Abstract: A bearing assembly for a motor shaft of an electric motor having a stator. The stator is formed by a stator core having a plurality of stator laminations, which are stacked one on the other. The stator core has a first outer partial stator core, a second outer partial stator core, and a central partial stator core. The central partial stator core is arranged between the two outer partial stator cores. A continuous opening is arranged in each of the partial stator cores, in which openings bearings for supporting the motor shaft are arranged and the motor shaft is arranged. A diameter of the opening of the central partial stator core is smaller than a diameter of the opening of the outer partial stator cores such that a diameter transition from the central partial stator core to an outer partial stator core forms an axial stop for a bearing.

Abstract: Induction motor capable of being housed in a tubular actuator and method of assembling this motor. This motor (1) comprises: (i) a stator (2), (ii) a rotor assembly, (iii) a bowl (9) capable of protecting a bundle formed at one end (7) of the stator (2), the bowl (9) comprising an internal skirt (13), (iv) means of supporting the rotor assembly allowing the rotor assembly to rotate with respect to the stator (2), the support means comprising a bearing (21) positioned inside the internal skirt (13), the bearing (21) comprising a region that rests twice, axially and radially, against the stator (2).

Abstract: An external cylindrical ring for use in this rotating electric machine includes a body portion and a flange, the body portion including a fastening region making internal contact with an outer circumferential surface of a stator core to be fastened to the outer circumferential surface of the stator core, and a skirt region located at a bottom surface side of a casing and having an inner diameter larger than an inner diameter of the fastening region. When the external cylindrical ring is fastened to the stator core, the deformation of the skirt region of the external cylindrical ring can be suppressed, thus enabling the dimensional accuracy of an outer surface of a cylindrical skirt region of the external cylindrical ring to fall within tolerance.

Abstract: An electric apparatus with high performance and high rigidity is provided. Annular positioning stepped portions are formed at respective outer peripheral corner portions of both end portions of a stator core to extend entirely circumferentially of the stator core. An annular positioning projecting portion is formed at a first end bracket to be entirely fitted with one of the annular positioning stepped portions of the stator core. An annular positioning projecting portion is formed at a second end bracket to be entirely fitted with the other annular positioning stepped portion of the stator core.

Abstract: A permanent magnet motor has a stator and a rotor rotatably mounted to the stator. The stator has a housing with n side portions and n connecting portions distributed alternately, wherein n is a integer equal to or greater than 3. Adjacent side portions are interconnected by one of the connecting portions. The radial cross section of each side portion is a convex curved line which is curved outwardly relative to a straight line passing through the two ends of the convex curve line. Permanent magnets are fixed to an inner surface of the housing. An end cap fixed to one end of the housing, has a bottom and n side walls extending from the bottom. A flat mounting surface is formed at the outer surface of a first one of the side walls.

Abstract: In the base bracket of the motor, the bottom-inner surface of the base bracket includes a first bottom-inner area arranged over a circuit board attaching portion of a bottom-outer surface to which the circuit board is attached, and a second bottom-inner area arranged other than the first bottom-inner area in a level axially lower than the first bottom-inner area. The second bottom-inner area defines a base of the concave portion arranged in the bottom-inner surface of the base bracket. A characteristic frequency of the disk storage device using the motor with the base bracket is preferably adjustable by changing the depth or width of the concave portion while the strength of the base bracket is preferably maintained.

Abstract: In the base bracket of the motor, the bottom-inner surface of the base bracket includes a first bottom-inner area arranged over a circuit board attaching portion of a bottom-outer surface to which the circuit board is attached, and a second bottom-inner area arranged other than the first bottom-inner area in a level axially lower than the first bottom-inner area. The second bottom-inner area defines a base of the concave portion arranged in the bottom-inner surface of the base bracket. A characteristic frequency of the disk storage device using the motor with the base bracket is preferably adjustable by changing the depth or width of the concave portion while the strength of the base bracket is preferably maintained.

Abstract: A miniature fan motor assembly comprises a housing base provided with a base plate and a tubular post on the base plate for engaging a cylinder so as to support a rotor along its axis. The base plate combines with a circuit board on which a coil winding and a silicon steel sheet are secured to each other by an adhesive. The rotor is started by a magnetic field generated by a magnet and the coil winding.

Abstract: A remote controllable television viewing support including a rigid base; a rigid platform positioned above of the base and having a substantially horizontal longitudinal axis, a substantially vertical central axis, and a size for supporting a television thereon; an electrical motor mechanism coupled to the platform for allowing the platform to rotate about its longitudinal axis, thereby causing a supported television to tilt, and for allowing the platform to rotate about its central axis, thereby causing a supported television to swivel; a power supply mechanism for providing electrical energy to the motor mechanism; an infrared signal detecting and switching mechanism coupled to the power source mechanism and the motor mechanism for energizing the motor mechanism for selective rotation of the platform based upon detection of an infrared signal; and a hand-held and manually-operated remote control mechanism positionable at a location remote from the infrared detecting and switching mechanism for selectively r

Abstract: A motor cooling fan housing for a by-pass vacuum motor is presented. The fan housing includes a top plate connected to a cylindrical side portion. The top plate is characterized by a plurality of uniformly spaced tear-drop shaped slots therein. The slots provide for the entry of cooling air to the motor maintained therein. The slots are elongated and have a major axis which is non-collinear with the center point of the top plate of the housing.