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| Number | Title | Issue Date |
| D570718 | Portable hand-held test instrument | 06/10/2008 |
| 7013239 | Apparatus and method for performance and fault data analysis An analysis scheduler for scheduling the automatic processing of performance data through a plurality of analysis tools is disclosed. Performance data provided to some of the tools by the analysis scheduler may be specified to be within a predetermined (but variable... | 03/14/2006 |
| 6959235 | Diagnosis and repair system and method A diagnosis and repair recommendation system for a railroad locomotive is disclosed. The system uses generalized repair recommendations and instantiates them to a specific repair process for a unique road number locomotive. In addition to repair steps to be executed... | 10/25/2005 |
| 6892701 | Method and apparatus for controlling locomotive smoke emissions during transient operation A method and apparatus for reducing the smoke emissions of a railroad locomotive during throttle notch changes. For certain throttle notch increases the present invention advances the engine timing angle and controls application of the load at the new throttle notch... | 05/17/2005 |
| 6881951 | Time phased constant IR energy delta source Apparatus for delivering a constant radiant energy delta to calibrate a railway hot box detector. A wheel including an aperture is rotatingly supported within the apparatus. A temperature sensor senses the temperature of the wheel, and a radiant energy source is mou... | 04/19/2005 |
| 6873962 | Train corridor scheduling process A process for scheduling the travel of trains on a rail corridor. The rail corridor includes a plurality of siding tracks onto which trains can be sided when a meet or pass occurs with another train on the corridor. A gradient search process is used with a cost func... | 03/29/2005 |
| 6866347 | Locomotive brake pipe valve cut-out failure detection and correction In a distributed power railroad train, an apparatus for equalizing the equalizing reservoir pressure in the remote power unit and the brake pipe pressure. With these pressures equal, the remote unit cannot charge the brake pipe while the lead unit attempts to vent t... | 03/15/2005 |
| 6847187 | Detection of loss of cooling air to traction motors A thermal protection apparatus for an AC traction motor including a stator, a rotor, a blower fan and an inverter includes a method and apparatus for predicting the motor temperature assuming that the blower is operational. The method and apparatus also determines a... | 01/25/2005 |
| 6824226 | Adaptive brake valve cutout scheme during distributed power communication loss In a distributed power railroad train, an apparatus for equalizing the equalizing reservoir pressure in the remote power unit and the brake pipe pressure in response to airflow into the brake pipe from the remote locomotive. With these pressures equal, the remote un... | 11/30/2004 |
| 6823835 | Method and apparatus for reducing locomotive diesel engine smoke using skip firing A diesel engine, having a plurality of individually controllable fuel injected cylinders, is operated in a skip firing mode to reduce smoke emissions during low power operation. The system senses certain identified engine operating parameters and when these paramete... | 11/30/2004 |
| 6795935 | Diagnosis of faults in a complex system A method and apparatus for chronologically combining fault data, repair data, and operational parameters for a railroad locomotive. Generally, this data is collected and stored in separate databases. The present invention teaches combining the data so that an ordere... | 09/21/2004 |
| 6725134 | Control strategy for diesel engine auxiliary loads to reduce emissions during engine power level changes A diesel locomotive includes a number of auxiliary subsystems operating in conjunction with the locomotive diesel engine and deriving their energy, from the diesel engine. Included among the subsystems are various cooling systems, the battery charging system, and th... | 04/20/2004 |
| 6718238 | Call recovery process and apparatus for a remote monitoring system An apparatus and method for re-synchronizing a communications link between an on-board monitor located aboard a vehicle and a remote site. The occurrence of certain events may render the establishment of a communication link between the on-board monitor and the remo... | 04/06/2004 |
| 6708038 | Vehicle communications system A locomotive communication system for communicating between a locomotive and a fixed site. A communication system commissioning process is utilized to ensure that the locomotive phone number and locomotive road number are paired at the fixed site so that data downlo... | 03/16/2004 |
| 6658330 | Method and system for upgrading software for controlling locomotives A method of upgrading control software on a first locomotive. The first locomotive includes a first locomotive interface. A first computer is coupled to the first locomotive interface, and a first communicator is coupled to the first computer. The first c... | 12/02/2003 |
| 6637703 | Yard tracking system A method for identifying and determining the position of rolling stock within a railyard using a system that includes an AEI reader, a plurality of elevated electronic imaging devices and a tracking computer. The rolling stock includes a plurality of rail... | 10/28/2003 |
| 6490523 | Methods and apparatus for locomotive tracking A method and apparatus for managing locomotives is provided. The apparatus includes an on-board tracking system including a locomotive interface, a computer, a GPS receiver, and a communicator, the computer programmed to determine a position of the locomo... | 12/03/2002 |
| 6462606 | Circuit and method for input to failsafe "AND" gate A method for generating signals for input to a vital "AND" gate includes generating a plurality of independent signals for input to the "AND" gate and checking that each of the signals has a frequency and duty cycle within predetermined ranges. Upon a det... | 10/08/2002 |
| 6459965 | Method for advanced communication-based vehicle control A method is provided for controlling movement of a plurality of vehicles over a guideway partitioned into a plurality of guideway blocks. The method uses a control system including an onboard computer (OBC) located on board each vehicle, at least one serv... | 10/01/2002 |
| 6456937 | Methods and apparatus for locomotive tracking In one aspect, the present invention relates to identifying locomotive consists within train consists, and determining the order of the locomotives within the identified locomotive consists. By identifying locomotive consists and the order of locomotives ... | 09/24/2002 |
