| Patents for B60L 3 - Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration, power consumption (7,973) |
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| 04/07/1981 | CA1099038A1 Method and apparatus for producing a speed pattern for an elevator car or similar vehicle |
| 03/17/1981 | CA1097787A1 Fail-safe acknowledging circuit |
| 03/04/1981 | EP0024283A1 Fault recording in electronic vehicle controls |
| 02/03/1981 | CA1095148A1 Safety device for a system or apparatus which operates in a sequence of stages |
| 01/27/1981 | US4247790 Failsafe train vehicle control signal threshold detector apparatus |
| 01/21/1981 | EP0022663A1 PWM inverter device |
| 01/06/1981 | US4243940 AC to DC converter for antiskid systems |
| 12/16/1980 | US4240060 Method and device for switching-off a supervision system |
| 11/04/1980 | US4232289 Automotive keyless security system |
| 10/28/1980 | CA1088652A1 Control apparatus |
| 10/14/1980 | CA1087703A1 Multi-channel signal decoder |
| 10/14/1980 | CA1087696A1 Signal amplifier apparatus with fail-safe limited gain |
| 10/07/1980 | US4227132 Thyristor interlock and indicator light circuit for electric vehicles |
| 09/02/1980 | US4220902 Electrical vehicle traction equipment |
| 09/02/1980 | US4220221 Method and apparatus for producing a speed pattern for an elevator car or similar vehicle |
| 08/26/1980 | US4219244 Fault detector for wheel slip control system |
| 07/22/1980 | US4214288 Direct current motor control with protective solenoid latching |
| 06/24/1980 | US4209828 Speed decoding and speed error determining control apparatus and method |
| 06/10/1980 | US4207503 Battery supplied motor current control system with safety circuit |
| 05/13/1980 | US4202275 Device for protecting self-propelled rail vehicles against swaying |
| 04/29/1980 | US4200832 Overload detecting scheme for an electric propulsion system for traction vehicles |
| 04/15/1980 | CA1075801A1 Failsafe train vehicle control signal threshold detector apparatus |
| 01/29/1980 | US4186331 Rotating element rotational speed signal calibrating system |
| 12/04/1979 | US4177459 Fail-safe acknowledging circuit |
| 11/13/1979 | US4174014 Shock absorbent electric vehicle and batteries |
| 10/23/1979 | US4172232 Electric vehicle traction motor control |
| 10/02/1979 | CA1063702A1 Electrically propelled vehicle |
| 08/28/1979 | US4165850 Safety device for a transport system |
| 08/21/1979 | US4164872 Method for determining spinning or slipping of the wheels in propulsion vehicles without dead axles |
| 05/22/1979 | CA1055135A1 Train monitoring and reporting system |
| 03/27/1979 | CA1051541A1 Slippery wheel detector |
| 03/27/1979 | CA1051226A1 Apparatus for measuring and preventing the slip of locomotive wheels |
| 01/23/1979 | US4136303 Torque limiting drive with slip monitor |
| 01/16/1979 | CA1046619A1 Signal threshold responsive apparatus |
| 01/09/1979 | US4134048 Control arrangementt for a wheel slip system |
| 11/28/1978 | CA1043437A1 Frequency responsive speed control apparatus |
| 10/03/1978 | US4118774 Locomotive speed control apparatus |
| 09/12/1978 | US4114047 Control apparatus |
| 08/29/1978 | CA1037591A1 Method of controlling locomotive wheel slip |
| 08/29/1978 | CA1037590A1 Locomotive wheel slip control |
| 06/13/1978 | US4095147 Wheel slip correction method, system and apparatus |
| 06/06/1978 | US4093162 Train operation control apparatus |
| 02/21/1978 | US4075538 Adaptive acceleration responsive system |
| 01/03/1978 | US4066933 Static switching device for two direct current machines |
| 01/03/1978 | US4066300 Digital traction control system |
| 01/03/1978 | US4065975 Apparatus for measuring the slip of locomotive wheels and preventing sliding thereof |
| 08/16/1977 | US4042888 Signal amplifier apparatus with fail-safe limited gain |
| 08/16/1977 | US4042081 Manual control of third rail power knockout |
| 08/09/1977 | US4041470 Fault monitoring and reporting system for trains |
| 08/02/1977 | US4039853 Magnetizing device for permanent magnet motor for electric vehicle |
| 07/05/1977 | US4034168 Device to detect and automatically control electrical potential polarities |
| 06/21/1977 | US4031509 Locked axle detector for a multi-axled traction vehicle |
| 05/24/1977 | US4025836 Protective system against commutation failure in a chopper circuit |
| 04/26/1977 | US4020453 Sensing system for actuating a safety device |
| 03/29/1977 | US4015082 Multi-channel signal decoder |
| 02/15/1977 | US4008423 Electrically propelled vehicle |
| 02/01/1977 | US4005601 Apparatus for detecting rail discontinuities |
| 12/14/1976 | US3997822 Method of controlling locomotive wheel slip |
| 12/07/1976 | US3995560 Rail obstruction sensing means for a rail transportation system |
| 11/23/1976 | US3993270 Slippery wheel detector |
| 11/16/1976 | US3992698 Fail-safe speed command signal decoder |
| 10/19/1976 | US3987425 Leakage resistance detector and alarm circuit |
| 10/05/1976 | US3984743 Regenerative braking controller for D.C. motor |
| 09/21/1976 | US3982164 Locomotive wheel slip control |
| 09/14/1976 | US3980934 Control circuits for electrically driven vehicles |
| 07/06/1976 | US3968414 Bypass contactor control |
| 06/29/1976 | US3966148 Signal threshold responsive apparatus |
| 05/04/1976 | US3955125 Fail-safe active timing circuit |
| 04/13/1976 | US3950681 Control system for an electric vehicle incorporating a brake switch |
| 04/06/1976 | US3949284 Control circuits for electrically driven vehicles |
| 02/10/1976 | US3937152 Oscillation sensitive vehicle motor control |
| 02/03/1976 | US3936707 Operating apparatus for electrically driven vehicles |
| 01/27/1976 | US3934940 Safety interlock circuit for switching brake antilock systems in a tractor trailer vehicle combination in and out |