| Patents for H02K 31 - Acyclic motors or generators, i.e. dc machines having a drum or disc armature with continuous current collectors (397) |
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| 07/05/2007 | US20070152533 Two-Stage Eutectic Metal Brushes |
| 06/21/2007 | WO2007070806A2 Dc homopolar motor/generator |
| 06/14/2007 | US20070132331 DC homopolar motor/generator |
| 05/31/2007 | US20070120435 Electromechanical device having three-dimensional stator laminations |
| 04/19/2007 | US20070085427 Superconducting homopolar inductor alternator for power applications |
| 03/22/2007 | US20070063609 Single field rotor motor |
| 03/06/2007 | CA2440537C Fuel cell powered magnetically driven shaft assembly |
| 02/27/2007 | US7183731 Pulse generating method and pulse generator, and motor control system using the same |
| 02/08/2007 | US20070029891 Alternator with removable brush block and method of changing brushes in an alternator |
| 02/07/2007 | CN1909342A No-inductance direct current motor specially for electric bicycle and its body and electrical control system |
| 02/01/2007 | US20070024144 Disk alternator |
| 02/01/2007 | US20070024127 Driving apparatus |
| 01/30/2007 | US7170243 Drive method for brushless motor and drive control apparatus therefor |
| 01/25/2007 | US20070018524 Electric machine and method of using electric machine |
| 01/18/2007 | US20070013251 PDC motor-generator |
| 12/14/2006 | US20060279165 Alternator rotor core |
| 12/12/2006 | US7148600 Electrical current transferring and brush pressure exerting interlocking slip ring assembly |
| 11/28/2006 | US7141943 Brushless DC motor system and method of controlling the same |
| 11/23/2006 | US20060261698 Stator of outer rotor type motor for drum type washing machine |
| 10/10/2006 | US7119508 Drive control device for direct current motor, rotation drive system for direct current motor and semiconductor integrated circuit for driving coil |
| 10/03/2006 | US7116068 Diagnostic system and method for an electric motor using torque estimates |
| 09/19/2006 | US7109672 Brushless motor control device and disc apparatus using the same |
| 09/12/2006 | US7105972 Controller and magnetically driven wheel for use in a radial/rotary propulsion system |
| 08/16/2006 | EP1397854B1 Fuel cell powered magnetically driven shaft assembly |
| 07/13/2006 | US20060152182 Detector circuit to be used for measuring current |
| 05/26/2006 | WO2006054973A1 Orbiting multi-rotor homopolar system |
| 05/25/2006 | US20060108888 Rotor for line-start reluctance motor |
| 05/23/2006 | US7049724 Superconducting rotating machines with stationary field coils and axial airgap flux |
| 04/27/2006 | US20060087187 Multivariable generator and method of using the same |
| 04/11/2006 | US7026738 Quad shaft contrarotating homopolar motor |
| 03/09/2006 | US20060049711 Homopolar multi-frames (cylinders) generator-motor |
| 02/09/2006 | US20060028085 Superconducting rotating machines with stationary field coils |
| 01/25/2006 | CN1726629A Rotor for line-start reluctance motor |
| 12/29/2005 | US20050285472 Alternator with removable brush block, method of changing brushes in an alternator, alternator with replaceable resistor, and method of changing the maximum output current of an alternator |
| 12/29/2005 | DE102004027534A1 Windkraftanlage Wind Turbine |
| 12/15/2005 | WO2005119857A1 Current transfer device for a wind power station |
| 12/15/2005 | DE202005013300U1 Unipolar electrical machine for use as DC motor, has rotor whose active part is provided with stellar shaped cross section so that coil is induced by induction fluctuations in gap between rotor and stator to induce pulsating voltage |
| 11/16/2005 | EP1573886A4 Multipolar machines |
| 11/16/2005 | EP1535385A4 Current collector systems for multipolar machines |
| 10/05/2005 | CN2731826Y Single-pole d.c. dynamo |
| 09/14/2005 | EP1573886A2 Multipolar machines |
| 09/08/2005 | US20050194862 Superconducting rotating machines with stationary field coils and axial airgap flux |
| 09/01/2005 | US20050189837 Stator of outer rotor type motor for drum type washing machine |
| 07/21/2005 | DE10360548A1 Schleifringanordnung Slip ring assembly |
| 07/07/2005 | WO2005062432A1 Slip-ring arrangement |
| 06/30/2005 | WO2004006304A3 Multipolar machines |
