| Patents for H02P 3 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters (5,905) |
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| 03/23/1994 | EP0588234A2 Emergency pull down for a lifting device |
| 03/17/1994 | DE4224620C1 Mains-isolated three=phase asynchronous rotary electrical machine speed monitor e.g. for door - has two=channel processing circuits for delivering bit signals to coupling circuit, which generates output signal when speed is above or below limits, if bit signal changes from rest to active within time window |
| 03/15/1994 | US5294874 Dynamic brake circuit for an electric motor |
| 03/09/1994 | CN1083636A Method for the control of a motor |
| 03/02/1994 | EP0585140A2 Motor drive circuit |
| 03/01/1994 | CA2104980A1 Motor drive circuit |
| 02/23/1994 | EP0583724A2 Method and circuit for controlling a motor |
| 02/16/1994 | EP0582966A1 Apparatus for controlling driving of power window system |
| 02/15/1994 | US5287047 Motor drive circuit and motor drive system using the same |
| 02/15/1994 | US5287005 Actuator control device for automobile air conditioners |
| 02/08/1994 | US5285139 Method and device for controlling motor in a powered seat |
| 01/20/1994 | DE4223216A1 Safety operation circuit for electromotor used for accelerator pedal function - triggers emergency function upon detection of power fault or failure to initiate braking action using drive stage diode arrangement. |
| 01/19/1994 | EP0579015A2 Switching device for the generation of a speed-proportional pulse train |
| 01/18/1994 | CA2037558C Emergency braking system for a squirrel-cage elevator motor |
| 01/12/1994 | EP0578366A2 Controlled braking device for electric motors and in particular portable tools |
| 01/12/1994 | EP0577843A1 Reluctance motor and rotor of high-speed reluctance motor |
| 01/11/1994 | US5278484 Procedure and apparatus for braking a squirrel-cage elevator motor fed by a frequency converter in fault situations |
| 01/11/1994 | US5278483 Motor brake with single free wheeling diode connected in parallel with only one partial coil of brake magnet coil |
| 01/06/1994 | WO1994000909A1 Reluctance motor capable of regenerative braking and direct current motor |
| 01/04/1994 | US5276292 Operation check device of dynamic brake circuit for elevator |
| 12/23/1993 | WO1993026081A1 Vector controller of induction motor |
| 12/22/1993 | EP0575023A1 Drive-circuit for a DC-operated brake of an electromotor |
| 12/16/1993 | DE4216838A1 Regenerative mechanical braking e.g. using DC motor with planet or spur gear unit - always applies input power at gear unit driven shaft and uses resulting electric output power for braking purposes. |
| 12/15/1993 | EP0573658A1 Method of demagnetization prevention and control for electric motor |
| 12/08/1993 | EP0572729A2 Apparatus and three phase induction motor starting and stopping control method |
| 12/06/1993 | CA2097441A1 Controlled braking device for electric motors and in particular portable tools |
| 12/02/1993 | DE4225231C1 Run-up and run-down control for async motor - uses constant voltage during run-up and run-down, with max. voltage supplied at async revs and switching in of short circuit protection |
| 11/25/1993 | WO1993023919A1 Numerically controlled electric driving system with energy recovery function |
| 11/24/1993 | CN2147690Y Electric brake device for motor of domestic electric appliances |
| 11/17/1993 | CN1078581A Numeral-control electric hauling device capable of energy recovery |
| 11/11/1993 | DE4235223C1 Operating and braking circuit for several AC motors coupled via load - has single brake switch connecting braking resistance bridged by free-running diode across DC voltage rail pair supplying all motors |
| 11/09/1993 | US5261025 Method and apparatus for DC motor speed control |
| 11/05/1993 | CA2082212A1 Apparatus and three phase induction motor starting and stopping control method |
| 11/03/1993 | CN1078079A Card drive |
| 10/20/1993 | CN2144366Y Capacitor operation type electromagnetic speed reducing synchronous motor |
| 10/19/1993 | US5254915 Motor control device including an improved braking control arrangement |
| 10/12/1993 | US5252904 For connection to an AC power source; split capacitor motor |
| 10/06/1993 | CN2143387Y AC frequency changing gear |
| 09/21/1993 | US5247140 Brake control system in elevator control apparatus |
| 09/16/1993 | WO1993018576A1 Method and means for stopping backspinning motor |
| 09/09/1993 | DE4207362A1 DC drive emergency braking circuit - has pulse controller supplying excitation current during emergency braking with extra controller for armature current |
| 09/08/1993 | EP0559480A2 Motor drive having invertor |
| 09/01/1993 | EP0557570A1 Brake-actuating watchdog system for use with a microprocessor-based motor control |
| 08/31/1993 | US5241255 Failure detector for regeneration power absorbing means |
| 08/25/1993 | EP0557242A1 Drive system for a woollen card and a card |
| 08/24/1993 | US5239331 Brake device for motor in camera |
