Class 246/169A - Hot bearing detectors

Subclass of Class 246 - Railway switches and signals
No. of patents: 51
Last issue date: 04/17/2012

Number	Title	Issue Date
8157220	Hot rail wheel bearing detection system and method Hot rail car bearings or wheels are identified by sensing an infrared radiation from the hot surface and determining whether features of the sensed signals are indicative of hot rail car surfaces. The features may include the signals themselves, with distances or co...	04/17/2012
8006942	Hot rail wheel bearing detection A system for detecting a moving hot bearing or wheel of a rail car is provided. The system includes a first comparator to receive input signals representative of radiation emitted by the moving hot rail car bearing or wheel, and to compare the input signals to a thr...	08/30/2011
7946537	Hot rail wheel bearing detection system and method A system for detecting a moving hot bearing or wheel is provided. The system includes a summer for combining an input signal representative of radiation emitted by the moving hot rail car bearing with a feedback signal. The system also includes an integrator to accu...	05/24/2011
7845596	Hot rail wheel bearing detection system and method A system for detecting a hot surface is provided. The system includes a sensor for sensing an infrared radiation radiating from the hot surface and a high pass filter to eliminate low frequency components from the sensor signal. The system also includes an absolute ...	12/07/2010
7222561	Pyromechanical cutting element A pyromechanical cutting element has a housing (2) in which an electrical conductor (3) is arranged, a cutting plunger (5) with a cutting tool (8) to cut through the electrical conductor (3), and pyrotechnic charge (13) to d...	05/29/2007
7184930	Method and device for monitoring status of mechanical equipment and abnormality diagnosing device An abnormality diagnosis system for diagnosing a presence or absence of an abnormality of a bearing unit for a railway vehicle axle, comprises a sensing/processing portion for outputting a signal generated from the bearing unit as an electric signal, a calculating/p...	02/27/2007
7097351	System of monitoring operating conditions of rotating equipment A monitoring system for rotating equipment includes detection of temperature conditions in various areas of the system including motor and pump bearings, mechanical seal environment including seal flush, seal cooler and seal reservoir and process fluid temperature. ...	08/29/2006
7026609	Method and apparatus for time-phased constant IR energy delta source The present invention comprises apparatus for calibrating a railway infrared hot box or hot wheel detector by delivering a desired radiant energy delta to the hot box detector. The apparatus comprises a solid state radiant energy source adapted to be positioned adja...	04/11/2006
7008114	Bearing failure indicator A shaft is disposed along an axis of rotation and a bearing failure indicator, in the form of a disk having protrusions or teeth spaced about its periphery, is provided on the shaft adjacent a bearing supporting a tubular roll for rotation relative to the shaft. Whe...	03/07/2006
6970774	Method and system for compensating for wheel wear on a train A method and system for compensating for wheel wear uses position and/or speed information from an independent positioning system to measure some distance over which the train has traveled. Wheel rotation information and/or distance and speed from a wheel sensor ove...	11/29/2005
6911914	Method and apparatus for detecting hot rail car surfaces In one embodiment of the present invention, an apparatus for detecting a hot rail car surface comprises: an infrared sensor for acquiring an infrared signal from a rail car surface of a rail car and transducing the infrared signal into an electrical signal; a rank f...	06/28/2005
6872945	Apparatus and method for detection of railroad wheel and bearing temperature An apparatus and method is provided for detecting a temperature range or a temperature of a railroad train wheel or bearing wherein infrared radiation radiating from the wheel or bearing of a train traversing a railroad track is indicative of a temperature range of ...	03/29/2005
6813581	Statistical and trend analysis of railroad bearing temperatures A system is provided for tracking the wheel bearing temperatures of a train and selecting those that are statistically determined to be abnormally high, while eliminating from consideration, or otherwise categorizing those high temperature readings which are the res...	11/02/2004
6241196	Casing for a hot box or blocked brake detection scanner The invention relates to a casing for a hot box or blocked brake detection scanner (2) comprising infrared detectors and a heating means, wherein the casing is comprised of a casing lower part and a lid (5), the lid (5) is designed as a chimney top with l...	06/05/2001
6237877	Failed bearing indicator A failed bearing indicator for detecting and indicating an overheated axle journal in a railcar axle bearing. In a preferred embodiment the failed bearing indicator is characterized by an elongated connector chain terminated on each end by a T-shaped conn...	05/29/2001
6184798	Unidirectional telemetry system A telemetry system comprises a plurality of beacons. Each beacon repetitively transmits a packet having a first predetermined time duration. The beacon transmits the packet a first predetermined number of iterations. A monitoring receiver observes for the...	02/06/2001
5677533	Apparatus for detecting abnormally high temperature conditions in the wheels and bearings of moving railroad cars A method and apparatus are disclosed for sensing the temperature of bearings of vehicles traveling along a track, the apparatus including a linear-array infrared detector positioned adjacent to the track. The output from the linear-array infrared detector...	10/14/1997
5478151	Device for detecting excessively heated components or locations in moving objects In a device for detecting excessively heated components or locations in moving objects, in particular in moving rail vehicles, such as bearings, brakes and/or wheel rims, having at least one infrared beam detector (7) and optical devices for representing ...	12/26/1995
5448072	Infrared hot bearing and hot wheel detector A detector apparatus uses two scanners on the right of way for monitoring the wheels of a moving train . The scanners scan the wheels transversely to the tracks along a common axis and generate wheel temperature signals. The signals corresponding to the w...	09/05/1995
