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| Number | Title | Issue Date |
| 7045981 | Optimized locomotive traction system A high-altitude railroad locomotive adapted for more reliable operation at high altitudes, wherein the high-altitude railroad locomotive includes a semiconductor electric power control component, and wherein due to the high altitude the locomotive would be exposed t... | 05/16/2006 |
| 6947797 | Method and system for diagnosing machine malfunctions A system (830) and method (800) for diagnosing a malfunctioning machine. A fault event is selected (806) together with sequential operating parameter data (808) from a selectively focused time interval about the fault event for evaluation... | 09/20/2005 |
| 6943675 | Locomotive hand brake alarm A hand brake system (40) for a rail vehicle providing a hand brake position alarm (76) before a train is moved with a hand brake not fully released. A switch (56) detects the position of a hand brake drive chain (18) to provide a brake en... | 09/13/2005 |
| 6926468 | Portable flotation platform for shallow bodies of water A portable flotation platform is disclosed for use in supporting a load of equipment, hunting dogs, or personnel above the level of a body of water. The platform includes a deck constructed to be of an overall density less than that of water and sized so as to suppo... | 08/09/2005 |
| 6893058 | Railway train friction management and control system and method A system and method for friction management for managing and controlling an application of a friction modifying agent to an area of contact between a railway wheel and a railway rail over which the wheel is traversing to selectively modify the coefficient of frictio... | 05/17/2005 |
| 6885854 | Terminal diversity for off-board railway communications An off-board communications system (50) for railway communications to and from a locomotive (10) and a central station (18). A radio (56) utilizes multiple antennas (52, 54) to broadcast a transmission signal (62, 64) over p... | 04/26/2005 |
| 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 |
| 6854563 | Wayside rail lubrication apparatus and method A wayside lubrication apparatus (10) for applying a lubricant (26) to a second position (36) of a rail (12) in response to the head of a train (14) being proximate a first position (20) of the rail. The distance (D) between ... | 02/15/2005 |
| 6850869 | System and method for remote inbound vehicle inspection A system and method for reducing the shop time of a vehicle, e.g., a locomotive, at a maintenance facility by obtaining onboard systems parameter data during a period when the vehicle is inbound to the maintenance facility for required periodic scheduled maintenance... | 02/01/2005 |
| 6848426 | Adaptive fuel control for an internal combustion engine An adaptive fuel limit function (52) for protecting an internal combustion engine. The adaptive fuel limit function is a learning function responsive to trends in an engine performance parameter such as compensated fuel consumption per unit of power produced ... | 02/01/2005 |
| 6837322 | Ventilation system for electric-drive vehicle A centrifugal blower (70) for an electric-drive vehicle (71) having three independent air outlets (82, 86, 90) receiving air from a single impeller (78). A first radial airflow (84) provides cooling air to an alternator (106... | 01/04/2005 |
| 6828746 | Method and system using traction inverter for locked axle detection A method and system for detecting the occurrence of an actual locked condition in a locomotive system having a locomotive operating in an isolated mode of operation. The locomotive has a plurality of AC traction motors for propelling the locomotive system during nor... | 12/07/2004 |
| 6813583 | Wheelspeed estimation system and method A system and method for estimating the wheel speed of a vehicle propelled by DC motors mechanically coupled to at least one wheel on the vehicle so as to rotate said one or more wheel. At least one current detector is configured to measure armature and field current... | 11/02/2004 |
| 6763290 | Cab signal quality detecting and reporting system and method A system and method for railroad cab signal quality detection and reporting for use in connection with a railroad cab signaling system in which a status signal is carried on a railroad rail. The status signal has a cab signal parameter that is indicative of a status... | 07/13/2004 |
| 6749043 | Locomotive brake resistor cooling apparatus A cooling apparatus (27) for a locomotive dynamic brake resistor grid stack (22) including a flow directing diffuser (24). The flow directing diffuser includes at least one turning vane member (26) disposed at an angle to the flow stream ... | 06/15/2004 |
| 6691957 | Control and method for optimizing the operation of two or more locomotives of a consist A system and method for controlling, a response to an operator, a consist of at least first and second locomotives having discrete operating modes. The system and method comprises an operator control, a first controller, a second controller, and a communi... | 02/17/2004 |
| 6671591 | System and method for monitoring locomotive operation A locomotive monitoring system defines several mutually exclusive operating states for a locomotive. The amount of time the locomotive operates in each state is preferably determined and recorded. This recorded information can then be evaluated with a vie... | 12/30/2003 |
| 6650993 | Automatic start/stop system and method for locomotive engines An automatic start/stop system for locomotive engines which takes into account operator needs and concerns by enabling operators to locally prevent automatic shutdowns of their locomotives without disabling their AESS systems. Thus, operators can maintain... | 11/18/2003 |
| 6615118 | Hybrid energy power management system and method An energy management system for use with off-highway vehicles, including locomotives, that traverse a known course. A processor determines power storage and transfer parameters, including data indicative of present and future track profile information. Th... | 09/02/2003 |
