| Patents for H02P 3 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters (5,905) |
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| 10/15/1992 | DE4111853A1 Revs limiting device e.g. for locomotive motor - uses oscillator circuit to provide motor braking above given threshold revs |
| 10/13/1992 | US5155305 Delayed start of elevator car deceleration and creep using VVVF technology |
| 10/07/1992 | EP0507538A2 Electrical actuator with means for preventing dither at a limit switch |
| 09/30/1992 | EP0506626A1 Device for controlling a power window regulator assembly in motor vehicles |
| 09/29/1992 | US5151642 Apparatus for controlling an electric motor |
| 09/29/1992 | US5151637 Deceleration apparatus for motor and drive circuit for use in motor deceleration apparatus or control apparatus for use in sewing machine |
| 09/23/1992 | CN2116993U Digital controlling electric driven device with energy recovering function |
| 09/09/1992 | EP0502773A2 Motor control device, in particular for driving elevator doors |
| 09/09/1992 | CN2115615U Ac asynchronous motor braking controller |
| 09/02/1992 | EP0501036A1 Speed control device for electric motor vehicles |
| 08/25/1992 | US5142433 Motor drive circuit |
| 08/19/1992 | EP0241561B1 Circuit for generating brake pulses |
| 08/18/1992 | US5139156 Variable speed electric hoist |
| 08/11/1992 | US5138242 Inverse electromotive force eliminating device for motor utilizing MOS-FET |
| 07/23/1992 | WO1992012570A1 Circuit for influencing the start-up and/or braking behaviour of three-phase asynchronous motors |
| 07/23/1992 | DE4101341A1 Frequency transverter for operating polyphase induction motor - with control electronics to set operating frequency and voltage according to ideal motor speed |
| 07/21/1992 | US5132598 High torque inhibitor |
| 07/01/1992 | EP0493009A1 Variable frequency centrifuge control |
| 06/21/1992 | CA2058217A1 Variable frequency centrifuge control |
| 06/03/1992 | EP0488240A1 Inverter apparatus provided with electric discharge control circuit of DC smoothing capacitor and method of controlling the same |
| 06/03/1992 | EP0328536B1 Braking circuitry for commutator motors |
| 06/03/1992 | CN2106382U Electric servo amplifier |
| 06/02/1992 | CA1302480C Method to control stops of an intermittently operating electric motor |
| 05/26/1992 | US5117166 Chopper circuit for dynamic braking in an electric power conversion system |
| 05/21/1992 | DE3546719C2 Switching circuit for rpm control of electrical machine |
| 05/14/1992 | WO1992008274A1 Circuit for limiting the cut-off voltage of an actuator motor |
| 05/12/1992 | US5111925 Device for automatically halting an electric motor after a certain number of revolutions |
| 05/07/1992 | DE4035066A1 Schaltungsanordnung zur begrenzung der abschaltspannung an einem stellmotor Circuit arrangement for limiting the cutoff voltage to a servomotor |
| 05/07/1992 | DE4034558A1 Motor control system for motor-driven car seat |
| 04/21/1992 | CA1299236C Variable motor speed control for automatic washer |
| 04/02/1992 | WO1992005626A1 Apparatus for controlling series wound d.c. machines |
| 03/25/1992 | CN1015977B Controlling apparatus in elevator |
| 03/24/1992 | US5099184 Electrical series motor with dynamic braking circuit |
| 02/11/1992 | CA1295660C Motor stoppage detection using back emf voltage |
| 02/11/1992 | CA1295659C Method for stopping an electric motor |
| 01/23/1992 | DE4022637A1 Braking circuit for commutator motor of power tool - uses energy stored in capacitor during operation of motor to enforce self-excitation with set polarity |
| 01/21/1992 | CA1294669C Apparatus and method for braking an electric motor |
| 01/15/1992 | CN1057931A Line voltage three phase asynchronous squirrel-cage motor braking device |
| 01/14/1992 | US5081405 Electrical actuator with means for preventing dither at a limit switch |
| 12/30/1991 | CA2020205A1 Reversing motor controller |
| 12/11/1991 | EP0459998A1 Method and apparatus for dc motor speed control |
| 12/04/1991 | EP0459902A1 Control circuit for electro-mechanical actuator and electro-mechanical actuator utilizing this circuit |
| 12/03/1991 | US5070290 Alternating current motor control system with emergency control responsive to failure of power supply |
| 12/03/1991 | US5070285 Motor stop control device |
| 11/28/1991 | WO1991018391A1 Process for stopping a rotating disk-shaped recording medium |
| 11/28/1991 | DE4016551A1 Verfahren zum anhalten eines rotierenden plattenfoermigen aufzeichnungstraegers A method for holding a rotating plattenfoermigen aufzeichnungstraegers |
| 11/27/1991 | CN2089673U Computer controlled silicon controlled rectifier without circulation ac-ac low frequency power supply |
