Patents by Inventor Harry W. Pavey

Harry W. Pavey 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: 5158147
    Abstract: An auger cutter head includes a rotatable body that is mountable on an auger and a plurality of cutting assemblies spaced about the outer wall of the rotatable body to drill a hole in the ground as the auger cutter head is rotated and advanced into the ground. Two of the cutting assemblies include outside chisel bits positioned to ream or gauge the hole as the cutter head is rotated and advanced. All of the flighting sections, bit, blocks, and blade assemblies provided in the cutting assemblies are offset in a radially inward direction relative to the two outside chisel bits to reduce the wear and tear on those components. Each of the chisel bits is oriented to rotate relative to its bit block about a predetermined axis of rotation to reduce wear caused by uneven loading on the rotatable chisel bits during drilling of the hole.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: October 27, 1992
    Assignee: Mobile Drilling Company, Inc.
    Inventors: Harry W. Pavey, Michael T. Burton