| 08/17/1993 | US5237248 Control circuit having double-pole double-throw switching device for electrically powered tool |
| 08/05/1993 | WO1993015550A1 Reluctance motor and rotor of high-speed reluctance motor |
| 08/04/1993 | EP0314812B1 Alternating current motor control system with emergency control |
| 08/04/1993 | EP0278988B1 Alternating current motor control apparatus |
| 07/29/1993 | DE4242560A1 Overcurrent protection circuit, esp for motor drive circuit semiconductor elements - contains switching device, protection diode and detectors for currents in diode and in switching element |
| 07/28/1993 | EP0423384B1 Control arrangement for an elevator system without a speed sensor |
| 07/22/1993 | DE4201023A1 Mains independent braking circuit for series wound or universal motor - having split or single field winding and armature also at least one 2-pole changeover switch having three pairs of contacts |
| 07/22/1993 | DE4201005A1 Mains independent pulse braking circuit for series wound or universal motor - having split or single field winding and armature with changeover switch and starting capacitor maintained charged continuously during mains operation |
| 07/21/1993 | EP0551909A1 Braking circuit having a resistance with reduced load |
| 07/21/1993 | EP0551896A1 Braking circuit for small universal motors |
| 07/21/1993 | EP0551895A1 Braking circuit with low loss |
| 07/21/1993 | CN1021681C Device for overvoltage protection of rectifier bridge feeding dc motor and for control of dc motor |
| 07/20/1993 | US5229695 Controller for automatically stopping motor in response to overcurrent condition |
| 07/18/1993 | CA2085518A1 Dc motor reversing control |
| 07/14/1993 | EP0550952A1 Single-button actuated self-correcting automatic convertible top |
| 07/08/1993 | WO1993013589A1 Method of demagnetization prevention and control for electric motor |
| 07/06/1993 | US5225747 Single-button actuated self-correcting automatic convertible top |
| 06/30/1993 | EP0549004A1 An electronic braking device for asynchronous motors |
| 06/19/1993 | CA2057984A1 Controllable damper |
| 06/09/1993 | EP0545419A1 Inverter unit and controlling method thereof |
| 06/09/1993 | CN2135874Y Self-coupling normal closed electromagnetic brake |
| 06/03/1993 | DE4227719A1 Circuit layout and changeover switch for braking AC commutator motor - has top-dead-centre toggle action switch with intermediate dwell position to prevent mains short-circuit by arcing at contacts during braking |
| 05/04/1993 | US5208741 Chopper circuit for dynamic braking in an electric power conversion system |
| 04/20/1993 | US5203762 Variable frequency centrifuge control |
| 04/01/1993 | WO1993006643A1 Battery-operated device |
| 04/01/1993 | DE4131981A1 Batteriebetriebenes geraet Geraet Battery operated |
| 03/30/1993 | US5198745 Dynamic braking resistor system |
| 03/30/1993 | US5198734 Method and means for stopping backspinning motor |
| 03/28/1993 | CA2079251A1 Circuit arrangement |
| 02/23/1993 | US5189360 Method and apparatus for providing controlled mechanical braking torque |
| 02/17/1993 | EP0527389A1 Electrically controlled shift actuator |
| 02/16/1993 | US5187419 Electric motor control apparatus and method |
| 02/09/1993 | WO1993003531A1 Dynamic braking resistor system |
| 02/09/1993 | CA2092085A1 Dynamic braking resistor system |
| 02/09/1993 | CA2074748A1 Electrically controlled shift actuator |
| 02/02/1993 | US5184049 Motor brake control circuit for reducing motor stopping time |
| 01/27/1993 | EP0459998A4 Method and apparatus for dc motor speed control |
| 01/20/1993 | EP0523667A2 Motor control device |
| 01/20/1993 | EP0303717B1 Drive control system for electric motor |
| 01/19/1993 | US5180959 Electrically controlled shift actuator |
| 01/12/1993 | US5179336 Method for decreasing the speed of an alternating current motor |
| 12/29/1992 | CA1312116C Method and device for braking a squirrel-cage motor |
| 12/23/1992 | EP0519034A1 Circuit for influencing the start-up and/or braking behaviour of three-phase asynchronous motors. |
| 12/15/1992 | US5172038 Peak current control in the armature of a DC motor during plug-braking and other high current conditions |
| 12/10/1992 | DE4118829A1 Stopping slubbing feed mechanism to spinner work station - involves bringing electromotor to rest through event registered by sensor which is electronically evaluated, etc. |
| 12/08/1992 | US5170105 Method for determining operability of an electrical dynamic braking system |
| 12/02/1992 | CN2123651U Clutch of electronic opener |
| 11/25/1992 | CN2123140U Electric control cabinet for flannelette knitting machine |
| 11/17/1992 | US5164572 Abnormal temperature detection device for regeneration resistor |
| 11/11/1992 | EP0512372A2 Electric motor control apparatus and method |
| 11/11/1992 | CN1066041A Motor driven door device |
| 11/03/1992 | US5160875 Dc motor controller with high reliability |
| 10/27/1992 | CA1309477C Control system of pumping operation using ac exciting generator-motor |
| 10/15/1992 | WO1992017935A1 Improved chopper circuit for dynamic braking in an electric power conversion system |