Patents by Inventor David M. MacWatt

David M. MacWatt 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).

  • Apparatus for clearing mines
    Patent number: 5007325
    Abstract: A flail vehicle comprising a tractor unit and rotatable ground-beating means at one end of the tractor unit, the ground-beating means having a rotatable shaft from which extend flexible ground-beating members, wherein adjacent ground-beating members are offset angularly around the shaft from one another at their connections to the shaft.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: April 16, 1991
    Assignee: Aardvark Clear Mine Limited of Shevock Farm
    Inventor: David M. MacWatt