Patents by Inventor John W. Hereford

John W. Hereford 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).

  • Avalanche victim locating transceiving apparatus
    Patent number: 6484021
    Abstract: A rescue transceiver apparatus for transmitting a signal to and receiving a signal from another rescue transceiver apparatus is provided. The apparatus comprises a housing and a radio signal transmitter for the transmission of a radio signal in a transmitting mode with a first predetermined frequency with the radio signal transmitter being mounted within the housing. A receiver is provided for selectively receiving the first predetermined frequency from the radio signal transmitter in a receiving mode. The receiver comprises a first antenna mounted completely within the housing, a second antenna mounted completely within the housing with the second antenna being disposed substantially perpendicular to the first antenna, and a virtual third antenna mounted completely within the housing with the virtual third antenna being derived from phase information generated by the first antenna and the second antenna.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: November 19, 2002
    Inventors: John W. Hereford, Michael X. Bond
  • Avalanche victim locating transceiving apparatus
    Patent number: 6167249
    Abstract: A rescue transceiver apparatus for transmitting a signal to and receiving a signal from another rescue transceiver apparatus is provided. The apparatus comprises a housing and a radio signal transmitter for the transmission of a radio signal in a transmitting mode with a first predetermined frequency with the radio signal transmitter being mounted within the housing. A receiver is provided for selectively receiving the first predetermined frequency from the radio signal transmitter in a receiving mode. The receiver comprises a first antenna mounted completely within the housing, a second antenna mounted completely within the housing with the second antenna being disposed substantially perpendicular to the first antenna, and a virtual third antenna mounted completely within the housing with the virtual third antenna being derived from phase information generated by the first antenna and the second antenna.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: December 26, 2000
    Assignee: John W. Hereford
    Inventors: John W. Hereford, Michael X. Bond