Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02K - Dynamo-electric machines › H02K 21 - Synchronous motors having permanent magnet; Synchronous generators having permanent magnet
Patents for H02K 21 - Synchronous motors having permanent magnet; Synchronous generators having permanent magnet (17,141)
09/1982
09/21/1982US4349957 Method of making a bobbin wound stepping motor
09/08/1982EP0059183A1 Stepping motor, particularly for electronic watch
09/07/1982US4348605 Electrical reluctance machine
09/01/1982EP0058791A1 Electrical rotating machines
08/1982
08/31/1982US4346773 Apparatus for operating a motor vehicle
08/18/1982EP0058025A1 Rotary electrical machines
08/03/1982CA1128982A1 Magnetic rotary pulse generator
07/1982
07/28/1982EP0056521A2 Electric motor
07/28/1982EP0056470A2 Rotating magnetic brush device
07/20/1982CA1128104A1 Variable speed a.c. motor
07/13/1982US4339679 Low-inertia high-torque synchronous induction motor
07/08/1982WO1982002291A1 Diphased stepping motor
07/06/1982US4338533 Electric machine excited by permanent magnets
06/1982
06/29/1982US4337405 Electric generator
06/10/1982WO1982001967A1 Compound interaction/induction electric rotating machine
06/08/1982US4334164 Multi-speed permanent magnet motor
06/08/1982US4334160 Rotating electrical machine
06/01/1982US4333026 Stepping motor
05/1982
05/18/1982US4330727 Electric step motor
05/18/1982US4330724 Stepping motor
05/11/1982US4329636 Rotation sensor device
05/11/1982US4329606 Electric motor construction
05/04/1982US4328439 Inductive signal source for internal combustion engine ignition system
04/1982
04/28/1982EP0050456A1 Electric motor
04/27/1982US4327302 Electronically commutated motor, stationary and rotatable assemblies therefore, and lamination
04/27/1982US4327299 Stepping motor
04/27/1982CA1122639A1 Two-stage electric generator system
04/15/1982WO1982001252A1 D.c.generator type non-contact speed sensing device
04/13/1982US4324992 Electromagnetic motor
04/07/1982EP0049102A1 Internal combustion engine electrical systems
04/07/1982EP0049101A1 Internal combustion engine electrical systems
04/01/1982WO1982001073A1 D.c.generator type non-contact speed sensing device
03/1982
03/30/1982US4322648 Permanent magnet motor armature
03/23/1982US4321495 Rotary pulse generator
03/18/1982WO1982000929A1 Stepping motor,particularly for electronic watch
03/16/1982CA1120101A1 Non-interruptible power supply systems
03/16/1982CA1120100A1 Alternator with parallel windings and regulator therefor
03/02/1982US4318019 Alternator for wind generator
03/02/1982US4318018 Rotary pulse generator
02/1982
02/16/1982US4316110 Signal generating device
02/10/1982EP0045649A2 Speed detector for sewing machines
01/1982
01/12/1982USRE30847 Tubular wheel speed sensor
01/06/1982EP0043068A1 Stator device for a small motor, especially a claw-pole stepping motor
12/1981
12/29/1981US4307698 Distributor for contactless ignition apparatus for internal combustion engine
12/23/1981EP0042343A1 Magneto-flywheel ignition for combustion engines
12/08/1981US4305031 Rotary electrical machine
12/01/1981US4303843 Multiple magnetic flywheel driven by a centrifugal clutch
10/1981
10/28/1981EP0038744A1 Stepping motor, especially for an electronic watch
10/28/1981EP0038739A1 Multipolar permanent magnet stepping motors
10/27/1981US4297604 Axial air gap alternators/generators of modular construction
10/27/1981CA1111478A1 Multi-voltage and multi-frequence alternator/generator of modular construction
10/20/1981US4296341 Self-starting single-phase synchronous motor
10/13/1981CA1110730A1 Apparatus and method for indicating condition of a rotating body
09/1981
09/29/1981US4292532 Two-stage electric generator system
08/1981
08/18/1981US4284916 Rotary signal generator
08/18/1981CA1107348A1 Breakerless magneto device
08/11/1981US4283646 Brushless electric motor
08/11/1981US4283644 DC Motor
07/1981
07/21/1981US4280072 Rotating electric machine
07/01/1981EP0031047A2 Permanent-magnet excited rotor for a synchronous machine
06/1981
06/30/1981US4276490 Brushless DC motor with rare-earth magnet rotor and segmented stator
06/30/1981US4276482 Line flow electric power generator
06/16/1981US4274026 Electric rotating machine
06/16/1981US4274024 Self-starting synchronous motor with defined direction of rotation
05/1981
05/19/1981US4268771 Magnetic probe
04/1981
04/21/1981US4263525 Signal generating means
04/14/1981US4262223 Electro-magnetic motor for timepiece
04/08/1981EP0026584A1 Improvements in and relating to turbo electric generators
04/07/1981US4260920 Multi-pole permanent magnet rotor
03/1981
03/17/1981US4256986 Magnetic pickup subassembly
03/17/1981US4256563 Boron oxide, platinum group oxide, iron and manganese oxide
03/10/1981US4255681 Miniature synchronous electric motor
02/1981
02/17/1981USRE30522 Rotor for wheel speed sensor assembly
02/11/1981EP0023801A1 Speed detectors
02/10/1981US4250424 Rotor of synchronous machines
02/05/1981WO1981000331A1 Small a.c.motor with permanent magnet rotor having a reciprocating motion
02/03/1981US4249096 Electrical dynamo
01/1981
01/28/1981EP0023123A1 Brushless tachometer generator
01/27/1981US4247265 Centrifugal pump for small throughputs, particularly for water circulation in aquariums and the like
01/20/1981US4246504 Electric motors
01/14/1981EP0022379A1 Permanent magnet generator
01/14/1981EP0022222A1 A portable power tool having an electric motor with a rotatable armature shaft, and a tachometric generator
01/06/1981CA1093135A1 Noise reduction in a permanent magnet synchronous motor
12/1980
12/23/1980US4241270 Synchronous electric motor
12/10/1980EP0020178A1 Rotational speed detector
12/02/1980US4237396 Electromagnetic machines with permanent magnet excitation
12/02/1980US4237394 Frequency generator and miniature motor provided with the same
11/1980
11/25/1980US4236094 Ignition transducer for vehicle engines
11/12/1980EP0018801A1 Rotary electrical machines
10/1980
10/16/1980WO1980002203A1 Stepping polyphased motor for a clockwork mechanism
10/14/1980CA1087671A1 Permanent magnet generator
10/07/1980US4227136 Variable speed A.C. motor
10/07/1980US4227105 Annular magnet assembly
09/1980
09/16/1980US4223263 Combination exciter/permanent magnet generator for brushless generator system
09/09/1980US4221985 Vehicle tachometer generator
09/09/1980CA1085442A1 Permanent magnet rotating electric machine with armature having indented salient pole pieces
08/1980
08/12/1980US4217509 Single phase stepping motor
08/12/1980CA1083677A1 Microwave oven with a turntable driven by magnetic force
07/1980
07/29/1980US4215286 Variable reluctance electromagnetic pickup
07/22/1980US4214181 Self-starting miniature synchronous motors
1 ... 160 161 162 163 164 165 166 167 168 169 170 171 172