Patents by Inventor Daniel A. Wallace

Daniel A. Wallace 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).

  • High efficiency battery charging system
    Patent number: 4651080
    Abstract: A rechargeable battery array comprises a plurality of rechargeable battery cells (10)-(16) connected in series, and in equal plurality of charging sources (18)-(24) connected in series. Corresponding terminals of corresponding battery cells and charging sources are interconnected. The internal resistance of each of the charging sources is matched to the internal resistance of each battery cell. The configuration provides substantially faster charging of the battery cells than is possible using conventional battery cell array charging configurations. The invention is particularly well suited to photo-voltaic charging systems.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: March 17, 1987
    Assignee: John A. Draper
    Inventor: Daniel A. Wallace