| Patents for B61L 1 - Devices along the route controlled by interaction with the vehicle or vehicle train (1,907) |
|---|
| 06/14/1983 | US4387870 Transit vehicle shunt determination |
| 05/03/1983 | CA1145828A1 Sensing transducer |
| 04/05/1983 | US4379330 Railroad car wheel detector |
| 03/08/1983 | US4376269 Electronic security memory including on-off controlled oscillator |
| 01/18/1983 | US4368862 Fail-safe magnetic sensing arrangement |
| 01/04/1983 | CA1138971A1 Railway control signal dynamic output interlocking systems |
| 01/04/1983 | CA1138970A1 Railway control signal dynamic input interlocking systems |
| 12/28/1982 | US4365777 Train approach detector |
| 12/21/1982 | US4365196 Proximity sensing transducer with simulation means |
| 10/05/1982 | CA1133101A1 Vital optical coupler circuit arrangement for railroad signaling systems |
| 09/28/1982 | US4351504 Track circuit principle wheel detector |
| 08/10/1982 | CA1129507A1 High power audio frequency transmitter |
| 07/06/1982 | CA1127287A1 Technique for the detection of flat wheels on railroad cars by acoustical measuring means |
| 06/29/1982 | USRE30986 Vital relay driver having controlled response time |
| 06/15/1982 | CA1125881A1 Differential clamp-on railway vehicle wheel detector |
| 06/08/1982 | CA1125428A1 Power transfer apparatus for railroad track circuits |
| 06/08/1982 | CA1125427A1 Railroad interlocking signal system with insulated joint failure and overrun protection |
| 04/28/1982 | EP0050535A1 Railway track circuit |
| 04/20/1982 | US4325524 Track monitoring device |
| 04/14/1982 | EP0049607A2 Communication channel |
| 04/06/1982 | US4323211 Self adjusting wheel bearing heat signal processing circuit |
| 03/23/1982 | US4320881 Fail-safe decoder for digital track circuits |
| 03/23/1982 | US4320880 Electronic track current switching relay system |
| 02/02/1982 | US4314374 High power audio frequency transmitter |
| 02/02/1982 | US4314234 Test set for railway cab signal system |
| 02/02/1982 | US4313583 Railroad car wheel bearing heat signal processing circuit |
| 01/19/1982 | CA1116718A1 Speed insensitive wheel detector |
| 01/13/1982 | EP0043753A1 Loop inducing a current into the two rails of a railway |
| 01/12/1982 | CA1116283A1 Vital relay driver having controlled responsive time |
| 12/15/1981 | US4305556 Railway control signal dynamic output interlocking systems |
| 12/08/1981 | US4304377 Electrical block separating joints for railway signaling systems |
| 11/24/1981 | US4301899 System for automatically controlling an electrically propelled traction vehicle traversing a gap in wayside source of power |
| 11/03/1981 | US4298179 Vital cross field transformer circuit arrangement for railroad signaling systems |
| 10/28/1981 | EP0038639A1 A circuit for detecting unbalance of the traction current in a track circuit |
| 10/13/1981 | CA1110597A1 Concrete sleeper for track circuitry |
| 10/06/1981 | CA1110353A1 Method and apparatus for analyzing performance of electric-traction-motor powered vehicles and electrical operating components thereof |
| 08/11/1981 | US4283031 System controlling apparatus which compares signals from sensors monitoring passing objects with pre-determined parameter information to control the system |
| 06/03/1981 | EP0029631A1 Electronic fail-safe memory usable in railway signalling |
| 06/02/1981 | US4270715 Railway control signal interlocking systems |
| 06/02/1981 | CA1102412A1 Fault monitoring and indicator system |
| 05/05/1981 | US4265419 Apparatus for car counting and discrimination |
| 05/05/1981 | US4265400 Concrete sleeper for track circuitry |
| 05/05/1981 | CA1100616A1 Modulating signal and carrier signal generating circuit |
| 03/18/1981 | EP0025391A1 Reliable low frequency tuning fork oscillator and transmitter comprising such an oscillator |
| 03/11/1981 | EP0024978A1 Method and system for detecting landslip(s) on railways |
| 02/03/1981 | US4248396 Method and apparatus for detecting railroad cars |
| 01/27/1981 | US4247790 Failsafe train vehicle control signal threshold detector apparatus |
| 12/16/1980 | US4239156 Pad for railway rail fastenings |
