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| Number | Title | Issue Date |
| 7598649 | Vertical stator double gas D.C. PM motors A vertical stator d.c. PM motor employs outer and inner working air gaps wherein the length of the inner working gap at any stator pole is greater than the corresponding length at the outer working gap. A mutual cancellation of detent torque between the outer and in... | 10/06/2009 |
| 7166948 | Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor A multi-phase unipolar motor is configured such that each stator pole is formed with bifilar wound primary and inductively associated secondary windings corresponding with one phase. The primary winding at one stator pole corresponding with one phase is coupled with... | 01/23/2007 |
| 7026773 | Multiphase motors with single point sensing based commutation System, method and apparatus for commutating a multiphase motor utilizing a single sensor. Commutation is carried out by employing a sensible system which incorporates phase commutating transition attributes. A motor is started by assigning a starting phase for a gi... | 04/11/2006 |
| 7005764 | Electrodynamic apparatus and method of manufacture Electrodynamic apparatus such as a motor, generator or alternator is configured having a stator core assembly formed of pressure shaped processed ferromagnetic particles which are pressure molded in the form of stator modules. These generally identical stator module... | 02/28/2006 |
| 6891343 | Multiphase motors with single point sensing based commutation System, method and apparatus for commutating a multiphase motor utilizing a single sensor. Commutation is carried out by employing a sensible system which incorporates phase commutating transition attributes. A motor is started by assigning a starting phase for a gi... | 05/10/2005 |
| 6798111 | Plastic encapsulated electrodynamic apparatus Method and apparatus for forming an electrodynamic device such as a motor or generator. The device is formed with an encapsulation structure which is developed by insert molding. A rigid pressed powder stator core and stator backiron subassembly with associated stat... | 09/28/2004 |
| 6707224 | PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles A d.c. PM motor and corresponding generator having a stator core assembly which is formed of a pressure-shaped processed ferromagnetic particulate material. The spaced apart isotropic core components of the stator core assembly are generally disposed in parallel rel... | 03/16/2004 |
| 6617747 | PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles A d.c. PM motor and corresponding generator having a stator core assembly which is formed of a pressure-shaped processed ferromagnetic particulate material. The spaced apart isotropic core components of the stator core assembly are generally disposed in p... | 09/09/2003 |
| 6441530 | D.C. PM motor with a stator core assembly formed of pressure shaped processed ferromagnetic particles A d.c. PM motor having a stator core assembly which is formed of a pressure shaped processed ferromagnetic particulate material. The low permeability characteristic of this material is accommodated for by a stator shape which optimizes the efficiency of t... | 08/27/2002 |
