Patents by Inventor Ross B. Barrington

Ross B. Barrington 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).

  • Filter for dry cleaning solvent
    Patent number: 4810379
    Abstract: A filter unit (1) has an annular pleated paper filter element (9) the pleats of which are sealed at their end edges (92) to define inwardly opening pockets. Consequently, gaskets (8) need only seal the radially innermost periphery of each end of the filter element (9), and end plates (4,5) supporting the gaskets (8) may be given a smaller diameter than the element (9).
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: March 7, 1989
    Inventor: Ross B. Barrington
  • Air filters
    Patent number: 4268290
    Abstract: A pleated paper filter element has the configuration of the frustrum of a cone with the pleats extending lengthwise of the sloping wall of the cone and has pleat separation dimples embossed into the paper from which the element is made, the height of said dimples being graduated lengthwise of the element so as to provide controlled pleat separation over at least most of the length of the element.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: May 19, 1981
    Assignee: Engineering Components Limited
    Inventor: Ross B. Barrington