PROGRESS RAIL SERVICES CORP. Patent applications |
Patent application number | Title | Published |
20160102643 | SYSTEM FOR STARTING POWER SYSTEMS WITH MULTIPLE GENERATOR UNITS - A control system and strategy for starting power systems having a plurality of power modules. For example, a multi-engine generator set switcher locomotive has three power modules each of which have an engine associated therewith. Upon receiving a command from the locomotive indicating to the engine control module to start at least one power module, i.e., engine, the control strategy determines whether to start the engine with an air or electric start. The control strategy starts only a single engine at a time, thereby avoiding overloading the airflow capacity of the compressed air source or the electric power capacity of the electric source. The control strategy also implements a command to start ever engine with an air starter, if possible, to preserve the electric starter motor and the electric power capacity of the electric source. | 04-14-2016 |
20150082630 | LOCOMOTIVE POSITIVE POWER BUS CONTACTOR METHOD OF ASSEMBLY - A method of manufacturing a power contactor from an existing contactor having a magnetic amplifier that comprises a blowout coil and a ferromagnetic core, and an arc chute for extinguishing an arc generated by opening the existing contactor under a current load is disclosed. The method includes removing a bolt assembly from the existing contactor and at least one side plate from the existing contactor. The method also includes removing the ferromagnetic core from the existing contactor. | 03-26-2015 |
20140252999 | CONTINUOUSLY VARIABLE DYNAMIC BRAKE FOR A LOCOMOTIVE - This disclosure is directed to a traction motor drive system. The traction motor drive system may include a field winding subsystem comprising a field winding associated with a traction motor. The traction motor drive system may also include an armature subsystem arranged in parallel with the field winding subsystem. The armature subsystem may include an armature having first and second armature terminals and a grid resistor selectively electrically coupled in series with the armature. The armature subsystem may also include an armature chopper arranged in parallel with the grid resistor and electrically coupled in series with the armature. The armature chopper may be configured, when the grid resistor is electrically coupled to the armature, to conditionally conduct current to the armature. | 09-11-2014 |
20140240874 | TRACTION MOTOR DRIVE SYSTEM FOR A LOCOMOTIVE - A traction motor drive system may include a plurality of armatures arranged in parallel with each other. The traction motor drive system may also include a plurality of field circuits arranged in series with one another, where each field circuit is associated with a respective one of the armatures. The plurality of field circuits may be arranged in parallel with the plurality of armatures. The traction motor drive system may also include a field isolation system. The field isolation system may include a shunt circuit associated with at least one of the field circuits. The shunt circuit may have a first and second shunt terminal. The field isolation system may also include a first field switch arranged in series with the plurality of field circuits. The first field switch may be configured to switch between the first shunt terminal of the shunt circuit and a first field terminal of at least one of the field circuits. The field system may also include a second field switch, arranged in series with the plurality of field circuits. The second field switch may be configured to switch between the second shunt terminal of the shunt circuit and a second field terminal of at least one of the field circuits. | 08-28-2014 |
20140130762 | SYSTEM FOR STARTING POWER SYSTEMS WITH MULTIPLE GENERATOR UNITS - A control system and strategy for starting power systems having a plurality of power modules. For example, a multi-engine generator set switcher locomotive has three power modules each of which have an engine associated therewith. Upon receiving a command from the locomotive indicating to the engine control module to start at least one power module, i.e., engine, the control strategy determines whether to start the engine with an air or electric start. The control strategy starts only a single engine at a time, thereby avoiding overloading the airflow capacity of the compressed air source or the electric power capacity of the electric source. The control strategy also implements a command to start ever engine with an air starter, if possible, to preserve the electric starter motor and the electric power capacity of the electric source. | 05-15-2014 |
