Patents by Inventor Earl G. Clowers

Earl G. Clowers 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).

  • Battery pack for cordless tools
    Patent number: 6007939
    Abstract: The present invention relates to a battery pack including a housing adapted for being connected to a cordless power tool. A plurality of lower battery cells are positioned within the housing and electrically connected in series with one another. An upper battery cell is stacked on a first of the lower battery cells and is electrically connected in series with the plurality of lower battery cells. An insulator cap is positioned at the top end of the upper battery cell. The battery pack also includes a first conductive strip electrically connected to a second of the lower battery cells. The first conductive strip extends completely from the second of the lower battery cells to the insulator cap and forms a first electrical contact of a connector that is located at the insulator cap.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: December 28, 1999
    Assignee: Porter-Cable Corporation
    Inventor: Earl G. Clowers