Patents by Inventor David P. Cairns

David P. Cairns 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).

  • Fleshing machine
    Patent number: 4989427
    Abstract: A fleshing machine for removing fat and fleshy membranes from a hide or pelt, which includes a fixed position roller with many shaped cavities. Each cavity extends from an opening on the surface of the roller into the roller. A plurality of knives are contained one or more within each cavity. Each knife has a shaped cutting head which, in use, protrudes from the surface of the roller. The knives and cavities are so shaped that each knife is capable of limited reciprocal movement in a direction perpendicular to the axis of the roller.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: February 5, 1991
    Assignee: Her Majesty the Queen in right of New Zealand
    Inventors: Simon P. Van Der Park, Angus A. J. Robertson, David P. Cairns