Class 310/156.44 - Different pole width

Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter wherein the physical dimensions of at least
No. of patents: 19
Last issue date: 05/15/2012

Number	Title	Issue Date
8179009	Rotor for an electric machine A rotor for an electrical machine includes a rotor hub and a plurality of permanent magnet segments affixed around a perimeter of the rotor hub. A first plurality of the permanent magnet segments have a substantially uniform arcuate span and are formed of a single u...	05/15/2012
7923879	Permanent magnet motor and washing machine provided therewith A permanent magnet motor includes a rotor and a plurality of permanent magnets located inside a rotor core. One or more of the permanent magnets having relatively smaller coercive forces have a first magnetic characteristic that when a magnetizing magnetic field is ...	04/12/2011
7385329	Electric machine for high magnetic reversal frequencies In electric machines, core losses limit, at high fundamental frequency, the permissible full-load power. The aim of the invention is to develop a design which enables a high power density at high magnetic reversal frequencies and which is easy to produce. To this en...	06/10/2008
7323835	Brushless DC motor actuator having remote commutation sensing apparatus A brushless DC motor and Hall Effect commutation sensors are mounted on a common circuit board, and ferromagnetic elements partially embedded in the motor stator in proximity to the periphery of the rotor magnetically couple the rotor magnet to the Hall Effect senso...	01/29/2008
7102263	Permanent magnet type rotor and permanent magnet type rotary electrical machine A number of embodiments of rotating electrical machines using permanent magnets wherein the cogging torque is substantially reduced as are vibrations caused by magnetic flux variations. This is accomplished by disposing the coil windings in equal circumferential spa...	09/05/2006
7095149	Magnetization pattern of rotor magnet for stepping motor A magnetization pattern of a rotor magnet for a stepping motor includes a plurality of magnetization portions, which is provided on the rotor magnet in a rotation direction of the rotor magnet. The magnetization portions have different magnetic poles which are alter...	08/22/2006
7084591	Electric drive control device, electric drive control method, and program of same An electric drive control device is provided with an electric machine having an asymmetrical salient pole, a current detecting portion, a phase converting device that converts the detected current into an axis current, and a current controlling device which generate...	08/01/2006
6933818	Torque motors A torque motor may include a rotor having at least two magnets disposed thereon, and a stator having a core and at least one coil. The magnets are arranged and constructed so that the outer surfaces thereof alternately have a N pole and a S pole. The magnets cover t...	08/23/2005
6891295	Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w...	05/10/2005
6867524	Rotor skew methods for permanent magnet motors A permanent magnet motor to reduce torque ripple includes a rotor having at least three segments. Each of the three segments is formed sequentially adjacent and aligned along an axis of the rotor. Each segment has at least one pair of permanent magnets disposed at a...	03/15/2005
6858960	Low cogging permanent magnet motor The present invention minimizes variations in torque due to cogging in a permanent magnet brushless electric motor and, among other things, specifies a topology of a rotor and a stator in relation to one another. According to one embodiment, a permanent magnetic mot...	02/22/2005
6717324	Magnet motor device The present invention relates generally to a magnet motor, and having being provided the driven power of the electromagnet motor for electric vehicles, wherein, it has provided with a wireless coil whole rotator, which the upper part has been constructed with an equ...	04/06/2004
6628031	Harmonic-frequency synchronous machine with flux concentration An electric synchronous machine with improved torque characteristic has a stator and a rotor, wherein the stator includes a winding, preferably a three-phase AC winding, with an average coil width ͌sp. The rotor is provided with permanent magnets and has...	09/30/2003
5705871	Pulse generator having index angles formed by permanent magnet rotor A pulse generator includes a rotor assembly which is formed by circularly arranged magnetic poles, and a stator assembly which is disposed coaxial with the rotor assembly and is formed by stator coils arranged circularly. Index angles defined by the circu...	01/06/1998
5396137	Brushless motor In a brushless motor having a stator with windings mounted in plural slots and a rotor with a permanent magnet consisting of plural poles, the poles have two kinds of occupation angles on the whole in the rotating direction of the rotor, and a difference ...	03/07/1995
5107159	Brushless DC motor assembly with asymmetrical poles A two phase unipolar brushless direct current motor with asymmetrically arranged pole positions including a rotor portion (12) mounted upon a shaft subassembly (14) and rotating therewith with respect to a stator portion (16). The rotor portion (12) inclu...	04/21/1992
4739203	Single-phase brushless motor with cogging features A single-phase brushless motor which can rotate smoothly by a uniform torque over an entire range of rotation with reduced torque ripples, without generating a high cogging torque for allowing self-starting of the motor. The motor comprises a field magnet...	04/19/1988
4217508	DC motor A DC motor having a rotor which rotates about an axis and a stator. The motor comprises at least two coils adapted to be energized for current to flow therethrough, each coil having a first current path portion through which current flows in a first direc...	08/12/1980
3969644	Pulse generator with asymmetrical multi-pole magnet A pulse generator is comprised of an asymmetrical magnet assembly and a Hall sensor operative for generating an electrical signal upon the application of a magnetic field thereto. The Hall sensor and magnet assembly are mounted for relative movement for t...	07/13/1976

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Class 310/156.44 - Different pole width