Patents by Inventor Kevin Allan

Kevin Allan 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).

  • Method and system for taxiing an aircraft
    Patent number: 7802757
    Abstract: The system is used for taxiing an aircraft and comprises at least one multi-spool gas turbine engine, the engine having an electrical motor in a torque-driving engagement with a low pressure spool of the engine. The low pressure spool has a propulsor connected thereon to generate thrust when rotated. A controller is connected to the electrical motor and an electrical power source to control an amount of electrical power provided from the power source to the electrical motor so as to drive the propulsor and cause at least a major portion of the thrust to be generated by the propulsor for moving the aircraft during taxiing.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: September 28, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Kevin Allan Dooley, Nashed Youssef
  • Sensorless control in a permanent magnet machine
    Patent number: 7800327
    Abstract: An apparatus and method for providing improved sensorless control of permanent magnet motors is described. Induced electricity from at least one winding set is used to determine rotor position and provide feedback to a commutation circuit driving at least another winding set isolated from the first.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: September 21, 2010
    Assignee: Pratt-Whitney Canada Corp
    Inventor: Kevin Allan Dooley
  • Pump and method
    Patent number: 7794214
    Abstract: A pump for pumping a liquid comprises a rotor, a stator having at least one electrical winding and at least one cooling path, and a working conduit extending from a pump inlet to a pump outlet, the working conduit being in liquid communication with the cooling path at least at a cooling path inlet to permit a portion of the pumped liquid to circulate through the cooling path when the pump is in use.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 14, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Gas turbine engine oil system operation
    Patent number: 7793505
    Abstract: A method of operating a gas turbine engine having at least one electric machine associated therewith, the engine having an oil system communicating with an electric oil pump, at least one bearing cavity of the engine and a coolant passage of the electric machine, the method comprising the step of pumping oil intermittently to the oil system to cool the electric machine.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: September 14, 2010
    Assignee: Pratt & Whitney Canada Corp
    Inventor: Kevin Allan Dooley
  • FUEL SYSTEM OF GAS TURBINE ENGINES
    Publication number: 20100199681
    Abstract: A method for purging fuel from a fuel system of a gas turbine engine on shutdown of the engine comprises, in one aspect, terminating a fuel supply to the fuel system and using the residual compressed air to create a reversed pressure differential in the fuel system relative to a forward pressure differential of the fuel system used to maintain fuel supply for engine operation, and under the reversed pressure differential substantially purging the fuel remaining in the system therefrom to a fuel source.
    Type: Application
    Filed: April 19, 2010
    Publication date: August 12, 2010
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: Kevin Allan DOOLEY
  • Triggered pulsed ignition system and method
    Patent number: 7768767
    Abstract: The ignition system is for use in a gas turbine engine. It comprises an ignition plug having a triggered spark gap therein.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: August 3, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • CALL INTERCEPT METHODS, SUCH AS FOR CUSTOMER SELF-SUPPORT ON A MOBILE DEVICE
    Publication number: 20100159902
    Abstract: A method for intercepting calls from a remote or mobile device for customer self-support detects when users or subscribers dial one or more predetermined numbers. If the number corresponds to one of the predetermined numbers (such as a customer support number), the phone may intercept the call and display a list of potential solutions to the subscriber's problems. Various other features and embodiments art disclosed.
    Type: Application
    Filed: March 9, 2010
    Publication date: June 24, 2010
    Inventors: Brian Roundtree, Kevin Allan, Linda Beinikis, Keldon Rush
  • ARCHITECTURE FOR ELECTRIC MACHINE
    Publication number: 20100148622
    Abstract: The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be used to control at least one of the output voltage and current of the first winding.
    Type: Application
    Filed: March 5, 2010
    Publication date: June 17, 2010
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: Kevin Allan DOOLEY
  • TANDEM ELECTRIC MACHINE ARRANGEMENT
    Publication number: 20100133835
    Abstract: The tandem electric machine arrangement comprises an outside rotor having two axially spaced-apart sets of circumferentially-disposed permanent magnets. It also comprises an inside stator having at least two electrically-independent windings, the at least two windings axially spaced apart from one another and disposed relative to the magnet sets to thereby be magnetically coupled to a respective one of the sets of permanent magnets during rotation of the rotor. One of the rotor and the stator is provided in two separate pieces, each piece supported from opposite axial sides of the electric machine relative to one another. The other of the rotor and the stator is supported from substantially centrally of the two pieces.
