Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02K - Dynamo-electric machines › H02K 31 - Acyclic motors or generators, i.e. dc machines having a drum or disc armature with continuous current collectors
Patents for H02K 31 - Acyclic motors or generators, i.e. dc machines having a drum or disc armature with continuous current collectors (397)
12/2002
12/05/2002US20020180283 Electrical power generation system
12/03/2002US6489700 Homopolar machine with shaft axial thrust compensation for reduced thrust bearing wear and noise
11/2002
11/19/2002US6483219 Electric motor
11/14/2002WO2002091550A1 Bipolar machines a new class of homopolar motor/generator
09/2002
09/26/2002WO2002075895A2 Homolar electric dc- motors/ -generators
09/26/2002US20020135256 Electric motor
08/2002
08/14/2002EP1231703A2 Unipolar machine
07/2002
07/25/2002DE10101785A1 Unipolar machine has coaxial rotating pair of unipolar magnets with cylindrical air gap containing static armature conductors parallel to longitudinal axis, distributed on air gap periphery
06/2002
06/20/2002US20020074888 Fuel cell powered electrical motor
06/19/2002CA2329058A1 Fuel cell powered electrical motor
11/2001
11/07/2001CN1320998A Constant DC electric generator
07/2001
07/19/2001DE10063230A1 Floating rotor homopolar machine has two reaction bodies symmetrical to rotor floats as large volume structures that fulfill symmetry condition; coil core forms rotor current return line
06/2001
06/28/2001DE19957008A1 Electric machine has hollow armature with at least one individual layer of one or more metals and has 'open' Fermi-surface to maximise interaction between magnetic field and electric current
06/20/2001CN1300128A Magnetic brushless permanent-magnet DC motor-generator with outer rotor
03/2001
03/14/2001CN1287401A Cylindrical monopolar DC motor
01/2001
01/24/2001CN1281285A Disk-type acyclic DC motor
11/2000
11/30/2000DE19901201C2 Unipolarmaschine mit einem Kugellager Homopolar generator with a ball bearing
10/2000
10/19/2000DE19916243A1 Vorrichtung zur Energieumwandlung mit mindestens einer Brennstoffzelle und/oder einem Hydrolyseur An apparatus for energy conversion comprising at least one fuel cell and / or a Hydrolyseur
10/18/2000CN1270437A Stabilized constant-voltage DC generator with magnetic monopolar body
10/11/2000EP1043792A2 Device for converting energy with at least one fuel cell and/or one hydrolyser
08/2000
08/17/2000DE19901201A1 Ball bearing machine for use as motor or generator has rotatable bearing shell operating as unipolar machine, and bearing ball for driving shell or rotor against contact points
04/2000
04/11/2000US6049150 Flywheel with electrically controlled input and output
04/11/2000CA2059579C High power electrical machinery
02/2000
02/29/2000CA2059085C High power electrical machinery with toroidal permanent magnets
12/1999
12/21/1999US6005322 Integrated fuel cell electric motor
11/1999
11/16/1999CA2094078C Direct current homopolar machine
11/02/1999US5977684 Rotating machine configurable as true DC generator or motor
07/1999
07/13/1999US5923106 Integrated fuel cell electric motor with static fuel cell and rotating magnets
05/1999
05/25/1999US5907455 Distributed spindle motor integrated with disc
03/1999
03/11/1999WO1999012250A1 Homopolar machine
12/1998
12/01/1998US5844345 Homopolar motor with dual rotors
10/1998
10/14/1998CN1195918A Acyclic dc electric machine
10/13/1998US5821659 Homopolar transformer for conversion of electrical energy
09/1998
09/23/1998CN1193841A Magnetic power apparatus
04/1998
04/01/1998CN1177855A D. C. electric motor without commuator
01/1998
01/15/1998WO1998001936A1 Brushless electromagnetic motor-generator
10/1997
10/21/1997US5678647 Fuel cell powered propulsion system
08/1997
08/06/1997EP0428652B1 Process and device for marine propulsion
06/1997
06/25/1997EP0779866A1 Fuel cell powered propulsion system
02/1997
02/20/1997DE19632818A1 Rotor coil for homopolar dynamoelectric rotary machines
12/1996
12/24/1996US5587618 Direct current homopolar machine
06/1996
06/25/1996US5530309 Homopolar machine
03/1996
03/14/1996WO1996007560A1 Fuel cell powered propulsion system
01/1996
01/17/1996CN1115131A Single-electrode a.c./D.C. universal electrical machinery
01/02/1996US5481149 Homopolar dynamoelectric machine
09/1995
09/19/1995US5451825 Voltage homopolar machine
07/1995
07/27/1995WO1995020251A1 Liquid metal electrical contact compositions and methods of using same
