Patents by Inventor Robert D. Ellis

Robert D. Ellis 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).

  • Patent number: 4120788
    Abstract: This system provides a method by which oil slicks are contained, removed and recovered from a water surface by providing a layer of sorbent material, such as foam, under the oil slick and above the oil slick to sandwich the oil. A foam spreading apparatus is provided which includes a floating boom attached to a towing vessel, the boom having spreader units disposed above and below the oil slick to discharge the foam forming a sandwich for the oil slick. The apparatus includes a harvesting vessel for cutting and shredding the foam sandwich and a recovery vessel for separating the oil from the strips.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: October 17, 1978
    Inventor: Robert D. Ellis