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| Number | Title | Issue Date |
| 7950608 | System, method and apparatus for railroad gate flasher assembly having a sealed, rodent-proof connection between in-place foundation and utility mast A railroad crossing gate flasher assembly has a sealed, rodent-proof connection for electrical cables that pass from the foundation to a junction box. A clearance between the bottom of the junction box and the top of the foundation is sealed with a plate to prevent ... | 05/31/2011 |
| 7441727 | Highway-rail grade crossing controller with out of service mode An electronic controller for a highway-railroad grade crossing warning system is coupled to an approach circuit and to an island circuit and activates a warning device when a train is present in either of the approach or the island circuits. The controller has a dis... | 10/28/2008 |
| 7429935 | Directional audio train signaling system and method A system and method for a directional audio train signaling system that comprises a receiver for receiving a signal indicating the approach of a train to a point of interest and one or more directional audio transmitter systems for transmitting a warning related to ... | 09/30/2008 |
| 7353093 | Template crossing design and programming for highway-rail grade crossings A method of programming or designing application logic for a highway-rail grade crossing warning system including the steps of providing a set of templates, each template of the set of templates defining a track circuit application for a grade crossing with differen... | 04/01/2008 |
| 7342510 | Displaying information on a gate system Systems, methods, and devices, including program instructions, are provided for displaying information on a gate system. One embodiment includes a processor and a memory associated with a vehicle gate system. Program instructions are storable on the memory and execu... | 03/11/2008 |
| 7270442 | System and method for monitoring status of a visual signal device System and method for monitoring status of a visual signal lamp. The system includes at least one optical fiber comprising a first end and a second end. The first end is positioned proximate to the signal lamp and is oriented to capture a portion of light signal emi... | 09/18/2007 |
| 7268699 | Highway-rail grade crossing hazard mitigation A hazard mitigation system to detect an object in a highway-railway grade crossing. A structure is provided that includes a fixed foundation and a surface layer that is cushionably placed above the foundation, such that the structure is located between tracks at the... | 09/11/2007 |
| 7195211 | Electronically controlled grade crossing gate system and method An electronically controlled grade crossing gate system and method. The system includes a gate arm, a gate arm moving assembly, a position sensor assembly and a controller. The gate arm moving assembly is configured to move the gate arm and the position sensor assem... | 03/27/2007 |
| 7154403 | Apparatus and method for monitoring the output of a warning or indicator light An operational status detection system for a railroad warning device having a warning light, comprising: a photodiode configured to generate a signal corresponding to a light output of the warning light of the railroad warning device; an amplifier for increasing a s... | 12/26/2006 |
| 7140577 | Remote system for monitoring and controlling railroad wayside equipment A system for remote control of an electrically operated railroad wayside equipment having a power supply for powering the wayside equipment. a central controller provides central control signals. A transmitter associated with the controller receives the control sign... | 11/28/2006 |
| 7123165 | Apparatus and method for monitoring the output of a warning or indicator light An operational status detection system for a railroad warning device having a warning light, comprising: a photo detector configured to generate a signal corresponding to a light output of the warning light of the railroad warning device, the photo detector comprisi... | 10/17/2006 |
| 7098774 | Method and apparatus for monitoring and controlling warning systems A system for monitoring and controlling activation of a warning system includes a sensor module locally coupled to the warning system for sensing and controlling a flashing light of the warning system, a transceiver responsive to a microcontroller, and a power line ... | 08/29/2006 |
| 7060814 | Probe for constructing probe-polymer method of constructing probe-polymer and utilization thereof The present invention provides a method for measuring a target gene under isothermal conditions without using enzyme. A pair of probes each having n (n≧3) base sequence regions complementary to each other are hybridized alternately to form a double-stranded probe-... | 06/13/2006 |
| 6997417 | Apparatus for controlling traffic flow along a pathway A railroad crossing gate with a gate assembly. An extendible member slides within an outer member with minimal friction. When the gate is in its open position, gravity retracts the extendible member to hollow member. When the gate is in its blocking position, gravit... | 02/14/2006 |
| 6688561 | Remote monitoring of grade crossing warning equipment A system (40) and method for remotely monitoring the operating status of railroad grade crossing warning equipment. A sensor (46) generates a signal (48) responsive to the operation of a grade crossing annunciator (42). In one embodiment, the annunciator ... | 02/10/2004 |
| 6641091 | Highway railroad crossing vehicle detection methods and systems In one embodiment, the a method for collecting railroad crossing data is disclosed. The method includes detecting a presence of at least one of pedestrians and vehicles within a boundary of the railroad crossing, storing a count of the presence of pedestr... | 11/04/2003 |
| 6565046 | Method of detecting obstacles on railroad lines A method and system of detecting obstacles on railroad lines. Sensors for observing the railroad line are arranged along the railroad line, and automatic evaluation takes place. One advantage of the invention is that the railroad lines are divided into gi... | 05/20/2003 |
| 6416021 | Locomotive whistle controlled railroad grade crossing warning system A railroad grade crossing warning device designed to operate at un-guarded grade crossings without the need for expensive train detection sensors. The system utilizes the sound of an approaching locomotive horn or whistle to activate a warning at a grade ... | 07/09/2002 |
