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Match Document Document Title
7618010 Method, computer software code, and system for determining a train direction at a railroad crossing  
In a railroad crossing warning system having an electronic transmitter located on a first side of a road crossing connected across both railway rails, a first electronic receiver on the first side...
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...
7554457 System and method for sensing misalignment of a railroad signaling system  
A system is provided for sensing misalignment of a railroad signaling system. The railroad signaling system includes at least one railroad signal coupled to at least one elongated member adjacent...
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...
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...
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...
7075427 Traffic warning system  
The present invention is directed to a train detection system for detecting the velocity, presence, and direction of a railroad car which may be utilized in existing railroad crossing...
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...
6836221 Railroad advance warning system  
A vehicle contained warning system and method for warning the occupants of a motor vehicle approaching a railway grade crossing at which there is installed a railway grade crossing warning system...
6813860 Crossing gate repair kit and method  
A railroad crossing gate is repaired by lowering the crossing gate mechanism with a lever. The end of the lever can contain a conical opening mating with the conical pivot pin on the gate mechanism.
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...
6369704 Method and apparatus for light outage detection  
One embodiment of the present invention is a system for monitoring failure of a signal having lighting configured to indicate a predetermined alarm condition. The system includes a...
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...
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...
6195020 Vehicle presence detection system  
A system and method which can detect the presence of a vehicle within the protected area of a four gate railroad crossing, determine its location and direction it is moving in, and open an...
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...
6142426 Crossing gate counterweight adjustment  
A screw-threaded counterweight adjustment apparatus is journaled in end journals provided with brackets for attachment to the interior of a railroad crossing gate arm casing preferably by jam-type...
6105905 Railway gate system  
A railway gate system comprising a railway station having an elevated platform area for passengers to stand and a recessed area with a track and a train movable therealong. A gate has a continuous...
6081769 Method and apparatus for determining the overall length of a train  
A method and apparatus for determining the length of a train utilizing received signal such as a reference signal from a global positioning system or the like is disclosed. A first receiver...
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...
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...
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...
5852350 Railroad crossing gate control system including a separate maintenance relay  
A railroad crossing gate electrical control system for moving a crossing gate in up and down directions also provides for raising the gate counterweights in a failure mode. The control system...
5834914 Railroad crossing gate mechanism control system  
A railroad crossing gate electrical control system for moving a crossing gate in up and down directions and providing snubbing protection to gate movement in failure modes includes an electrical...
5747954 Highway crossing guard mechanism controller  
A highway crossing gate control circuit is provided which minimizes the "pumping" oscillation of a highway crossing gate arm which is driven up by a permanent magnet motor. A preferred embodiment...
5682150 Remote control train warning apparatus  
A train warning device has a ladder frame with barrier sign hingedly mounted for movement by an electric motor between positions folded against the frame between the tracks and upstanding...
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...
5022613 AC and battery backup supply for a railroad crossing gate  
A crossing lights controller for effecting operation of the crossing lights during normal train operating conditions and during a controller failure mode includes a train sensing input, a lights...
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...
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...
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...
4868538 Random signature island circuit  
An island circuit detects the presence of a train on a crossing island, and, in response, de-energizes a normally energized relay to activate a warning. A random signature signal is generated and...
4816804 School bus stop sign control apparatus  
The apparatus is provided with a unidirectional motor operatively coupled to the hinged sign through an eccentric drive by a link arm which incorporates a pre-loaded helical compression spring to...
4784356 Variable placement interchangeable lamp system  
A variable placement lamp system for use with a supporting member is disclosed which includes a plurality of lamp housings (40) each including a channel for receiving an upper edge of a supporting...
4703303 Solid state railroad lights/gate controller  
A railroad crossing lights/gate controller for effecting operation of the crossing lights and lowering of the crossing gate during normal train operating conditions and during a gate controller...
4666108 Extensible railroad grade crossing gate arm  
A railroad crossing gate (20) is disclosed having a novel crossing arm (24) which includes a first longitudinal arm (26) member with a telescopically inserted second longitudinal arm member (28)....
4581700 Processing system for grade crossing warning  
A railroad train moving along an approach to a grade crossing (or other location of interest) is detected by apparatus that is responsive to the change in effective track impedance caused by the...
4469298 Axle sensor  
A sensor arrangement is disclosed for detecting the presence of an axle of a rail vehicle in a short length of a track. The arrangement includes a bridge coupled to and including resistances of the...
4365777 Train approach detector  
A train approach detector uses frequencies in the audio spectrum to activate grade crossing protection devices in advance of and during the presence of railroad trains at grade crossings. The...
4324376 Railroad highway crossing warning system  
A railroad highway crossing warning system including pickup coils for sensing current flowing in the track rails of an approach zone, a circuit for sensing the voltage across the track rails,...
4307860 Railroad grade crossing constant warning protection system  
A train detection system for protecting a railroad highway crossing having an a.c. transmitter center-feeding voltage signals into the track rails and having a receiver including at least a pair of...
4306694 Dual signal frequency motion monitor and broken rail detector  
A highway crossing warning system for monitoring the motion and predicting the time of arrival of an approaching train at the highway crossing and for detecting the presence of a broken rail in the...
4251041 Multiplexing means for motion detectors at grade crossings  
At a railroad crossing, a single motion detection unit is selectively coupled to an occupied track in such manner that safe, effective and efficient control is obtained over the crossing alarm...
4172576 Highway crossing system with motion detecting apparatus  
A highway crossing warning system includes a motion detector transmitter and receiver respectively coupled to the track rails adjacent the highway crossing for detecting motion of an approaching...
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...
4090685 Grade crossing assembly  
This disclosure relates to a railroad-highway crossing gate and signal arrangement having an elongated aluminum gate arm movable between a vertical clear position and a horizontal traffic blocking...
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...
4067523 Laterally adjustable adapter bracket for a grade crossing gate and signal assembly  
An adjustable adapter bracket for a railroad-highway crossing gate and signal installation for permitting the elongated gate arm to be shifted laterally to avoid interference with overhead...
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...
3994457 Crossing gate  
A railway pivotal crossing gate is made with a modular construction to facilitate repair of the gate. The gate modules are preferably of alternating colors along the length of the gate and have...
Matches 1 - 50 out of 88 1 2 >