Patents by Inventor Scott R. Ball

Scott R. Ball 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).

  • Power supply assembly for portable phone
    Patent number: 6167289
    Abstract: A portable phone has an internal battery and an external battery pack is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: December 26, 2000
    Assignee: Qualcomm Incorporated
    Inventors: Scott R. Ball, Paul E. Peterzell