Patents by Inventor Phillip David Zimmerman

Phillip David Zimmerman 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).

  • Apparatus and method for testing remaining capacity of a battery
    Patent number: 6823274
    Abstract: An apparatus and method of determining remaining capacity in a battery, including the following steps: detecting the presence of a battery within one of a plurality of specified terminals; automatically initiating a timed pulse load test on the battery upon detection in a terminal; continuously passing current from the battery through a specified resistive load for the terminal; measuring a voltage of the battery while under the resistive load; comparing the measured voltage to a discharge voltage profile of the battery; and, computing the measured voltage as a percent of remaining battery capacity.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: November 23, 2004
    Assignee: ZTS, Inc.
    Inventors: Phillip David Zimmerman, David Eric Zimmerman, Gary Lee Claypoole
  • Apparatus and method for testing remaining capacity of a battery
    Publication number: 20030088376
    Abstract: An apparatus and method of determining remaining capacity in a battery, including the following steps: detecting the presence of a battery within one of a plurality of specified terminals; automatically initiating a timed pulse load test on the battery upon detection in a terminal; continuously passing current from the battery through a specified resistive load for the terminal; measuring a voltage of the battery while under the resistive load; comparing the measured voltage to a discharge voltage profile of the battery; and, computing the measured voltage as a percent of remaining battery capacity.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 8, 2003
    Inventors: Phillip David Zimmerman, David Eric Zimmerman, Gary Lee Claypoole