a PM magnetic pole wrapped by a permeable polar face and a magnetic circuit from an individual magnetic pole provides an innovative design of having disposed the PM magnetic pole wrapped between the permeable polar face and the magnetic circuit from the individual magnetic pole to prevent PM magnetic pole from falling off and avoid PM magnetic pole magnetic force from being weakened by inverse excitation during the operation.

Abstract: A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %.

Abstract: Described is a direct current motor (1) with permanent magnet stator, having at least four stator poles (5, 6, 7, 8) which are spaced at equal angular intervals about the rotation axis (A) of the rotor (3) and which generate a magnetic field that is asymmetrical about the rotation axis (A) of the rotor (3) and where the rotor winding (4) can be powered partially and selectively at least at two fixed, explementary angular sectors.

Abstract: A dynamoelectric machine comprising a stator having a plurality of slots and teeth, armature windings wound around the teeth, and a rotor disposed inside the stator, wherein an alloy member is disposed in the inner periphery of the stator and the magnetic compensator has its surface or inside thereof a high resistance layer.

Abstract: A permanent magnet design includes a magnetic field that is skewed relative to a center line of the magnet body. One surface of the magnet is adapted to be mounted or supported on a motor assembly component such as the rotor. The other side of the magnet body includes at least one surface that is not aligned with the center line of the magnet body. When the magnet is supported on a motor component so that the magnet center line is aligned with the axis of rotation of the motor rotor, the magnetic field of the magnet is not aligned with the rotor axis.

Abstract: In an electromagnetic actuator wherein a rotatable rotor and at least one magnetomotive force source are integrally incorporated through a magnetic path, magnets 5-1 and 5-2 magnetized with opposite polarities are provided on a part of the peripheral surface of the rotor 4. Three pole pieces 12, 13 and 14 are provided on the peripheral edge of an opening in which the rotor 4 is provided. Connecting paths 15, 16 and 18 are provided for each pair of adjacent pole pieces.