| Patents for B61L 29 - Safety means for rail/road crossing traffic (1,017) |
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| 04/08/1992 | CN2101005U Micro alarming device of railway cross |
| 03/24/1992 | US5098044 Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment |
| 03/03/1992 | US5092544 Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment |
| 01/02/1992 | EP0463127A1 Arrangement for identifying an object by means of structure-borne noise, and use of said arrangement. |
| 12/11/1991 | CN1056842A Infrared monitor for alarming of automatically putting down rod at railway junction |
| 07/13/1991 | WO1991010584A1 Arrangement for identifying an object by means of structure-borne noise, and use of said arrangement |
| 07/13/1991 | CA2049023A1 Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement |
| 07/09/1991 | US5029780 Multi-frequency railroad grade crossing termination shunt assembly |
| 06/26/1991 | EP0433768A2 Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment |
| 06/11/1991 | US5022613 AC and battery backup supply for a railroad crossing gate |
| 05/29/1991 | CN2077825U Collision damage proof blocking bar |
| 05/22/1991 | CN1012636B Automatic barrier block device for railway crossing |
| 04/03/1991 | CN2074272U Infrared monitor for automatic barrier-falling warning at rail/road crossing traffic |
| 03/27/1991 | CN2073842U Multifunctional level crossing electric/automatic barriers |
| 02/14/1991 | DE3810672A1 Dynamically optimised counterweight for rotational movements over a sector of a circle |
| 12/19/1990 | CN2067668U Vertical lift type single rope flexible barrier for level crossing |
| 12/05/1990 | CN2066823U Automatic controlling hydraulic barrier for railway cross |
| 10/24/1990 | CN1046308A Hidden sensor for testing train passing through |
| 10/10/1990 | CN1045949A Safety protective system for railway level crossing junction |
| 08/29/1990 | CN2061146U Automatic alarm for correlation type railway crossing |
| 08/15/1990 | CN1044622A Phonetic automatic alarm of railway crossing |
| 07/31/1990 | CA1272280A1 Extensible railroad grade crossing gate arm |
| 07/17/1990 | US4942395 Railroad grade crossing motorist warning system |
| 06/19/1990 | US4934633 Crossing control unit |
| 06/19/1990 | CA1270549A1 Anti-collision safety system for moving and/or stationary vehicles |
| 04/25/1990 | CN2056407U Unmanned control light automatic display device for rail/road crossing traffic |
| 03/28/1990 | CN2055118U Automatic gate arm controller for railway crossing |
| 02/06/1990 | US4897960 Railroad crossing gate |
| 01/23/1990 | US4895325 Railroad gate arm lamp circuit |
| 11/16/1989 | DE3822227C1 Circuit arrangement for the interface between a railway safety system and a road traffic signalling system |
| 10/11/1989 | CN2045717U Safety traffic lamps for road and railway cross |
| 09/20/1989 | EP0333184A1 Electrohydraulic crossing barrier driving machinery |
| 09/19/1989 | US4868538 Random signature island circuit |
| 09/13/1989 | CN2044233U Automatic safety device for railway crossing |
| 08/02/1989 | CN1034338A Automatical barrier used at intersection of railway and road |
| 06/29/1989 | DE3743348A1 Barrier |
| 06/29/1989 | DE3743347A1 Barrier |
| 06/29/1989 | DE3743305A1 Barrier |
| 05/24/1989 | CN2038078U Safety device used for crossroads of railway and highway |
| 03/29/1989 | CN2034931U Electrical hydraulic gate |
| 02/22/1989 | CN2032971U Passive en-block composition feeler unit for railway |
| 02/01/1989 | CN2031779U Safety alarm system for level crossing |
| 11/15/1988 | US4784356 For a railway crossing arm having a signal relay switch |
| 10/19/1988 | CN88212792U Automatic audio warning equipment for railway road crossing |
| 04/20/1988 | CN87207433U Automatic road junction alarm working at the time of train approaching |
| 03/30/1988 | CN87105657A Automatic barrier block device for railway crossing |
| 02/17/1988 | CN85104103B Automatic signalling device with valvular pulse path circuit for crossroads |
| 11/04/1987 | CN87203757U Rotary double-arm hydraulic gangway rails |
