Patents by Inventor Thomas J. Fagan

Thomas J. Fagan 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: 20120133545
    Abstract: Embodiments of a collision-avoidance transponder and method for reducing collisions with an aerial hazard are generally described herein. The collision-avoidance transponder may be configured for location on an aerial hazard and may be configured to regularly transmit a signal that mimics an air traffic control (ATC) transponder reply signal. The regularly-transmitted signal may include an altitude indication, such as the pressure altitude, of the aerial hazard. A collision-avoidance and warning system on an aircraft may receive the regularly-transmitted signal and provide a warning under certain conditions to allow the pilot to avoid the aerial hazard. The collision-avoidance transponder may include an ATC-type transponder and control circuitry to cause the transponder to regularly transmit the signal that includes a pressure altitude of the aerial hazard.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: Raytheon Company
    Inventors: Thomas J. Fagan, Carl G. Foster
  • Patent number: 6393990
    Abstract: This invention relates to a firing launching system and method which comprises a base having a plurality of apertures. The plurality of apertures receive a plurality of mortars which, in turn, receive a plurality of Pyrotechnic projectiles which may be situated in the plurality of mortars, respectively. The Pyrotechnic projectiles may then be ignited and launched to provide a fireworks display. The base may be a one-piece molded solid construction and provided with the plurality of apertures such that at least two-thirds of each of the plurality of mortars is encased to provide support to a wall of the mortar. The base may be provided with a plurality of apertures having a common diameter for receiving a common size mortar or receiving one of a plurality of sleeves, each having the same outer diameter, but a varying inner diameter to permit the sleeve to receive a different sized mortars.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: May 28, 2002
    Inventor: Thomas J. Fagan
  • Patent number: 5998240
    Abstract: Cooling of densely packaged semiconductor devices is achieved by microchannels which extract heat by forced convection and the use of fluid coolant located as close as possible to the heat source. The microchannels maximize heat sink surface area and provides improved heat transfer coefficients, thereby allowing a higher power density of semiconductor devices without increasing junction temperature or decreasing reliability. In its preferred embodiment, a plurality of microchannels are formed directly in the substrate portion of a silicon or silicon carbide chip or die mounted on a ground plane element of a circuit board and where a liquid coolant is fed to and from the microchannels through the ground plane. The microchannels comprise a plurality of closed-ended slots or grooves of generally rectangular cross section. Fabrication methods include deposition and etching, lift-off processing, micromachining and laser cutting techniques.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: December 7, 1999
    Assignee: Northrop Grumman Corporation
    Inventors: Robin E. Hamilton, Paul G. Kennedy, John Ostop, Martin L. Baker, Gregory A. Arlow, John C. Golombeck, Thomas J. Fagan, Jr.
  • Patent number: 5901037
    Abstract: A closed loop liquid cooling system for an RF transistor module including a plurality of elongated microchannels connected between a pair of coolant manifolds for conducting liquid coolant beneath one or more transistor dies to dissipate the heat generated thereby, a heat exchanger, a miniature circulating pump located on the module, and passive check valves having tapered passages for controlling the flow of coolant in the loop. The valves are truncated tapered passage microchannel valves having no moving parts and are fabricated so as to be a part of either the circulating pump, the coolant manifolds, or the microchannels.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: May 4, 1999
    Assignee: Northrop Grumman Corporation
    Inventors: Robin E. Hamilton, Thomas J. Fagan, Paul G. Kennedy, William S. Woodward
  • Patent number: 5801442
    Abstract: Cooling of densely packaged semiconductor devices is achieved by microchannels which extract heat by forced convection and the use of fluid coolant located as close as possible to the heat source. The microchannels maximize heat sink surface area and provides improved heat transfer coefficients, thereby allowing a higher power density of semiconductor devices without increasing junction temperature or decreasing reliability. In its preferred embodiment, a plurality of microchannels are formed directly in the substrate portion of a silicon or silicon carbide chip or die mounted on a ground plane element of a circuit board and where a liquid coolant is fed to and from the microchannels through the ground plane. The microchannels comprise a plurality of closed-ended slots or grooves of generally rectangular cross section. Fabrication methods include deposition and etching, lift-off processing, micromachining and laser cutting techniques.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: September 1, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Robin E. Hamilton, Paul G. Kennedy, John Ostop, Martin L. Baker, Gregory A. Arlow, John C. Golombeck, Thomas J Fagan, Jr.
  • Patent number: 4449376
    Abstract: An indoor unit for an electric heat pump is provided in modular form including a refrigeration module 10, an air mover module 12, and a resistance heat package module 14, the refrigeration module including all of the indoor refrigerant circuit components including the compressor 36 in a space adjacent the heat exchanger 28, the modules being adapted to be connected to air flow communication in several different ways as shown in FIGS. 4-7 to accommodate placement of the unit in various orientations.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: May 22, 1984
    Assignee: Westinghouse Electric Corp.
    Inventors: Robert Draper, Robert S. Lackey, Thomas J. Fagan, Jr., Stephen E. Veyo, Joseph R. Humphrey
  • Patent number: 4137798
    Abstract: Apparatus for rotating a driven shaft in the same direction at two different speeds upon rotation of a drive shaft in respective, opposed directions. The apparatus includes a sun gear on the drive shaft, a ring gear on the driven shaft, a planet carrier rotatably mounted on the drive shaft, adjacent to the sun gear, one or more planetary gears rotatably mounted on the planet carrier and in mesh with the sun and ring gears. An over-running clutch locks the planet carrier to the drive shaft when the latter rotates in one direction to thereby lock the planetary gears to the sun and ring gears to cause rotation of the ring gear and the driven shaft in a first direction at a first speed. A sprag prevents rotation of the planet carrier relative to a fixed support when the drive shaft rotates in the opposite direction to thereby allow rotation of the planetary gears about fixed axes to rotate the ring gear and thereby the driven shaft in the first direction at a second speed.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: February 6, 1979
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Francis J. Sisk, Thomas J. Fagan
  • Patent number: 3956724
    Abstract: Individual wires in a winding are formed as polygons having contacting faces and noncontacting faces. Contacting faces of adjacent wires are positively engaged, while the noncontacting faces of adjacent wires form the periphery of openings that extend through the winding. Insulation may be removed from the noncontacting faces to facilitate cooling.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: May 11, 1976
    Assignee: Westinghouse Electric Corporation
    Inventor: Thomas J. Fagan, Jr.