| Patents for H02P 1 - Arrangements for starting electric motors or dynamo-electric converters (9,872) |
|---|
| 01/30/1979 | US4137488 Modified induction motor for use in a three phase power system |
| 01/02/1979 | US4132939 Driving signal control circuit |
| 12/26/1978 | US4131871 Electrical device and method |
| 12/05/1978 | US4128792 Control and protection of brushless synchronous motors |
| 10/24/1978 | US4122517 Thyristor control method for thyristor AC-DC converter |
| 10/17/1978 | US4121140 Motor control circuit |
| 10/10/1978 | US4119893 Circuit for forming an electrical quantity which is proportional to a flux component in a rotating field machine |
| 10/03/1978 | US4118753 Starting device for an asynchronous motor |
| 09/26/1978 | US4117383 Electrical control circuits |
| 09/05/1978 | US4112338 Wiring arrangement for blower motors of an air conditioner |
| 08/15/1978 | US4107586 Control system for a compound DC electric motor |
| 08/15/1978 | US4107583 Dynamoelectric machine winding arrangements, dynamoelectric machines incorporating same and methods of operating such dynamoelectric machines |
| 08/15/1978 | CA1036710A1 Protection circuit for tape recording and/or reproducing apparatus |
| 07/11/1978 | US4100520 Devices for controlling A.C. motors |
| 07/11/1978 | US4100469 Hybrid motor starter |
| 07/11/1978 | US4100468 Electric motor control and method |
| 07/11/1978 | US4100466 Cold start system for motors |
| 06/27/1978 | US4097791 Delayed turn-on and turn-off control circuit |
| 06/13/1978 | US4095149 Optimized electric motor having controlled magnetic flux density |
| 06/06/1978 | US4093869 Quadrature axis field brushless exciter |
| 05/30/1978 | US4092573 Motor starting and protecting apparatus |
| 05/30/1978 | US4092570 Sequential control device |
| 04/18/1978 | US4084406 Chiller controls |
| 03/28/1978 | US4081728 DC motor control circuit |
| 03/21/1978 | US4080556 Compound D.C. electrical motor with shunt field demagnetization protection |
| 03/07/1978 | US4078198 Apparatus for repeating the same process |
| 02/14/1978 | US4074174 Controlling apparatus for asynchronous motors with wound rotor |
| 02/07/1978 | US4072880 Starting control apparatus for AC load |
| 01/17/1978 | US4069424 Shaft turning parking bus for multiple unit installations utilizing a single motorized generator control system |
| 01/03/1978 | US4066937 Control circuit for a two speed single phase motor |
| 12/27/1977 | US4065804 Electronic control system for motors and the like |
| 12/27/1977 | US4065703 Pulse excitation torque amplifier |
| 12/20/1977 | US4064420 Control system for pole-changing-motor-driven compressor |
| 12/13/1977 | US4063135 Electric motor having controlled magnetic flux density |
| 11/15/1977 | US4058755 Kramer system utilizing a commutatorless motor |
| 10/04/1977 | US4052650 Starting device for a single-phase motor |
| 09/13/1977 | US4048528 Starting motor for large inertia load |
| 09/06/1977 | US4047082 Variable threshold starting circuit for induction motor |
| 08/16/1977 | US4042966 Motor control circuit |
| 08/16/1977 | US4042860 Combination starter-protector device |
| 07/12/1977 | US4035701 Method of stepwise speed control and three-phase squirrel-cage motor |
| 06/21/1977 | USRE29275 Motor control system |
| 06/14/1977 | US4030009 Single phase alternating current motor dual speed control circuit |
| 06/14/1977 | US4030008 Single phase alternating current motor dual speed control circuit |
| 05/31/1977 | US4027216 Control device for a synchronous motor |
| 05/24/1977 | US4025833 Torque demand thermal switch |
| 03/29/1977 | US4015178 Reference value transmitter for a phase clipping control for starting a squirrel cage-asynchronous motor |
| 03/15/1977 | US4012679 Method and apparatus for controlling the operation of synchronous motor |
| 03/15/1977 | US4012678 Starting circuit for single phase motor |
| 02/22/1977 | US4009011 Direct current circuitry |
| 12/14/1976 | US3997832 Circuit for applying starting voltage to load |
| 11/23/1976 | US3994015 Or reproducing apparatus |
| 11/23/1976 | US3993940 Latching system for two-phase reversible motor |
| 09/07/1976 | US3979651 Direct current and synchronous motor system |
| 08/31/1976 | US3978382 Control apparatus for two-speed, single phase compressor |
| 08/24/1976 | US3976927 Circuit for the energization of an electric motor with time delay |
| 08/24/1976 | US3976924 Single phase, two pole A.C. resistance split-phase unidirectional induction motor |
| 08/10/1976 | US3974422 Circuit arrangement for overload protection of a drive motor |
| 07/27/1976 | US3971974 Apparatus for controlling the synchronous drive for direct-current motors |
| 07/27/1976 | US3971973 Rheostatic control system for a DC motor |
| 07/27/1976 | US3971971 Electric hoist control and braking system |
| 07/20/1976 | US3970908 A.C. motor starting system |
| 07/20/1976 | US3970907 Pulsating torque apparatus and method |
| 06/22/1976 | US3965392 Motor start system with two dissimilar PTCR elements |
| 06/22/1976 | US3964444 Control circuit for an electromotor |
| 06/08/1976 | US3962616 Start-up control for DC motors |
| 05/25/1976 | US3959704 Solid state motor starter and overload protector circuit |
| 05/25/1976 | US3959702 Starting control system for synchronous motors |
| 05/18/1976 | US3958164 Protective panel circuit |
| 05/04/1976 | US3955170 Solid state switch |
| 03/23/1976 | US3945090 Automatically locking slider for slide fasteners |
| 02/24/1976 | US3940668 Dual duty drive with induction motor |