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| Number | Title | Issue Date |
| 7575202 | Apparatus and methods for providing relatively constant warning time at highway-rail crossings Apparatus, methods and a communication system for providing relatively constant warning time at a rail grade crossing for trains with prediction of the approach of a train from a remote controller via rail-based communications to a crossing controller. A first commu... | 08/18/2009 |
| 7384017 | Retractable gate A retractable gate comprising a movable arm gate having multiple sections which nest or telescope into each other when parked (e.g. upright), and extends into a full length blocking position as it is deployed. The gate arm sections are deployed by the movement of on... | 06/10/2008 |
| 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 |
| 7196636 | Railroad crossing warning system A highway/railroad crossing detection and warning system which uses sets of Doppler radar transmitters and receivers to detect the approach of a train coming from either direction toward a highway crossing. The Doppler radar sets are located an extended distance fro... | 03/27/2007 |
| 7096625 | Method of displaying advertising on a turnstile A method of advertising includes providing a transparent, tubular sleeve within which a sheet carrying advertising is placed and removably attaching the tubular sleeve to one of the arms of a turnstile. ... | 08/29/2006 |
| 7096096 | Method and system for automatically locating end of train devices An end of train unit includes a positioning system such as a GPS receiver and is configured to transmit a message including the EOT unit's location when the EOT unit detects a loss of air pipe pressure and/or it is tipped over and/or a low battery condition is detec... | 08/22/2006 |
| 7082707 | Support truss for a messaging sign A support truss for a messaging sign comprising an elevated box truss which extends over a roadway and which has its opposite ends secured to upstanding supports. The box truss is comprised of a plurality of box truss sections secured to one another in an end-to-end... | 08/01/2006 |
| 6980894 | Method of managing interference during delay recovery on a train system The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to p... | 12/27/2005 |
| 6903658 | Method and system for ensuring that a train operator remains alert during operation of the train A train control system requires a train operator to enter signal aspect information at each wayside signal position on a railroad and stops the train if the operator fails to enter aspect information without communicating with the wayside signal device to verify tha... | 06/07/2005 |
| 6824110 | Method and system for automatically activating a warning device on a train A method and system for automatically activating a train warning device that uses a positioning system such as a global positioning system (GPS) receiver or an inertial navigation system (INS) to determine the train's position. The system further includes a database... | 11/30/2004 |
| 6471162 | Railroad maintenance-of-way personnel warning system apparatus and method therefor A railroad maintenance-of-way personnel warning system and method therefor provides advanced detecting and warning of oncoming trains encroaching the construction area. Magnetometer sensors detect an oncoming train whereby a warning signal is transmitted ... | 10/29/2002 |
| 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 |
| 6386486 | Method and apparatus for indicating the presence of a train at a railroad crossing A method and apparatus for indicating the presence of one or more trains near a railroad crossing having at least two train tracks. The signaling system has a first sensor for detecting the presence of the first train near or approaching the railroad cros... | 05/14/2002 |
| 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 |
| 6267332 | Railroad safety system A railroad safety system for use at an intersection of a roadway and a railroad track, that comprises a sensor for detecting a hazardous situation and a voice alarm for giving a voice command to warm drivers and pedestrians of the hazardous situation.... | 07/31/2001 |
| 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 |
| 6179252 | Intelligent rail crossing control system and train tracking system An intelligent intersection control system features an internal controller that receives digital messages containing detailed information items concerning, for example, the direction, speed, length and identity of a train. The controller generates appropr... | 01/30/2001 |
| 6158696 | Railroad accident prevention system with ground-retractable vehicle barrier An apparatus that prevents motorists from crossing railroad tracks, when the warning gates are down during approaching of a train consists, of a plurality of tire-piercing cogs which are retracted from the ground when the railroad crossing gate is closed.... | 12/12/2000 |
| 6157322 | Automated railroad crossing warning system An automated railroad crossing warning system includes a housing mounted at the intersection of a railroad track and a roadway with directional horns oriented in opposite directions to direct horn blasts along the roadway. A light is mounted on the housin... | 12/05/2000 |
| 5954299 | 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... | 09/21/1999 |
| 5924651 | Tactile and audible warning system for railroad workers A train warning system and method for warning personnel in proximity to railroad tracks of an approaching train includes a train sensor operable with the railroad tracks for detecting passage of a train over the railroad tracks at a given location. The tr... | 07/20/1999 |
| 5868360 | Vehicle presence detection system A passive magnetic detector is provided at ground level or buried below ground level in between rails of a railroad trace at a distance from the level crossing for detecting magnetic field disturbances caused by ferromagnetic objects passing overhead on t... | 02/09/1999 |
| 5554982 | Wireless train proximity alert system A wireless train proximity alert system provides a constant warning signal to warn vehicles approaching a train crossing when a train is also approaching the crossing. The system includes a transceiver, positioned on the train itself or at the side of the... | 09/10/1996 |
| 4073453 | Railroad warning signal device A warning device visually enhances the signalling of a dangerous situation such as an approaching train at a railroad crossing. The warning device includes oppositely rotating rims to which light reflecting discs are attached in surrounding relation to hu... | 02/14/1978 |
| 4057208 | Slide cam assembly for railroad-crossing gate mechanism A motor controller for use in railway-crossing signal-gate mechanisms is provided herein. The controller is of a cam type which includes a cam assembly having a movable cam insert that cooperates with a cam follower and switch assembly. The switch control... | 11/08/1977 |
| 3964704 | Operating mechanism for railroad crossing gate The operating mechanism of a railroad crossing gate employs a variable mechanical advantage connection to transmit force from the drive motor to the gate member to raise and lower the same. The main shaft of the mechanism serves as a mount for the gate me... | 06/22/1976 |
| 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 |
| 3952978 | Cantilever arm signal assembly A traffic crossing signal mast for railroad-highway grade crossings incorporates a sturdy cantilever arm extending over the highway and supporting a maintenance catwalk. A short, horizontal jury mast at the end of the cantilever arm is pivotable about its... | 04/27/1976 |