| 11/12/1991 | US5064031 Motor operated actuator with position encoder for stopping actuator at desired position |
| 11/06/1991 | EP0455237A2 Apparatus for controlling an electric motor |
| 11/05/1991 | US5063319 Universal motor with secondary winding wound with the run field winding |
| 10/30/1991 | EP0453632A2 Motor controller with an improved stopping technique |
| 10/17/1991 | WO1990008996A3 Method and apparatus for dc motor speed control |
| 10/16/1991 | CN1014384B Contactless ac switch with kinetic-energy braking |
| 10/08/1991 | US5055754 Apparatus for detecting an excessive position error in a servo system |
| 10/08/1991 | CA1290387C Brake for a motor |
| 09/26/1991 | DE4106331A1 Fibre prepn. roller braking reducing run-down roller time - using induction motor as drive and stator winding connected through switch system to ac supply |
| 09/18/1991 | EP0446936A2 Electric motor controller with bypass contactor |
| 09/18/1991 | EP0446905A2 Procedure and apparatus for braking a squirrel-cage elevator motor fed by a frequency converter in fault situations |
| 09/17/1991 | US5049793 Method of controlling V/F inverter for machines having mechanical braking systems |
| 08/14/1991 | EP0441030A2 Motor brake circuit for use in a magnetic disk drive system |
| 08/14/1991 | EP0273981B1 Method of controlling an injection motor having overheat preventing function |
| 08/08/1991 | DE4002280A1 Safety brake for drive system of conveyor belt - has brake operated automatically to prevent reversing of drive |
| 08/06/1991 | US5038244 Device for overvoltage protection of a rectifier bridge feeding a d.c. motor and for control of the d.c. motor during emergency braking |
| 07/30/1991 | US5035414 Method of controlling driving of conveyor means in automatic document conveying device |
| 07/23/1991 | US5034669 Regenerative circuit for motor drive system having leakage current compensation |
| 07/09/1991 | US5030900 Spindle orientation control apparatus |
| 07/04/1991 | DE3938654C1 Regenerative braking arrangement for electronically regulated motor - modulates transverse control DC of three bridge circuits carrying control AC |
| 07/03/1991 | CN1052642A Controlling apparatus for elevators |
| 07/02/1991 | CA1285608C Induction motor control apparatus and method |
| 07/02/1991 | CA1285607C Procedure and means for braking a motor with short-circuited rotor |
| 06/26/1991 | EP0434614A1 Automatic stopping device for an electric motor after a given number of revolutions |
| 06/26/1991 | CN2079830U Energy-consuming brake for asynchronous motor |
| 06/25/1991 | CA1285312C Induction motor regenerative brake control apparatus and method |
| 06/11/1991 | US5023530 Windshield wiper motor |
| 06/05/1991 | EP0429494A1 Switched reluctance motors |
| 04/30/1991 | US5012172 Control system for switched reluctance motor operating as a power generator |
| 04/30/1991 | US5012171 Control system for high speed switched reluctance motor |
| 04/24/1991 | EP0423384A1 Control arrangement for an elevator system without a speed sensor |
| 04/23/1991 | US5010283 Motor control circuit |
| 04/18/1991 | WO1991005299A1 Drive systems for transportation mechanisms |
| 04/02/1991 | CA1282454C Reluctance motor control system and method |
| 03/26/1991 | US5003241 Motor stoppage detection using back emf voltage |
| 03/21/1991 | WO1991003866A1 Commutator motor |
| 03/19/1991 | CA1281770C Method and apparatus for improving the regulation of the speed of a motor |
| 03/14/1991 | DE3929407A1 Efficient braking control for variable speed electric motor - uses electronic frequency changer for control of speed and regenerative braking torque using smaller ballast resistor |
| 02/26/1991 | US4996470 Electric motor speed control apparatus and method |
| 02/26/1991 | US4996469 Electric motor controller with bypass contactor |
| 02/21/1991 | DE4025713A1 Stromwendermotor Commutator |
| 02/19/1991 | US4994725 Drive arrangement, especially for a hoist mechanism |
| 02/12/1991 | CA1280192C Retarding system for diesel-electric vehicles |
| 02/05/1991 | US4990844 DC braking of inverter-driven AC motors |
| 02/05/1991 | US4990837 Dynamic braking apparatus for a motor |
| 01/16/1991 | EP0408045A1 Electric motor speed control apparatus and method |
| 01/15/1991 | US4984659 Elevator control apparatus |
| 01/09/1991 | EP0406448A1 Apparatus for detecting abnormal temperature of regenerative resistor |
| 01/02/1991 | EP0406167A1 Control device of a roll element driven by a motor |
| 12/18/1990 | US4978897 Motor controller with an improved stopping technique |
| 12/05/1990 | EP0400455A1 Synchronons motor as well as its operating method |
| 12/04/1990 | US4975627 Brake sequenced elevator motor speed control |
| 11/28/1990 | EP0399146A1 Control system for switched reluctance motor operating as a power generator |