    Type: Application
    Filed: November 28, 2008
    Publication date: June 3, 2010
    Inventors: KEVIN ALLAN DOOLEY, JOSEPH BRAND
  • Fuel system of gas turbine engines
    Patent number: 7726112
    Abstract: A method for purging fuel from a fuel system of a gas turbine engine on shutdown of the engine comprises, in one aspect, terminating a fuel supply to the fuel system and using the residual compressed air to create a reversed pressure differential in the fuel system relative to a forward pressure differential of the fuel system used to maintain fuel supply for engine operation, and under the reversed pressure differential substantially purging the fuel remaining in the system therefrom to a fuel source.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: June 1, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Solid State Lighting, Driver Circuits, and Related Software
    Publication number: 20100117545
    Abstract: LED lighting fixtures, or luminaires, related components, driver circuit, methods, and software/firmware are described can provide for among other things, ambient environment sensing, thermal self-monitoring, sensor-based power management, communications, and/or programmability. Driver and lighting circuits configured for electrical loads such as series arrangements of light emitting diodes are also described. Embodiments of PFC stages and driver stages can be combined for use as a power supply, and may be configured on a common circuit board. Power factor correction and driver circuits can be combined with one or more lighting elements as a lighting apparatus. Methods of hysteretic power factor correction start-up are also described.
    Type: Application
    Filed: October 20, 2009
    Publication date: May 13, 2010
    Applicant: LSI Industries, Inc.
    Inventors: Kevin Allan Kelly, John D. Boyer, Martin Brundage
  • WOVEN ELECTROSTATIC OIL PRECIPITATOR ELEMENT
    Publication number: 20100107882
    Abstract: An electrostatic precipitator element comprises preferably a mesh made of at least two individually insulated conductors with defined openings therebetween. An electrical field in the openings electrostatically attracts suspended particulate to a respective conductors for collection.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 6, 2010
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: Kevin Allan DOOLEY
  • Architecture for electric machine
    Patent number: 7709980
    Abstract: The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be used to control at least one of the output voltage and current of the first winding.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: May 4, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Cooled conductor coil for an electric machine and method
    Patent number: 7705508
    Abstract: The invention includes an electric machine having a rotor, a stator and at least one electrical coil disposed in the machine and a source of coolant fluid in communication with the coil. The coil has concentric turns having spaces therebetween adapted to channel coolant flow between the concentric turns.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: April 27, 2010
    Assignee: Pratt & Whitney Canada Crop.
    Inventors: Kevin Allan Dooley, Joshua D. Bell
  • Fault monitoring of electric machines
    Patent number: 7696657
    Abstract: A method and apparatus for monitoring an electric machine system, the system having at least two machines or machine channels independently cooled by separate flows of a coolant fluid, the method including comparing coolant properties of the machines to detect a condition(s) of interest in one or more of the machines.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: April 13, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Modulation Control of Power Generation System
    Publication number: 20100072959
    Abstract: Methods and apparatuses are disclosed for producing current with a desired output frequency from one or more fixed or variable speed alternators by varying a saturation level of a portion of the alternator(s) based on a output frequency desired, and preferably then rectifying the output to produce a desired electrical output which may be provided as direct current or alternating current to a suitable load.
    Type: Application
    Filed: July 16, 2009
    Publication date: March 25, 2010
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: Kevin Allan DOOLEY
  • Call intercept methods, such as for customer self-support on a mobile device
    Patent number: 7676221
    Abstract: A method for intercepting calls from a remote or mobile device for customer self-support detects when users or subscribers dial one or more predetermined numbers. If the number corresponds to one of the predetermined numbers (such as a customer support number), the phone may intercept the call and display a list of potential solutions to the subscriber's problems. Various other features and embodiments art disclosed.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 9, 2010
    Assignee: SNAPin Software Inc.
    Inventors: Brian Roundtree, Kevin Allan, Linda Beinikis, Keldon Rush
  • LOCAL INTERCEPT METHODS, SUCH AS APPLICATIONS FOR PROVIDING CUSTOMER ASSISTANCE FOR TRAINING, INFORMATION CALLS AND DIAGNOSTICS
    Publication number: 20100056114
    Abstract: A method of displaying a tutorial to a user of a mobile device is disclosed. In some examples, the mobile device receives an input associated with one or more user functions of the mobile device and launches a locally based application in response to the received input. The locally based application may output instructions to the user explaining to the user how to implement the one or more user functions.
    Type: Application
    Filed: June 23, 2006
    Publication date: March 4, 2010
    Inventors: Brian Roundtree, Kevin Allan, Tom Trinneer
  • Current limiting means for a generator
    Patent number: 7656067
    Abstract: The invention provides means of limiting maximum current conducted through windings of an electric machine having a rotor and a stator. By encouraging an appropriate leakage flux around a winding, a leak impedance can be achieved which may be used, according to the invention, to limit the maximum current in the winding as a matter of machine design.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: February 2, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • INDUCTANCE AUGMENTER FOR AN ELECTRIC MACHINE
    Publication number: 20100019605
    Abstract: The electric machine comprises a rotor and stator, the rotor and stator having generally equal axial lengths. The stator has at least one primary and at least one control winding disposed around the stator. The electric machine comprises a stator extension of a magnetic material. The stator extension is disposed coaxially with the stator and has only the at least one control winding wrapped therearound. The stator extension extends axially adjacent the stator beyond an axial terminus of the rotor and defines a magnetic circuit around the at least one control winding. The stator extension is configured such that in use, the magnetic circuit remains unsaturated thereby increasing inductance of at least one control winding in an electric alternator/motor.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Inventors: KEVIN ALLAN DOOLEY, Joshua David Bell