Patents by Inventor Bret Worden

Bret Worden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120049478
    Abstract: Systems and methods for weight transfer in a vehicle are provided. One system includes a plurality of springs and a plurality of movable spring seats configured to adjust a length of the plurality of springs. Additionally, a pneumatic actuator is provided that is connected to the plurality of movable springs and configured to move the movable spring seats to adjust the length of the plurality of springs. Further, a controller is provided that is coupled to the pneumatic actuator to control the pneumatic actuator to adjust the length of the plurality of springs.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 1, 2012
    Inventors: Munishwar Ahuja, Nikhil Subhashchandra Tambe, Bret Worden, Mandyam Sridhar
  • Publication number: 20110307113
    Abstract: A control assembly includes a monitoring module and a switching module. The monitoring module determines a load demand of a first rail vehicle traveling along a track, wherein the first rail vehicle is supplied with electric current from a plurality of power sources over a conductive pathway extending along the track. The switching module is communicatively coupled with the monitoring module and is joined with a switch controller disposed between the power sources and the conductive pathway. The switching module directs the switch controller to change which of the power sources supply the electric current to the first rail vehicle over the conductive pathway based on the load demand.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 15, 2011
    Inventors: Ajith Kuttannair Kumar, Bret Worden
  • Publication number: 20110283915
    Abstract: A wheel impact reduction system for a rail vehicle includes a sensor, a control module, and a force reduction assembly. The sensor detects a discontinuity in a rail that is located upstream of a wheel of the rail vehicle in a direction of travel. The control module is communicatively coupled with the sensor. The control module determines whether to apply a correction force to the wheel based on the discontinuity detected by the sensor. The force reduction assembly is joined to the wheel of the rail vehicle and is communicatively coupled with the control module. The force reduction assembly reduces a wheel impact force imparted on the rail by the wheel by applying the correction force to the wheel.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Inventors: Ajith Kuttannair Kumar, Bret Worden
  • Publication number: 20110221159
    Abstract: Truck assemblies, systems and methods are provided for transferring weight supported by various wheels, and axles. The vehicle suspension method includes operating the suspension in a first mode with a first effective suspension spring rate; and operating the suspension in a second mode with a second, different, effective suspension spring rate.
    Type: Application
    Filed: May 24, 2011
    Publication date: September 15, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Adrian Gorski, Ajith Kuttannair Kumar, Bret Worden, Jingjun Zhang
  • Patent number: 7954436
    Abstract: Truck assemblies, systems and methods are provided for transferring weight supported by various wheels, and axles. The vehicle suspension method includes operating the suspension in a first mode with a first effective suspension spring rate; and operating the suspension in a second mode with a second, different, effective suspension spring rate.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: June 7, 2011
    Assignee: General Electric Company
    Inventors: Adrian Gorski, Ajith Kuttannair Kumar, Bret Worden, Jingjun Zhang
  • Publication number: 20110082606
    Abstract: Methods and systems are provided for controlling a vehicle having a first truck with a first lift mechanism and a second truck with a second lift mechanism, each of the first and second trucks further configured with a plurality of axles, each of the first and second lift mechanisms configured to dynamically transfer weight from one axle to another. In one embodiment, the method comprises, responding to an operating condition by adjusting the first lift mechanism different from the second lift mechanism.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 7, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ajith Kuttannair Kumar, Bret Worden, Jeremy Thomas McGarry
  • Publication number: 20110079168
    Abstract: Methods and systems are provided for a vehicle having a plurality of axles and a lift mechanism configured to dynamically transfer weight from one axle to another. In one example, the method comprises, responding to an operating condition by adjusting the lift mechanism to provide a determined amount of lift, and in response to vehicle braking, a vehicle stall risk, poor infrastructure conditions, and/or a high vehicle penalty, reducing the determined amount of lift.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 7, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ajith Kuttannair Kumar, Bret Worden, Jeremy Thomas McGarry
  • Publication number: 20100175581
    Abstract: Truck assemblies, systems and methods are provided for transferring weight supported by various wheels, and axles. An example truck assembly may include a truck frame element, and a carrier coupled with the truck frame element. A bias may be configured to bias the carrier away from the truck frame element. An actuatable linkage arrangement may include a compliant linkage coupled with the carrier. The compliant linkage may pull the carrier against the bias in a first direction.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 15, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ajith Kuttannair Kumar, Bret Worden, Michael Marley, Amit Iyer, Adrian Gorski
  • Publication number: 20100175580
    Abstract: Truck assemblies, systems and methods are provided for transferring weight supported by various wheels, and axles. The vehicle suspension method includes operating the suspension in a first mode with a first effective suspension spring rate; and operating the suspension in a second mode with a second, different, effective suspension spring rate.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 15, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Adrian Gorski, Ajith Kuttannair Kumar, Bret Worden, Jingjun Zhang
  • Publication number: 20090293760
    Abstract: A drive system for a grid blower of a vehicle is provided. The system includes: an electrical bus, a grid of resistive elements connected to the electrical bus, the grid of resistive elements configured to thermally dissipate electrical power generated from braking of the vehicle, the electrical power being transmitted on the electrical bus to the grid of resistive elements, an electrical power modulation device configured to modify electrical power received from at least one of the electrical bus and the grid of resistive elements, and a grid blower motor coupled to an output of the electrical power modulation device, wherein a speed of the grid blower motor varies based on the electrical power that has been modified by the electrical power modulation device.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ajith Kuttannair Kumar, Bret Worden, Sudhir Kumar Gupta, Theodore Clark Brown
  • Publication number: 20070046220
    Abstract: A method and system for determining a ground speed for locomotives (e.g., 12, 14) of a train (16) comprising at least two locomotives for use in controlling an operation of the train. The method includes selecting an axle of any one locomotive of the train for measuring a speed corresponding to the selected axle. The method also includes determining a ground speed for at least another locomotive of the train based on a measured speed corresponding to the selected axle of the one locomotive.