20130002230 | AC LOAD SOFT START FOR VARIABLE-FREQUENCY POWER SOURCE - Systems and methods for providing variable-frequency soft start of an AC load are disclosed. In one exemplary embodiment, a method for starting an alternating current (AC) load with a variable-frequency AC power output includes receiving an indication of a duty cycle for chopping the AC power output during starting of the AC load, and determining a frequency of the AC power output. The method further includes chopping the AC power output at the duty cycle, based on the determined frequency of the AC power output, and providing the chopped AC power output to start the AC load. | 01-03-2013 |
20100170414 | Dual Engine Locomotive - A diesel-electric locomotive has two separate engine systems, including a large engine system and a small engine system. The power output from the separate engine systems may be combined to power the locomotive's traction motors. When the locomotive requires low power output for propulsion, only the small engine system is used to power the traction motors. When the locomotive requires higher power output, only the large engine system is used to power the traction motors. When the locomotive requires maximum power output, the small and the large engine system may both be used and their power output combined to power the traction motors. Also, a unique control strategy maintains a smooth delivery of power to the traction motors in the event that one engine shuts down or starts as a result of a change in the commanded power output of the locomotive. | 07-08-2010 |
20100108823 | SYSTEM, METHOD AND APPARATUS FOR RAILROAD GATE FLASHER ASSEMBLY HAVING A SEALED, RODENT-PROOF CONNECTION BETWEEN IN-PLACE FOUNDATION AND UTILITY MAST - A railroad crossing gate flasher assembly has a sealed, rodent-proof connection for electrical cables that pass from the foundation to a junction box. A clearance between the bottom of the junction box and the top of the foundation is sealed with a plate to prevent rodents from accessing the cables. The seal plate is mounted to the bolts that extend from the foundation and is leveled after it is inserted onto the bolts. The junction box is lowered onto the seal plate and attached to the same bolts so that the junction box also is level. The seal plate has an opening, coupling and conduit for protecting the cables. | 05-06-2010 |
20100101447 | Gondola Rail Car With Tub Floor - A rail car with a double longitudinal tub floor. The car may comprise a car body supported on a frame, the principal element of the frame being a longitudinal center sill assembly. The frame is in turn supported on a pair of wheel trucks. The car body includes a pair of generally vertical end wall assemblies joined to a pair of generally vertical side assemblies. The box is closed on the bottom by a floor assembly. The floor assembly includes a pair of longitudinal tubs. The longitudinal tubs are divided into tub segments and supported by cross-bearer assemblies. The cross-bearer assemblies are joined to the center sill assembly. The longitudinal tubs are supported primarily by the center sill assembly, both directly by joining each tub's lateral inboard edge to the center sill, and indirectly by joining the tub's chord end edges to the cross-bearer assemblies. Diagonal braces may be attached to the cross bearer assemblies and the side assemblies to help prevent bowing of the sides. | 04-29-2010 |
20100052331 | SYSTEM FOR STARTING POWER SYSTEMS WITH MULTIPLE GENERATOR UNITS - A control system and strategy for starting power systems having a plurality of power modules. For example, a multi-engine generator set switcher locomotive has three power modules each of which have an engine associated therewith. Upon receiving a command from the locomotive indicating to the engine control module to start at least one power module, i.e., engine, the control strategy determines whether to start the engine with an air or electric start. The control strategy starts only a single engine at a time, thereby avoiding overloading the airflow capacity of the compressed air source or the electric power capacity of the electric source. The control strategy also implements a command to start every engine with an air starter, if possible, to preserve the electric starter motor and the electric power capacity of the electric source. | 03-04-2010 |
20100006664 | SYSTEM, METHOD AND APPARATUS FOR EASER RAIL THAT MATES WITH THE UNCUT WEB OF A RUNNING RAIL - An easer rail is mated with the uncut web of a fixed running rail to form a more rigid thermal expansion joint between the fixed rail and a moveable rail. The easer rail has an extension that protrudes into the uncut web the fixed rail. The easer rail extension is machined to be complementary in shape to the uncut web and fits tightly against the flange, the underside of the head, and the base of the uncut web of the fixed rail. Bolt holes are provided through the extension and the easer rail, its extension, and the fixed rail to form multiple bolt joints. The bolted extension not only lengthens the easer rail but locks it in place between the head and base of the fixed rail to provide additional rigidity. | 01-14-2010 |