Patents by Inventor Theodore Wolley Keller

Theodore Wolley Keller 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).

  • GPS based search and rescue transceiver
    Patent number: 6011510
    Abstract: A survival radio of the type useable in search and rescue operations and carried by the party to be rescued is described. The survival radio includes a GPS receiver, a transceiver and a microcontroller. The microcontroller responds to interrogation messages containing a predetermined identification code for the survival radio to cause a transceiver to transmit a geographic location of the survival radio as derived from GPS signals.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: January 4, 2000
    Assignee: Motorola, Inc.
    Inventors: David Moon Yee, Robert Henry Bickley, Charles Herbert Brenner, Philip John Zucarelli, Theodore Wolley Keller, Christopher Kent Moyer
  • GPS based search and rescue system
    Patent number: 5847679
    Abstract: A GPS based search and rescue system utilizes an airborne interrogation unit for extending the range of a second interrogation unit. The airborne unit relays communication between a survival radio and the second interrogation unit. The second interrogation unit is typically a ground based unit and is arranged to provide GPS correction information to the survival radio. The normal line of sight communication between a survival radio and an interrogation unit is extended to an over the horizon communication path by utilizing the airborne interrogation unit as a relay for communications.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: December 8, 1998
    Assignee: Motorola, Inc.
    Inventors: David Moon Yee, Robert Henry Bickley, Charles Herbert Brenner, Philip John Zucarelli, Theodore Wolley Keller, Christopher Kent Moyer