Patents by Inventor John D. Fiske, II

John D. Fiske, II 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).

  • Method and apparatus for dynamically charging a battery
    Patent number: 5331268
    Abstract: A charger (302) determines the voltage baseline of a battery (306) and establishes a voltage range based on the voltage baseline of battery (306). Once the rapid charge rate has terminated and the trickle charge rate commenced, charger (302) monitors the voltage of the battery in order to make sure the battery is not being depleted. If the battery voltage is above the established range, the trickle charge rate is decreased, and if the battery voltage is below the voltage range, the trickle charge rate is increased.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: July 19, 1994
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Daniel M. Nigro, John D. Fiske, II
  • Method and apparatus for rapidly charging a battery at high temperature
    Patent number: 5241259
    Abstract: A battery charger (230) is provided for charging a battery (210) at high temperatures. The charger (230) includes a thermistor (236) for monitoring the ambient temperature and a rapid charger (232) for providing the charge current to the battery. When the ambient temperature exceeds a high threshold temperature and when the battery (210) needs to be charged at this temperature, the battery charger (230) rapid charges the battery until the battery temperature reaches a cut-off temperature. The cut-off temperature is a temperature having a fixed level above the ambient temperature.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: August 31, 1993
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Daniel M. Nigro, John D. Fiske, II