Patents by Inventor William D. Fahey

William D. Fahey 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: 6136111
    Abstract: Disclosed are compositions that are useful as microgas-generators, which can be used as propellants in airbags or seatbelt pretensioners. The compositions use a fuel which comprises an organic compound having a high ratio of the number of reactive carbon-oxygen groups to the total number of carbon atoms. The compositions also optionally use an oxidizer to supply oxygen to the fuel and/or a binding agent to form the fuel and optional oxidizer into particles. The compositions are useful as ignitors or squibbs, and can be used in industrial tools, seatbelt pretensioning systems, and airbags.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: October 24, 2000
    Assignee: Quantic Industries, Inc.
    Inventors: Kelly W. Lemons, Albert J. Baggett, Jr., William D. Fahey, Lawrence Weinman
  • Patent number: 5587550
    Abstract: This invention relates to a circuit and method for generating sequential, multiple impulses for use in firing or initiating more than one output device. The invention permits the firing, or actuation, of multiple devices at different times. The disclosed invention is an improvement on existing designs for multiple output impulse cartridges. This multi-output impulse cartridge has self-contained an electrical circuit and electrical energy storage capacitors which allow a single, short pulse of input current to initiate a first output, time out a second or multiple later outputs, and fire the outputs from the remaining energy stored on the capacitors.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: December 24, 1996
    Assignee: Quantic Industries, Inc.
    Inventors: Kenneth E. Willis, William D. Fahey, David S. Whang
  • Patent number: 5473623
    Abstract: The invention relates to providing a reliable means for controlling a laser diode in an initiator for starting a pyrotechnic reaction in an ordnance. The circuit has an array of capacitors to tune the coupling of the input signal to provide for more efficient power transfer from an electrical energy system. The circuit contains a full wave rectifier to provide DC power to operate the circuit. The circuit also contains a two stage current amplifier that is controlled by a differential amplifier. The differential amplifier compares a voltage proportional to the current flowing through the controlled laser diode with a reference voltage. The differential amplifier controls the current amplifier to limit the current that can pass through the laser diode. The circuitry that provides the reference voltage has the ability to drive the reference voltage to zero when the input signal is removed or is too low to drive the circuit properly.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: December 5, 1995
    Assignee: Quantic Industries, Inc.
    Inventors: William D. Fahey, Theodore J. Netoff, Giang V. Dao, Richard Saasta
  • Patent number: 5291829
    Abstract: A radio frequency attenuating connector includes a secondary coil connected to a load, an electromagnetic shield enclosing the secondary coil and the load, a primary coil, a coupler for detachably coupling the primary coil and the secondary coil, an integrated circuit including a square wave oscillator producing complementary output signals, and first and second switching devices. The first switching device is responsive to one of the complementary output signals for causing a current to flow in one direction through at least a portion of the primary coil during a first half cycle of oscillation, and the second switching device is responsive to another of the complementary output signals for causing a current to flow in an opposite direction through at least a portion of the primary coil. The integrated circuit has an enable feature and includes additional protection circuitry for enhancing the safety of the radio frequency attenuating connector.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: March 8, 1994
    Assignee: Quantic Industries, Inc.
    Inventors: Mark Avory, William D. Fahey, Theodore J. Netoff, Pierre R. Irissou
  • Patent number: 4179823
    Abstract: The visual system within an aircraft flight simulation system receives flight data from a flight simulation computer, and terrain data from a gaming area data base. A computer within the visual system organizes this image data in a buffer memory according to a particular format, and forwards the image data to an image processor. The following types of data are formatted and processed:Position vectors, defining the changing position of the aircraft with respect to the origin of the terrain coordinate system.Rotational data, defining the changing attitude of the aircraft with respect to the terrain coordinate system.Initialization vectors, defining the position of the landmark points within the terrain coordinate system. The landmark points are translated into the aircraft coordinate system to form translated vectors.Delta data, defining the position of other points, lines, and faces with respect to the landmark points.CIF data, defining color, intensity, defocus, etc.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: December 25, 1979
    Assignee: The Singer Company
    Inventors: John B. Sullivan, David R. Marsh, Raymond C. Osofsky, Steven R. Bryan, William D. Fahey, David E. Manners
  • Patent number: 4110737
    Abstract: A character recognition apparatus for recognizing an unknown character having a value at a matrix of discrete locations, comprising a ROM having at least a first plurality of storage locations each containing an address storing location and a reference storing location and storing information relative to a reference character, the ROM responding to a count signal and providing a first address signal and a reference signal, a RAM including a second greater plurality of storage locations each storing a value of the unknown character at a discrete matrix location, the RAM being responsive to the first address signal and providing a data signal corresponding to the value of the unknown character at the address location, a counter and a comparator circuit responding to the data signal and the reference signal and producing an output signal that serves as an indication that the unknown character is not the reference character.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: August 29, 1978
    Assignee: The Singer Company
    Inventor: William D. Fahey