    Type: Application
    Filed: August 23, 2005
    Publication date: March 1, 2007
    Inventors: Robert Alton, Ajith Kumar, Bret Worden
  • Publication number: 20070013232
    Abstract: In an off-road vehicle having a resistor grid network and a blower system as part of a braking system operable to determine at least one of a resistor failure and a blower failure, the system including a first series of resistors connected in series, a second series of resistors connected in series, a blower cross to at least one of the first series of resistors and the second series of resistors, a sensor proximate at least one of the first series of resistors, the second series of resistors, and the blower, wherein each individual resistor in the first series connected in parallel to an individual resistor in the second series, and wherein when at least one of a current value, blower speed, and voltage value changes, the grid network is disconnected.
    Type: Application
    Filed: September 20, 2006
    Publication date: January 18, 2007
    Inventors: Christopher McNally, Ajith Kumar, Bret Worden, Theodore Brown
  • Publication number: 20070001629
    Abstract: A traction control system for controlling an electric traction motor drivingly coupled to a wheel of a tractive vehicle. The traction control system includes means for determining speed of the wheel, means for determining tractive effort of the wheel and a control circuitry for controlling drive signals to the motor based upon the wheel speed and tractive effort.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Jeremy McGarry, Somakumar Ramachandra-Panicker, Ajith Kumar, Venkatarao Ryali, Bret Worden, Jeffrey Daigle, Paul Houpt
  • Publication number: 20060255656
    Abstract: A method and system is provided for detecting and performing diagnostics regarding an incipient ground fault that may occur in an electrical propulsion system of a traction vehicle, such as a locomotive, transit vehicle, or off-highway vehicle. The method allows providing a first ground connection for the electrical propulsion system. This first ground connection forms a grounding path generally used by the electrical propulsion system during normal operation. The method further allows providing a second ground connection for the electrical propulsion system. This second ground connection forms a grounding path selectively usable in lieu of the first ground connection. A control strategy is defined for switching between the first ground connection and the second ground connection. A respective leakage current associated with at least one of the first and second ground connections may be monitored.
    Type: Application
    Filed: May 11, 2005
    Publication date: November 16, 2006
    Inventors: Mark Linebach, Ajith Kumar, Bret Worden, Jeremy McGarry, Scott Zarella
  • Publication number: 20060181821
    Abstract: A system for isolating electrical ground faults and secondary failures in an electrical system, the system comprising an AC ground isolation state machine for detecting and isolating an AC ground, a DC ground isolation state machine for detecting and isolating a DC ground, a component failure isolation state machine for detecting and isolating a change in a resistance, and a component failure early detection algorithm for determining a failure before using the state machines.
    Type: Application
    Filed: April 11, 2006
    Publication date: August 17, 2006
    Inventors: Christopher McNally, Ajith Kumar, Bret Worden
  • Patent number: 7027900
    Abstract: A method of dynamically controlling traction of a locomotive (V) having a plurality of axles (A1–A6) on each of which are mounted wheels (W) for moving the locomotive over a set of rails (R). A creep control signal (creep_n) is provided to a controller (TMTC) for each axle to move the locomotive over the rails, the creep control signal being a function of adhesion operation characteristics (tractive effort, torque, creep) for that axle. An advisory signal (ccc_n) combining values representative of the adhesion quality of the two axles is provided to the controller to maximize the tractive effort of the axle if the adhesion quality of the other axle is a maximum for the current rail conditions. This reduces the amount of time for the axle to attain its maximum tractive effort when rail conditions change.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 11, 2006
    Assignee: General Electric Company
    Inventors: Ajith K. Kumar, Bret Worden
  • Publication number: 20050145438
    Abstract: A wayside lubrication apparatus (10) for applying a lubricant (26) in response to the presence of a train (14) on the rail (14). To avoid excessive lubricant on the rail, lubricant may be applied in response to a second train only if a predetermined time period has elapsed between first and second trains. The amount of lubricant applied in response to the second train may be controlled by refilling a lubricant container (68) at a controlled rate. The application of lubricant may be terminated before a number of rearmost load cars (46) of the train pass the lubricant applicator (28) so that the quantity of lubricant remaining on the rail is reduced by the wheels (40) of the cars at the end of the train. This prevents the lubricant from reducing the traction capability of the drive wheels (38) of the next oncoming locomotive (16). Operation of the lubricant dispensing apparatus (22) may be bypassed by an operator-controlled bypass device (60) located on-board the train.
    Type: Application
    Filed: February 10, 2005
    Publication date: July 7, 2005
    Inventors: Ajith Kumar, Bret Worden
  • Publication number: 20050065701
    Abstract: A method of dynamically controlling traction of a locomotive (V) having a plurality of axles (A1-A6) on each of which are mounted wheels (W) for moving the locomotive over a set of rails (R). A creep control signal (creep_n) is provided to a controller (TMTC) for each axle to move the locomotive over the rails, the creep control signal being a function of adhesion operation characteristics (tractive effort, torque, creep) for that axle. An advisory signal (ccc_n) combining values representative of the adhesion quality of the two axles is provided to the controller to maximize the tractive effort of the axle if the adhesion quality of the other axle is a maximum for the current rail conditions. This reduces the amount of time for the axle to attain its maximum tractive effort when rail conditions change.
    Type: Application
    Filed: September 19, 2003
    Publication date: March 24, 2005
    Inventors: Ajith Kumar, Bret Worden