| 12/09/1980 | CA1091307A1 Fail-safe solid state logic |
| 11/25/1980 | US4236093 Speed insensitive wheel detector |
| 09/02/1980 | CA1085034A1 Alternating current track circuits |
| 09/02/1980 | CA1085033A1 Device for preventing traction power harmonic interference on high frequency track circuits |
| 07/01/1980 | CA1080840A1 Jointless high frequency track circuit systems for railroads |
| 04/29/1980 | US4200856 Differential clamp-on railway vehicle wheel detector |
| 04/22/1980 | US4199413 Electric recording material and electric recording process |
| 04/22/1980 | CA1076242A1 Track circuits with cab signals for dual gage railroads |
| 04/22/1980 | CA1076241A1 Phase-controlled track circuit receiver |
| 04/15/1980 | CA1075801A1 Failsafe train vehicle control signal threshold detector apparatus |
| 02/05/1980 | US4187504 Fault monitoring and indicator system |
| 01/09/1980 | EP0006310A1 Railway control signal dynamic output interlocking systems |
| 01/09/1980 | EP0006309A1 Railway control signal dynamic input interlocking systems |
| 01/01/1980 | US4181849 Vital relay driver having controlled response time |
| 01/01/1980 | US4181278 Railroad interlocking signal system with insulated joint failure and overrun protection |
| 12/18/1979 | US4179744 Method and apparatus for analyzing performance of electric-traction-motor powered vehicles and electrical operating components thereof |
| 10/23/1979 | US4171788 Power transfer apparatus for railroad track circuits |
| 09/06/1979 | WO1979000631A1 A safety device for use with a railway signalling interlock arrangement |
| 08/28/1979 | CA1061429A1 Method and apparatus for coupling a moving-object sensor to direction-sensitive data utilization apparatus |
| 06/27/1979 | EP0002609A1 A system controlling apparatus |
| 06/27/1979 | EP0002608A1 Sensing transducer |
| 05/29/1979 | USRE30012 Magnetic object detection device |
| 05/29/1979 | CA1055591A1 Phase selective track circuit apparatus |
| 05/01/1979 | CA1053791A1 Vital relay operating circuit |
| 01/23/1979 | US4136315 Low and high frequency oscillators having common voltage regulator circuit |
| 01/16/1979 | CA1046619A1 Signal threshold responsive apparatus |
| 12/26/1978 | CA1045238A1 Dual frequency track circuit |
| 12/12/1978 | US4129276 Technique for the detection of flat wheels on railroad cars by acoustical measuring means |
| 12/05/1978 | US4128218 Method of direction finding and direction indication of railbound vehicles |
| 11/28/1978 | CA1043442A1 Electronic wheel detecting devices |
| 11/28/1978 | CA1043435A1 Occupancy detecting a.c. track circuit apparatus |
| 10/03/1978 | US4118750 Vital relay operating circuit |
| 09/26/1978 | US4117463 Circuit fault detection apparatus for railroad track circuit redundant connections |
| 09/12/1978 | CA1038484A1 Track circuit |
| 09/05/1978 | CA1038072A1 Train vehicle protection apparatus including signal block occupancy determination |
| 08/15/1978 | US4107616 Signal monitoring circuit |
| 06/27/1978 | US4097764 Fail-safe solid state logic |
| 05/16/1978 | US4089495 Phase-controlled track circuit receiver |
| 03/14/1978 | US4079323 Method and apparatus for coupling a moving-object sensor to direction-sensitive data utilization apparatus |
| 01/03/1978 | US4066229 Device for preventing traction power harmonic interference on high frequency track circuits |
| 12/27/1977 | US4065081 Alternating current track circuits |
| 10/11/1977 | US4053128 Jointless high frequency track circuit systems for railroads |
| 05/31/1977 | US4026505 Variable high pass coupler |
| 05/10/1977 | US4022408 Track circuits with cab signals for dual gage railroads |
| 02/22/1977 | US4008870 Railroad track alarm |
| 01/11/1977 | US4002314 Train vehicle speed control signal providing apparatus |
| 11/30/1976 | US3994458 Hot box detector system |
| 10/26/1976 | US3987989 Railway signal system |
| 10/19/1976 | US3986691 Phase selective track circuit apparatus |
| 10/05/1976 | US3984073 Antenna apparatus for vehicle track rail signals |
| 07/20/1976 | US3970271 Dual frequency track circuit |
| 06/29/1976 | US3966149 Quad state receiver |