| Patents for H02P 29 - Arrangements for regulating or controlling electric motors, appropriate for both ac- and dc-motors (5,779) |
|---|
| 12/09/1980 | US4238084 Method of controlling winding tension |
| 11/04/1980 | US4232257 Web transport capstan control system |
| 10/30/1980 | WO1980002346A1 D.c.motor speed control circuit |
| 10/15/1980 | EP0017403A1 A method of, and apparatus for, operating an induction motor |
| 10/14/1980 | US4228385 Speed-regulated positioning drive |
| 10/07/1980 | US4227127 Motor speed control circuit having improved starting characteristics |
| 09/23/1980 | US4224545 Speed control |
| 08/19/1980 | US4218735 Digital motor control system |
| 08/19/1980 | US4218639 Tape tension control for tape recording and/or reproducing system |
| 07/22/1980 | US4214193 Digital servo anti-hunt circuit |
| 05/27/1980 | CA1078453A1 Hgh stability digital head servo for video recorders |
| 04/30/1980 | EP0010199A1 Printer escapement control system |
| 04/15/1980 | US4198572 Regulated apparatus for the generation of electrical energy, such as a wind generator |
| 04/08/1980 | US4197508 Period-to-voltage converting device |
| 04/08/1980 | US4196992 Camera film winding and shutter release mechanism |
| 04/08/1980 | US4196685 Thread abnormality detection utilizing integrator and comparator in conjunction with rotary thread tension disk |
| 04/01/1980 | CA1074752A1 Centrifuge |
| 03/18/1980 | US4194144 Constant velocity driving means |
| 03/11/1980 | US4193020 Phase lock control system with trajectory correction |
| 02/19/1980 | US4188982 Woven fastener stringer |
| 02/19/1980 | CA1072183A1 Electrical control |
| 12/25/1979 | US4180812 Dental treatment apparatus |
| 12/04/1979 | US4177411 Speed-and-phase control circuit for a rotary machine |
| 11/06/1979 | CA1065963A1 D.c. motor starter with speed discrimination |
| 10/16/1979 | CA1064574A1 Apparatus for synchronising ac-motors |
| 10/04/1979 | WO1979000714A1 Motor speed controlling circuit |
| 10/02/1979 | CA1063727A1 Turntable speed control system |
| 09/25/1979 | US4168611 Acceleration and/or deceleration control system for mechanical power drives |
| 08/14/1979 | US4164191 Sewing machine motor actuated pneumatic pump for needle threading |
| 06/19/1979 | US4158798 Control circuits for windscreen wipers for road vehicles |
| 05/22/1979 | US4155426 Digital speed pattern generator |
| 05/01/1979 | CA1053752A1 Apparatus for controlling controlled systems with dead time |
| 04/10/1979 | US4149236 Process for control or regulation of analog electrical machines |
| 04/10/1979 | US4149193 Facsimile drive with dynamic brake |
| 04/10/1979 | US4149117 Circuit and method for servo speed control |
| 04/03/1979 | US4147966 Means for digital control |
| 04/03/1979 | US4147526 Glass fiber producing and collecting apparatus |
| 03/27/1979 | US4146922 Constant velocity driving means |
| 03/06/1979 | US4143310 Apparatus for positioning |
| 02/13/1979 | US4139811 Method and means for increasing the stiffness of limited frequency servo systems |
| 02/06/1979 | CA1048146A1 Speed and phase control system |
| 12/19/1978 | US4130184 Elevator speed control system |
| 11/21/1978 | US4126818 Hybrid stepping motor unit |
| 09/26/1978 | US4117408 Apparatus for indicating the loading of an electric ac motor |
| 09/05/1978 | US4112274 Electrical control |
| 07/18/1978 | US4100868 Apparatus for limiting maximum number of stitches of sewing-machines |
| 07/04/1978 | US4099107 Apparatus for synchronizing AC-motors |
| 03/28/1978 | US4081728 DC motor control circuit |
| 03/07/1978 | US4078193 Capstan speed control system |
| 01/10/1978 | US4067423 Control system for rotary drill |
| 01/10/1978 | US4067276 Control device for a sewing machine |
| 01/03/1978 | US4066936 Hybrid battery electric drive |
| 11/01/1977 | US4056759 Driving system for moving paths or escalators |
| 10/04/1977 | US4052652 Apparatus for tightening and releasing a pressure vessel clamping nut |
| 10/04/1977 | US4052642 Apparatus for controlling controlled systems with dead time |
| 09/27/1977 | US4050747 Digital wheel speed circuit arranged to compensate for dimensional irregularities of sensor rotor member |
| 09/13/1977 | US4048549 Circuit for eliminating current noises from d.c. motor |
| 09/06/1977 | US4047231 High stability digital head servo for video recorders |
| 08/09/1977 | US4040508 Control circuit for controlling the shaft speed of a motor having clutch and brake devices |
| 07/05/1977 | US4034415 Thermal protection for D.C. motors |
| 06/07/1977 | US4028604 Servo-motor control system |
| 05/17/1977 | US4024445 Circuit for producing for a feedback motor speed control loop an error signal immune to a change in the source voltage |
| 03/29/1977 | US4015180 Speed regulating devices for rotary machines or the like |
| 02/15/1977 | US4008424 Bidirectional speed control system |
| 02/15/1977 | US4007582 Method and apparatus for synchronizing an electrodynamic clockwork drive |
| 02/08/1977 | US4007408 Apparatus for synchronization of a motor |
| 01/18/1977 | US4004204 Method for regulating the material supply to a processing machine having an electric drive motor |
| 01/11/1977 | US4002891 Mixer control system |
| 11/02/1976 | US3989129 Modulated electric slip clutch |
| 09/28/1976 | US3983316 Turntable speed control system |
| 09/07/1976 | US3979080 Analog automatic slowdown system |
| 07/20/1976 | US3970909 Constant speed regulator for DC motor |
| 05/25/1976 | US3959698 Speed control system for a coiler drive motor |
| 05/18/1976 | US3958271 Tracking control circuit using a delayed tach signal |
| 05/04/1976 | US3955097 Alternator driven by a vehicle engine |
| 05/04/1976 | US3954018 Pulley drive control system |
| 04/13/1976 | US3949622 System for elimination of consequences of angular clearances in driving gears, especially for machine tool driving gears |
| 03/02/1976 | US3942081 Winding and re-winding apparatus using a D.C. motor with an electronic commutation device |
| 01/13/1976 | US3932794 Revolution speed controller using both analog and digital control |