| 6443538 | Feed valve and reference pressure enhancement A method to facilitate reducing delays in braking applications in a train using a system. The system includes at least one computer for executing brake control functions of the train and a brake pipe that extends along a length of the train for supplying ... | 09/03/2002 |
| 6439174 | Crankcase ventilation system A crankcase ventilation system for a turbocharger internal combustion engine comprises an internal combustion engine having a crankcase and an exhaust stack, a turbocharger for providing a supply of pressurized air to the engine, eductor tubing connected ... | 08/27/2002 |
| 6435623 | Valve assembly for electrically controlled pneumatic brakes A method for providing brake control for a rail car having a brake cylinder, a reservoir, and an exhaust vent includes steps of fluidly interconnecting four electrically controlled valves between a train brake pipe, the brake cylinder, the reservoir, and ... | 08/20/2002 |
| 6421587 | Methods and apparatus for locomotive consist determination A method for identifying locomotive consists within train consists determines an order and orientation of the locomotives within the identified locomotive consists. An on-board tracking system is mounted to each locomotive and includes locomotive interfac... | 07/16/2002 |
| 6405127 | Method for determining stationary locomotive location in a railyard A system for determining a locomotive within a railyard includes a base station, a base station receiver that receives location data pertaining to the base station location, a mobile receiver that receives location data pertaining to the location of locom... | 06/11/2002 |
| 6392553 | Signal interface module An apparatus and method are provided for interfacing railway controllers with light units, such as LED light unit arrays, to shunt and/or disable test signals not traditionally intended to test non-incandescent light unit arrays.... | 05/21/2002 |
| 6375276 | Railway brake system including enhanced pneumatic brake signal detection and associated methods A railway brake system for a train includes a brake pipe extending along the train, a lead unit controller generating a pneumatic control signal propagated along the brake pipe, and at least one remote unit controller. The remote unit controller preferabl... | 04/23/2002 |
| 6343236 | Method and system for analyzing fault log data for diagnostics The present invention discloses a system and method for analyzing fault log data from a malfunctioning machine. The system comprises a processor for receiving new fault log data comprising a plurality of faults from the malfunctioning machine and selectin... | 01/29/2002 |
| 6291987 | Method and system for detecting incipient failures in a power inverter A method and system for predicting malfunctions in a power inverter having one or more legs connected between first and second voltage buses is provided. Each leg has respective first and second controllable switches coupled in series to one another. The ... | 09/18/2001 |
| 6276281 | Method and apparatus for control of a rail contaminant cleaning system An apparatus and method for clearing a railroad track of contaminants, such as snow, including a control system for providing control signals to a compressed air system mounted on a locomotive based on a plurality of predetermined conditions. A learning s... | 08/21/2001 |
| 5965857 | Flotation cell row A flotation cell row including a row of cells through which, in use, a process liquid flows in turn, including a first bank of cells having a last cell 4 being the most downstream cell and a second bank of cells having a first cell 5 being the most upstre... | 10/12/1999 |
| 5948276 | Plastic separation method The present invention pertains to the separation of mixtures of plastics, contaminated with, among other things, mineral heavy materials such as e.g. sand or metal refuse. Separation occurs according to density in a separating liquid in the centrifugal fi... | 09/07/1999 |
| 5913767 | Worm centrifuge with centrifugal valve A worm centrifuge for separating solids/liquid mixtures is disclosed for overcoming the problems during start-up and shut-down processes that occur when quantity of a liquid is located or remains in the centrifuge drum, particularly the problem of the eme... | 06/22/1999 |
| 5337618 | Load sensing assembly A load sensing assembly adapted to measure the weight of loads which act with both vertical and horizontal direction force components by resolving such force components solely into a vertical downward force component representative of the weight of the lo... | 08/16/1994 |
| 5147277 | Power-efficient liquid-solid separating centrifuge A power-efficient liquid-solid separating centrifuge is disclosed which has power recovery apparatus on the bowl-head of a rotary bowl including a plurality of liquid flow passageways in fluid communication with transfer ports in the bowlhead of the rotar... | 09/15/1992 |
| 5111896 | Belt conveyor weighbridge A weighbridge for a conveyor belt assembly for measuring the weight of a section of conveyor belt carrying a load of material to be transported along the conveyor belt assembly is disclosed. The conveyor belt assembly has frame members positioned longitud... | 05/12/1992 |
| 4848749 | Diffuser for aeration basin A diffuser for introducing gas in bubbles into liquid held in an aeration tank comprising a body member having a backing surface and passaging extending from a gas inlet to an outlet at the backing surface, and a flexible, gas permeable membrane covering ... | 07/18/1989 |
| 4751002 | Cable supported rake arm thickener Support of rake arms in a thickener is by sets of separate support cables and separate torque cables extending from outboard-of-the-center positions of rotating trusses extending radially of the sedimentation tank. The sets of support cables are attached ... | 06/14/1988 |
| 4744699 | Single-pass roof bolt and apparatus and method for installation A single-pass roof bolt adapted to drill and to be secured in a bore in the roof of a mine for supporting the roof comprising a tubular body open at one end thereof, constituting the inner end of the bolt, and a cutting structure at the opposite end of th... | 05/17/1988 |
| 4737272 | Froth flotation method and apparatus A method for improving separation of the flotable phase from the non-flotable phase of a slurry of particulate material in a froth flotation machine comprising a tank, an upper outlet port for discharge of the flotable phase, and a mechanism for deliverin... | 04/12/1988 |