| 6612245 | Locomotive energy tender An energy tender vehicle for use in connection with a hybrid energy locomotive system having an energy storage and regeneration system. The energy storage and regeneration system captures dynamic braking energy, excess motor energy, and externally supplie... | 09/02/2003 |
| 6581464 | Traction motor speed sensor support arrangement A traction motor speed sensor support arrangement (30). A proximity sensor (34) is mounted within a housing (32) having a sensor support portion (44) cantilevered from a base portion (40). Dowel pins (60) extending from the base portion (40) position the ... | 06/24/2003 |
| 6407465 | Methods and system for generating electrical power from a pressurized fluid source A pressurized fluid system provides electrical power to a load and includes a fluid motor, a generator, an energy storage device and a controller. The system supplies fluid to the fluid motor, which provides a generator with power producing a voltage used... | 06/18/2002 |
| 6401015 | Distributed power and electronic air brake control system for a train and associated methods A train control system includes a plurality of control subsystems for installation in respective locomotives. At least one of the control subsystems is configurable as a lead control subsystem, and at least one other control subsystem is configurable as a... | 06/04/2002 |
| 6377877 | Method of determining railyard status using locomotive location A system for determining the status of a railyard includes a locomotive itinerary, a computer configured with a comparator algorithm used to compare a locomotive location to the locomotive itinerary, and at least one manager console configured to communic... | 04/23/2002 |
| 6373333 | Vital "AND" gate apparatus and method A method for performing an "AND" operation on two independent inputs in a fail-safe manner includes cascading two charge pumps to output a condition signal representing the "AND'ed" state of the inputs. Each independent input has an active state asserted ... | 04/16/2002 |
| 6302495 | Railway car braking system including piezoelectric pilot valve and associated methods A railway car brake system includes a pneumatic brake cylinder and a relay valve for controlling pressure in the brake cylinder. The relay valve is responsive to a pilot pressure which is generated by a pilot valve connected to the relay valve, the pilot ... | 10/16/2001 |
| 6243628 | System and method for predicting impending failures in a locomotive A computer-based method and system for predicting impending failures in a system, such as a locomotive, aircraft, power plant, etc., having a plurality of subsystems is provided. The method allows for storing log data indicative of respective incidents or... | 06/05/2001 |
| 6080312 | Downhole cyclonic separator assembly Downhole apparatus for separation of oil from oily water or water from oil having an internal chamber continuously flooded with production fluids from a well, one or more hydrocyclonic separators for separating the production fluid into a stream enriched ... | 06/27/2000 |
| 4764314 | 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 ... | 08/16/1988 |
| 4750573 | Drill bit having a flush-out port A roller cutter drill bit detachably secured to a drill string for delivering drilling fluid under pressure to the bit, comprising a plurality of bearing journals at its lower end and passaging extending down in the bit body to each of the journals for fl... | 06/14/1988 |
| 4749053 | Drill bit having a thrust bearing heat sink A roller cutter drill bit adapted to drill bores in the earth comprising a bit body of steel having a plurality of bearing journals at its lower end, and a plurality of roller cutters, each having a recess therein receiving one of the journals. A radial b... | 06/07/1988 |
| 4647215 | Ragless propeller draft tube mixer A draft tube mixer is disclosed particularly adapted for use with digestion processes and apparatus wherein a vertical shaft (13) is driven by motor (15) through a suitable drive (14) to rotate a ragless propeller (12). The propeller (12) has a series of ... | 03/03/1987 |
| 4588559 | Lime slaking system including a cyclone and classifier for separating calcium hydroxide and grit particles from a slurry thereof A lime slaking system for hydration of lime and removal of unwanted grit, particularly for formation of reactive slaked lime to be used in SO2 scrubbing of effluent gases, comprising a series of slaking vessels (10, 12) for reacting CaO and wat... | 05/13/1986 |
| 4575256 | Ragless propeller draft tube mixer A draft tube mixer is disclosed particularly adapted for use with digestion processes and apparatus wherein a vertical shaft (13) is driven by motor (15) through a suitable drive (14) to rotate a ragless propeller (12). The propeller (12) has a series of ... | 03/11/1986 |
| 4446935 | Intermittent high-drag oil well drilling bit Methods and apparatus are disclosed for the rapid and efficient drilling of oil well and other types of bore holes through tough abrasive underground formations, which methods and apparatus utilize high drag intermittent contact and cooling techniques to ... | 05/08/1984 |
| 4444281 | Combination drag and roller cutter drill bit A rotary drill bit comprising a bit body having at least one depending leg at its lower end and at least one roller cutter rotatably mounted on the leg. The roller cutter comprises a frustoconical roller cutter body and a plurality of cutting elements pro... | 04/24/1984 |
| 4420050 | Oil well drilling bit An oil well drilling bit is disclosed of the type utilizing hard metal inserts in the rolling cutters wherein each row of inserts on each cutter is located thereon in a sinusoidal or varying pattern rather than the strictly circumferential pattern of the ... | 12/13/1983 |
