| Patents for B60L 15 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train (8,438) |
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| 11/01/1977 | US4056764 Power supply system having two different types of batteries and current-limiting circuit for lower output battery |
| 10/04/1977 | US4052647 Optimum battery reconnect for a field controlled electric vehicle |
| 08/09/1977 | US4041324 Magnetic shield system for electric cars |
| 07/19/1977 | US4037144 Control device for use in shunt motor |
| 06/21/1977 | US4031477 System for transferring four commands over a single conductor utilizing dual threshold logic gates |
| 06/07/1977 | US4028597 Motor control systems |
| 05/03/1977 | US4021712 Control system for automatic transmission for electric automobiles |
| 04/19/1977 | US4019119 DC to AC voltage converter with automatic start-stop control of motor-generator set |
| 04/12/1977 | US4017044 Train vehicle control apparatus |
| 03/22/1977 | US4013014 Circuit arrangement for a track-bound propulsion vehicle |
| 03/15/1977 | US4012677 Speed control for electrically propelled traction vehicles |
| 02/22/1977 | US4008668 Electric circuit for self-propelling trolleys in storage installations |
| 02/15/1977 | US4008423 Electrically propelled vehicle |
| 02/01/1977 | US4005838 Station stop and speed regulation system for trains |
| 01/04/1977 | US4000872 Advance train line register for a train speed regulation system |
| 11/30/1976 | US3994237 Power supply for realistic control of model railroad engines |
| 10/19/1976 | US3987349 Control systems of electric motors for driving electric motor cars |
| 10/05/1976 | US3984740 Switching circuits using operational amplifiers |
| 09/14/1976 | US3980934 Control circuits for electrically driven vehicles |
| 09/14/1976 | US3980261 Speed governors |
| 08/17/1976 | US3974992 Vehicle velocity limit control method and apparatus |
| 08/17/1976 | US3974778 Speed control system |
| 07/27/1976 | US3971973 Rheostatic control system for a DC motor |
| 07/13/1976 | US3969654 Propulsion train line encoder for a train speed regulation system |
| 07/06/1976 | US3968414 Bypass contactor control |
| 06/29/1976 | US3967175 Automatic sequencing scheme for reversing directions of electric traction motors |
| 06/29/1976 | US3967134 Electrical control apparatus |
| 06/01/1976 | US3961233 D-C voltage control |
| 05/25/1976 | US3959701 Drive system for electrically driven vehicles |
| 05/18/1976 | US3958163 Method and apparatus for plug sensing |
| 05/18/1976 | US3957236 Method and apparatus for transitioning diverse power sources to rail vehicles |
| 04/06/1976 | US3949284 Control circuits for electrically driven vehicles |
| 03/16/1976 | US3944900 Control circuits for electrically driven vehicles |
| 03/16/1976 | US3944898 Control circuits for electrically driven vehicles |
| 03/09/1976 | US3943420 Electric vehicles |
| 02/10/1976 | US3937431 Postioning apparatus for tracked transport vehicles with linear motor propulsion |
| 02/03/1976 | US3936709 Control circuits for electrically driven vehicles |
| 01/20/1976 | US3934125 Automatic vehicle operation system |