| 10/27/1987 | US4703303 Solid state railroad lights/gate controller |
| 10/03/1987 | CN86206500U Hydraulic road stopper for railway junctions |
| 09/09/1987 | EP0235171A1 Anti-collision security system for mobiles in motion and/or stopped |
| 08/26/1987 | EP0233852A1 Extensible railroad grade crossing gate arm |
| 08/05/1987 | CN86204067U Converging-magnetic differential sourceless electromagnetic crossing alarm device |
| 05/19/1987 | US4666108 Extensible railroad grade crossing gate arm |
| 05/06/1987 | CN85202442U Electric gate for road crossing traffic |
| 04/29/1987 | CN86206038U Automatic warning device for unmanned railway crossing |
| 04/07/1987 | US4655002 Railroad crossing warning gate |
| 03/12/1987 | WO1987001491A1 Anti-collision security system for mobiles in motion and/or stopped |
| 01/22/1987 | DE3524751A1 Combined level crossing safety system and road traffic control signalling system |
| 12/31/1986 | CN85104103A Automatic signalling device with valvular pulse path circuit for crossroads |
| 12/10/1986 | CN85205874U Gate of railway crossing driven by cycloid electric motor |
| 11/04/1986 | US4621252 Method for indication whether a vehicle can pass under an obstruction |
| 09/23/1986 | US4613103 Crossing bell and flasher |
| 08/20/1986 | CN85205876U Box-type electric controlled crossing barrier with hydraulic transmission |
| 07/16/1986 | CN85103194A Electric hydraulic rail equipment |
| 04/08/1986 | US4581700 Processing system for grade crossing warning |
| 08/28/1985 | EP0152749A2 Presence detecting arrangement for railway vehicles in predetermined traffic areas |
| 12/27/1984 | EP0128897A1 Skirt member for crossing guard rail |
| 06/21/1984 | WO1984002314A1 Skirt member for crossing guard rail |
| 02/21/1984 | CA1162630A1 Dual signal frequency motion monitor and broken rail detector |
| 01/24/1984 | CA1161149A1 Railroad highway crossing warning system |
| 07/05/1983 | CA1149489A1 Railway car detection and signal control system |
| 06/07/1983 | CA1147838A1 Railroad grade crossing constant warning protection system |
| 12/28/1982 | US4365777 Train approach detector |
| 12/21/1982 | US4365196 Proximity sensing transducer with simulation means |
| 10/05/1982 | CA1133103A1 Multiplexing means for motion detectors at grade crossings |
| 04/13/1982 | US4324376 Railroad highway crossing warning system |
| 01/05/1982 | CA1115800A1 Driver alert system |
| 12/29/1981 | US4307860 Railroad grade crossing constant warning protection system |
| 12/22/1981 | US4306694 Dual signal frequency motion monitor and broken rail detector |
| 10/20/1981 | US4296496 Emergency radio frequency warning device |
| 09/01/1981 | CA1108277A1 Highway crossing system with improved motion detecting apparatus |
| 08/25/1981 | US4285483 Electronic events recording means |
| 08/11/1981 | US4283031 System controlling apparatus which compares signals from sensors monitoring passing objects with pre-determined parameter information to control the system |
| 06/09/1981 | CA1102904A1 Highway crossing system with improved ring sustain feature |
| 02/17/1981 | US4251041 Multiplexing means for motion detectors at grade crossings |
| 08/26/1980 | CA1084616A1 Fail-safe time delay circuit |
| 08/12/1980 | CA1083698A1 Railroad warning signal device |
| 05/13/1980 | CA1077610A2 Grade crossing assembly |
| 04/22/1980 | US4199413 Electric recording material and electric recording process |
| 04/01/1980 | US4196412 Driver alert system |
| 12/18/1979 | CA1068142A1 Grade crossing assembly |
| 11/20/1979 | CA1066544A1 Laterally adjustable adapter bracket for a grade crossing gate and signal assembly |
| 10/30/1979 | US4172576 Highway crossing system with motion detecting apparatus |
| 07/10/1979 | CA1058310A1 Crossing detector with positive information for a given crossing area |
| 06/27/1979 | EP0002609A1 A system controlling apparatus |
| 06/27/1979 | EP0002608A1 Sensing transducer |
| 05/01/1979 | CA1053785A2 Traffic control signal assembly |
| 04/17/1979 | US4149690 Positive-response transit detector for a given transit zone |
| 10/17/1978 | US4120471 Highway crossing system with improved ring sustain feature |