5446451	On board hot bearing detector system with fault detection An on-board hot bearing detector system includes a microprocessor and heat sensors mounted on the train cars for sensing the bearing temperatures. Diagnostic circuitry is also provided to monitor the sensors and detect if a sensor is open or short. Additi...	08/29/1995
5438322	Thermal sensor for detection of potential mechanical failures and transmission of temperature warning signals A frequency generating circuit and a cap-freeing mechanism in a bolt are responsive to a longitudinal movement of a piston in response to overheating of an associated bearing. The cap-freeing mechanism transfers a force from the piston to a cap, thereby f...	08/01/1995
5407154	Hot bearing simulator Heaters are used to simulate wheel bearings at specified temperatures. Two heaters are mounted on each side of a railroad test car. The heaters are mounted on the sprung carriage of the car to reduce vibration of the hardware and avoid interfering with wh...	04/18/1995
5397900	Wheel-assembly monitor for diagnosing passing railroad trains A monitor to diagnose wheel assemblies of passing railroad trains, the monitor being characterized in that a cavity is present in and parallel to a measurement tie or in a hollow railroad tie, the cavity housing infrared deflection units and at least one ...	03/14/1995
5356098	Communication system for transmitting RF signals representative of defects or hazards in a railway system having frangible glass activation A communication system for submitting RF signals responsive to the currents of defects or hazards in a railway system wherein a reserve cell ampule containing an electrolyte is disposed in one compartment of a housing and the electronic apparatus transmit...	10/18/1994
5331311	Railroad wheel temperature sensor with infrared array A temperature sensor assembly for monitoring railroad car wheels includes an array of temperature detectors arranged to generate a temperature profile of the wheel. The array may be formed integrally with imaging elements and signal conditioning elements ...	07/19/1994
5315954	Hot bearing alarm The present invention relates to an alarm system suitable for use in warning of overheating in rotatable bearings 4 having first and second bearing portions. The alarm system comprises an alarm signal generator means having a thermally activated engagemen...	05/31/1994
5203278	Temperature warning device A temperature warning device for indicating when a threshold temperature has been exceeded includes a threaded bolt having a bolt head and a bolt body. The bolt head and bolt body have a longitudinal bore defined by a surrounding surface with the bore hav...	04/20/1993
5201483	Process and system for measuring axle and bearing temperatures In a process for measuring axle bearing temperatures in order to locate hot wheels in moving railroad cars with infrared receivers and with an oscillating scanning beam that is oriented transversely to the longitudinal direction of the rail, the analog me...	04/13/1993
5149025	Detection of overheated railroad wheel and axle components Overheated railroad journal bearings, wheels, and other wheel components on a moving or stationary railroad train are detected by amplifying the current signal from an infrared radiation sensor comprising a pytoelectric cell. A reference temperature is se...	09/22/1992
5060890	Detection of overheated railroad wheel and axle components Overheated railroad journal bearings, wheels, and other wheel components on a moving or stationary railroad train are detected by amplifying the current signal from an infrared radiation sensor comprising a pyroelectric cell. A reference temperature is se...	10/29/1991
4974797	Hot bearing simulator A hot bearing simulator is provided for verifying the proper operation of hot box detectors in a dynamic fashion. The hot bearing simulator employs a temperature controller and heater means associated with various axles of a rolling carriage. The heaters ...	12/04/1990
4960251	Determining a reference in a method of detecting overheating of bearings Auto-correlation techniques are employed to monitor railway care wheel bearings. Three successive bearing temperatures A, B and C are measured and those two temperatures that are the closest in value determined. The least of these is used as a reference t...	10/02/1990
4928910	Detection of overheated railroad wheel and axle components Overheated railroad journal bearings, wheels, and wheel components on a moving or stationary railroad train are detected by amplifying the current signal from an infrared radiation sensor comprising a pyroelectric cell. A reference temperature is sensed b...	05/29/1990
4878437	Hot bearing simulator A hot bearing simulator is provided for verifying the proper operation of hot box detectors in a dynamic fashion. The hot bearing simulator employs a temperature controller and heater means associated with various axles of a rolling carriage. The heaters ...	11/07/1989
4812826	Thermal sensor for detection of railroad bearing failures A thermal sensor composed of a standard bolt which has been modified to embody a temperature sensing element and placed into a bearing assembly of a train. This element contains a heat-sensitive wax that at a preset temperature expands causing the motion ...	03/14/1989
4805854	Gate circuitry for hot box detectors A gating circuit and method for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector; stores the data output; senses the st...	02/21/1989
4659043	Railroad hot box detector A hot box detector system is provided wherein heat signals from bearings within a housing are analyzed to determine if the scanned surface of the housing is an inner sidewall surface or an outer sidewall surface. The signals are normalized to account for ...	04/21/1987
4501006	Hot-box signalling devices Hot-box signalling devices are disclosed for indicating the presence of overheated bearings in vehicles such as rail cars. The device includes means defining a closed compartment containing a fluid and pressure-sensitive means communicating with the compa...	02/19/1985
4491290	Train defect detecting and enunciating system A train monitoring system for detecting hot boxes, dragging equipment and the like at the rail site, determining the location on the train of a monitored defect and annunciating the defect and location from a digital automated voice generator to the train...	01/01/1985
4441196	Speed independent system for obtaining preselected numbers of samples from object moving along fixed path A speed independent system is used for obtaining a preselected number of samples from an object moving along a fixed path, such as a railroad train passing through a sensing zone along the section of track. The sensing zone is defined by a pair of wheel s...	04/03/1984

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Class 246/169A - Hot bearing detectors