| 06/01/2005 | EP1535385A2 Current collector systems for multipolar machines |
| 05/25/2005 | CN1619926A Rotary direct current homopolar electric machine |
| 05/11/2005 | CN2699574Y Single phase and pole direct-driving type brushless DC motor without commutation |
| 04/21/2005 | WO2004102769A3 Homopolar machine with shaft axial thrust compensation for reduced thrust bearing wear and noise |
| 04/14/2005 | US20050077796 System for initiating and maintaining superconductivity in an electrical generator coil |
| 04/14/2005 | US20050077795 Homopolar machine with improved brush lifetime |
| 04/07/2005 | US20050073206 Bipolar machine |
| 03/29/2005 | US6873078 Homopolar machine with improved brush lifetime |
| 03/08/2005 | US6863943 Semiconducting oxide nanostructures |
| 02/15/2005 | US6856062 Homopolar machine with shaft axial thrust compensation for reduced thrust bearing wear and noise |
| 01/26/2005 | CN1571253A A DC brushless motor |
| 01/26/2005 | CN1571250A Birotor DC brushless motor |
| 12/29/2004 | CN1182645C DC electric generator without commutator |
| 12/21/2004 | US6833645 Micro-electromechanical voltage converter |
| 11/25/2004 | WO2004102769A2 Homopolar machine with shaft axial thrust compensation for reduced thrust bearing wear and noise |
| 11/23/2004 | US6822361 Orbiting multi-rotor homopolar system |
| 11/02/2004 | CA2196669C Fuel cell powered propulsion system |
| 10/07/2004 | US20040194290 System for manufacture and use of a superconductive coil |
| 10/05/2004 | US6799363 System for manufacture and use of a superconductive coil |
| 09/23/2004 | US20040185251 Semiconducting oxide nanostructures |
| 09/16/2004 | WO2004054068A3 Rotor for line-start reluctance motor |
| 08/03/2004 | US6770997 Micro-electromechanical energy storage device |
| 07/29/2004 | US20040145265 Homopolar machine with shaft axial thrust compensation for reduced thrust bearing wear and noise |
| 07/15/2004 | WO2004006358A3 Current collector systems for multipolar machines |
| 06/29/2004 | US6756708 Electronic circuit incorporating a micro-electromechanical energy storage device |
| 06/24/2004 | WO2004054068A2 Rotor for line-start reluctance motor |
| 06/02/2004 | EP0779866B1 Fuel cell powered propulsion system |
| 05/20/2004 | US20040095031 Micro-electromechanical voltage converter |
| 04/29/2004 | DE10101785B4 Unipolar-Maschine Unipolar motor |
| 04/01/2004 | WO2003083174A3 Electrolytic device using a mechanical energy source |
| 03/17/2004 | EP1397854A2 Fuel cell powered magnetically driven shaft assembly |
| 03/11/2004 | US20040046473 Micro-electromechanical energy storage device |
| 03/04/2004 | US20040041488 Electronic circuit incorporating a micro-electromechanical energy storage device |
| 02/12/2004 | US20040027022 Weir dynamos and dynamo-motors |
| 02/05/2004 | US20040021387 Homopolar generator |
| 01/15/2004 | WO2004006358A2 Current collector systems for multipolar machines |
| 01/15/2004 | WO2004006304A2 Multipolar machines |
| 12/16/2003 | US6664693 Fuel cell powered electrical motor |
| 10/09/2003 | WO2003083174A2 Electrolytic device using a mechanical energy source |
| 09/30/2003 | US6628033 Reduction of induced magnetic forces on current collectors in homopolar machines having high magnetic fields |
| 09/09/2003 | US6617738 Electrical power generation system utilizing an electrically superconductive coil |
| 08/05/2003 | US6603233 Electrical generator |
| 07/17/2003 | WO2002099959A3 Electrical power generation system |
| 06/19/2003 | US20030111925 Electrical generator |
| 06/17/2003 | US6580191 Fuel cell powered magnetically driven shaft assembly |
| 03/20/2003 | US20030052564 Bipolar machines-a new class of homopolar motor/generator |
| 03/06/2003 | WO2002099959A8 Electrical power generation system |
| 02/26/2003 | CN1399400A DC dual-purpose electric generator without commutator |
| 02/13/2003 | WO2002075895A3 Homolar electric dc- motors/ -generators |
| 02/06/2003 | WO2002097951A3 Fuel cell powered magnetically driven shaft assembly |
| 02/06/2003 | US20030025420 Electron turbine |
| 12/12/2002 | WO2002099959A2 Electrical power generation system |
| 12/05/2002 | WO2002097951A2 Fuel cell powered magnetically driven shaft assembly |
| 12/05/2002 | US20020180298 Fuel cell powered magnetically driven shaft assembly |