| 6340139 | Highway grade crossing vehicle violation detector In one embodiment, the present invention is an alarm monitor for a railroad grade crossing, the grade crossing having an island activation relay that is activated in response to an approaching train, the alarm monitor including a micropower impulse radar ... | 01/22/2002 |
| 6241197 | Automated rail way crossing A device for monitoring the passage of a train traveling through a rail way crossing, said device including a first and second sensors for sensing the presence of the train on a rail track when the train is in proximity to the sensors, said first and seco... | 06/05/2001 |
| 6116546 | Method for producing a railway crossing warning signal This invention, is a PROCESS, for creating a flashing red light at a railroad-highway grade crossing. This PROCESS is accomplished by the use of two units. The first unit houses a light that is capable of casting a very intense beam out ahead of the train... | 09/12/2000 |
| 5890682 | Railway crossing collision avoidance system With the vehicle anti-collision system of the present invention, road vehicles in the vicinity of a railway crossing are alerted as a train approaches the crossing. A signalling device operating in conjunction with a GPS receiver located in the train emit... | 04/06/1999 |
| 5864304 | Wireless railroad grade crossing warning system A railroad-crossing warning system for protecting pedestrians and motorists from an oncoming train. The warning system has a vehicle detector system for determining whether a vehicle is stuck in an area of the railroad crossing, a train detector system fo... | 01/26/1999 |
| 5762443 | Ground retractable automobile barrier A heavy duty shock absorber system for resisting large forces as may be encountered, for example, in a restraining barrier for a railroad crossing. A concrete bunker with an upstanding concrete-filled steel pipe has a hydraulic, compressive shock absorber... | 06/09/1998 |
| 5735492 | Railroad crossing traffic warning system apparatus and method therefore A railroad crossing traffic warning system for alerting a motorist approaching a railroad crossing to the presence of an oncoming train. The system comprises a series of magnetometer sensor probes buried in the right-of way adjacent to a railroad track at... | 04/07/1998 |
| 5699986 | Railway crossing collision avoidance system With the vehicle anti-collision system of the present invention, road vehicles in the vicinity of a railway crossing are alerted as a train approaches the crossing. A signalling device operating in conjunction with a GPS receiver located in the train emit... | 12/23/1997 |
| 5624203 | Energy absorbing barrier system with crash indication A restraining barrier (30) is positionable across a roadway in a deployed position to define a restraining zone and may be moved vertically to a passive position by first and second transport members (13, 14) slideably mounted to first and second towers (... | 04/29/1997 |
| 5620155 | Railway train signalling system for remotely operating warning devices at crossings and for receiving warning device operational information The present invention provides a signalling system for a railroad locomotive, providing the locomotive with the capability to signal its approach to upcoming railroad crossing signals in order for the crossing signals to activate lights, bells or similar ... | 04/15/1997 |
| 5429329 | Robotic railroad accident prevention vehicle and associated system elements A robotic vehicle (10) is shown with conventional train flanged wheels (11) riding upon common railroad tracks (12). The body (13) of the vehicle encloses a conventional diesel electric power unit (14) with speed characteristics comparable to the train it... | 07/04/1995 |
| 5178349 | Railroad signal system An improved railroad signal system is described in which a train is allowed to approach a block even if a red light is activated for the block. A white numbered light is activated indicating the maximum permissible speed of the train. The system includes ... | 01/12/1993 |
| 4942395 | Railroad grade crossing motorist warning system A three-piece, compact wireless railroad grade crossing motorist warning device comprising: a locomotive mounted transceiver which simultaneously communicates (upon close proximity) with a similar transceiver mounted at railroad grade crossing, and motor ... | 07/17/1990 |
| 4934633 | Crossing control unit Warning lights at a railroad grade crossing are energized at a predetermined flash rate when a train is approaching through the use of an essentially fail-safe solid state crossing controller employing circuitry that is active in creating an off condition... | 06/19/1990 |
| 4931793 | System for providing a warning when vehicles approach a common collision point A system for providing a warning when at least two vehicles, first and second vehicles, are near a common collision point. The system includes closed loop verification between a first vehicle and a common collision point. The system includes a first trans... | 06/05/1990 |
| 4895325 | Railroad gate arm lamp circuit A railroad crossing gate arm electrical lamp system provides two flashing lamps and one continuously operated lamp. Each of the lamps has an internal electrical circuit with the internal electrical circuits being identical for each lamp. This permits the ... | 01/23/1990 |
| 4855737 | Track circuit signalling arrangement A digital signal is used for railway track circuit signalling. A digital signal comprises a pseudo-random binary sequence selected from a set of such sequences. The set is chosen to give the lowest possible cross-correlation between different sequences, t... | 08/08/1989 |
| 4118750 | Vital relay operating circuit There is disclosed a circuit for energizing a vital relay in response to an input signal that is modulated between two frequencies. A discriminator circuit responds to the modulated frequencies and alternately produces an output patented of one polarity a... | 10/03/1978 |
| 4108405 | Light assembly and flasher circuit Generally speaking the present invention contemplates a kit-type railroad crossing signal device having four red, double lens lights attached to prewired arms, a module for flasher control, a battery box, an automatic controlled battery charger, switching... | 08/22/1978 |
| 3963202 | Grade-crossing motorist warning system A railroad-highway grade-crossing warning system is accomplished by control circuitry for synchronizing the flash rates of incandescent and xenon lamps so as to produce a continuously uniform signal pattern which can be rapidly identified and understood b... | 06/15/1976 |