07/27/1995CA2166384A1 Liquid metal electrical contact compositions and methods of using same
07/18/1995US5434462 High-power electrical machinery
07/13/1995WO1995019063A1 Rotor slip ring assembly for a homopolar generator
07/12/1995CN1105160A Rotor slip ring assembly for a homopolar generator
06/1995
06/20/1995US5426338 High-power electrical machinery with toroidal permanent magnets
05/1995
05/17/1995EP0653829A1 Homopolar dynamoelectric machine
03/1995
03/23/1995WO1995008210A1 A homopolar generator
10/1994
10/04/1994US5352139 Method and apparatus for the propulsion of water vehicles
05/1994
05/31/1994US5317228 High-power electrical machinery with toroidal permanent magnets
05/03/1994US5309055 High-power electrical machinery
01/1994
01/25/1994US5281364 Liquid metal electrical contact compositions
01/11/1994US5278470 Homopolar machine which acts as a direct current (DC) high voltage generator or motor
08/1993
08/31/1993US5241232 Homopolar motor-generator
05/1993
05/19/1993CN1072296A Radiation pole type d. c. electric machine
05/04/1993CA1317330C Seal
01/1993
01/07/1993DE4122043A1 Efficient magnetoelectric induction method for motor and generator modes - arranging magnetic poles to provide continuous flux field lines and current flow path
10/1992
10/07/1992EP0507726A1 Superconducting brushless homopolar motor with multiple winding rotor
10/04/1992CA2064982A1 Apparatus and method for aligning stacked laminations of a dynamoelectric machine
09/1992
09/01/1992US5144179 Superconducting brushless homopolar motor with multiple winding rotor
08/1992
08/26/1992EP0211035B1 Energy density homopolar generator
08/26/1992CN2114238U Homopolar generator
07/1992
07/01/1992CN1062436A Dc motor
03/1992
03/19/1992DE4029135A1 Rotary commutatorless electric motor with partly shielded rotor - has disc or cylindrical sleeve which screens rotor winding intersected by stator field symmetrically w.r.t. axis
02/1992
02/26/1992CN2097470U Dc generator
02/12/1992CN2096158U Dc motor
11/1991
11/26/1991US5068561 Homopolar rotary machine with flux bypass
11/05/1991USH994 Transposed air core homopolar generator conductors
09/1991
09/17/1991US5049771 Electrical machine
07/1991
07/16/1991US5032752 Anisotropic resistivity material and method of making same
07/16/1991US5032748 Superconducting DC machine
07/03/1991EP0434682A1 Unipolar motor and mechanical conversion system and method
06/1991
06/26/1991CN1052579A Dc motor without commutator
05/1991
05/29/1991EP0428652A1 Process and device for marine propulsion.
04/1991
04/23/1991CA1283439C Liquid metal collector for acyclic generator
12/1990
12/04/1990US4975609 Homopolar dynamoelectric machine with plural independent outputs and improved rotor conductor
11/1990
11/29/1990WO1990014265A1 Process and device for marine propulsion
11/29/1990DE3916882A1 Driving marine vessel using force on charge carriers in ambient water - flowing through pipe in which electric and magnetic fields are generated
11/28/1990EP0399131A1 Electric motor whose poles are set according to the direction of the axis without commutator parts, and magnetic motor based on the same principle
11/20/1990CA1276672C Energy density homopolar generator
11/06/1990USH838 Variable resistivity slip ring
10/1990
10/02/1990US4960472 Alloying, insertion, multilayer
08/1990
08/09/1990WO1990009054A1 Unipolar motor and mechanical conversion system and method
08/02/1990DE4001869A1 Rotatable unipolar electrodynamic machine - has zone of strong and zone of weak magnetic flux in air gap between poles of main yoke
07/1990
07/10/1990US4940878 Alloyed zones penetrating layers of different metals, rotors, elimination of eddy currents
06/1990
06/21/1990DE3941336A1 Unipolar generator providing AC or DC output - has counter-pole rotated relative to conductors to generate current
05/1990
05/01/1990US4922163 Actively cooled brush box assembly
04/1990
04/19/1990WO1990004282A1 Concentric pole electric motor
12/1989
12/20/1989EP0347089A1 Homopolar devices
11/1989
11/22/1989CN2048258U D.c. generator without reverser
11/16/1989DE3816072A1 Tandem single-pole machine
09/1989
09/26/1989CA1260521A1 Magnetic field compensated liquid metal current collector for acyclic generator
09/26/1989CA1260520A1 Fluid cooled acyclic generator having a conductor diffusion bonded to a magnetic steel core
08/1989
08/22/1989US4858304 Method of constructing a rotor assembly for homopolar generator
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