Patents by Inventor Thomas G. O'Keeffe

Thomas G. O'Keeffe 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).

  • Patent number: 6724286
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: April 20, 2004
    Assignee: General Electric Company
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty
  • Patent number: 6494617
    Abstract: A status detection apparatus for electrical equipment includes a plurality of distributed multiparameter sensors in a containment vessel or other fluid filled region of the electrical equipment. The sensors are capable of providing data relating to plural parameters of the fluid simultaneously at different positions in the fluid. The data provided by the sensors can be processed to permit localization of incipient faults or can indicate other operating states when combined with known flow data of the fluid through the electrical equipment. A method for detecting status of electrical equipment includes sensing parameters simultaneously at multiple locations in the fluid and determining operating status based on the sensed parameters.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: December 17, 2002
    Assignee: General Electric Company
    Inventors: Edward B. Stokes, Steven H. Azzaro, Thomas G. O'Keeffe
  • Publication number: 20020089401
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Application
    Filed: March 26, 2002
    Publication date: July 11, 2002
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty
  • Patent number: 6401518
    Abstract: A fluid filled transformer including a tank for containing at least primary and secondary windings, a radiator connected to the tank via top and bottom headers, a fluid disposed in the tank, a fluid circulation flow path including passages through the windings, radiator, headers, and at least a portion of the tank, and at least one diagnostic sensor disposed within the fluid circulation flow path for measuring properties of the fluid. By positioning the sensor within the circulation flow path, measured values are more reliable, accurate, and efficiently sensed.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventors: Thomas G. O'Keeffe, Steven H. Azzaro, Vinay B. Jammu, Edward B. Stokes
  • Patent number: 6404314
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty