Patents by Inventor William Leslie McDowall

William Leslie McDowall 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 construction
    Patent number: 4022951
    Abstract: A multi-cell battery comprises a plurality of frames each divided into a number of side by side active paste support areas. The frames are assembled and secured together in a stacked formation so that the perimeter portions of the frames form the top, bottom and two opposite sides of the battery, and the divisions in the frames form cell partitions.Each frame is pasted with active material to form plates with adjacent plates in each frame being of opposite polarity and adjacent plates in each frame being of opposite polarity and adjacent plates in adjoining frames also being of opposite polarity. Electrolyte-porous separator material is provided between adjacent plates in adjoining frames.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: May 10, 1977
    Assignee: Dunlop Australia Limited
    Inventor: William Leslie McDowall
  • Battery construction
    Patent number: 3941615
    Abstract: A multi-cell battery comprising a plurality of frames each divided into a number of side-by-side active paste support areas. The frames are assembled and secured together in a stacked formation so that the perimeter portions of the frames form the top, bottom and two opposite sides of the battery, and the divisions in the frames form cell partitions. Each frame is pasted with active material to form plates with adjacent plates in each frame being of opposite polarity and adjacent plates in adjoining frames also being of opposite polarity.
    Type: Grant
    Filed: September 20, 1973
    Date of Patent: March 2, 1976
    Assignee: Dunlop Australia Limited
    Inventor: William Leslie McDowall