Patents by Inventor William C. Otwell

William C. Otwell 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).

  • Excavation bucket and method of digging
    Patent number: 5526591
    Abstract: An excavation bucket includes a bottom assembly which defines a scoop slot opening along a portion of the bottom assembly. The excavation bucket is useful for excavating material in a conventional manner in a first operating mode, and for fine-grading material in a novel manner in a second operating mode. When operating in the second operating mode the excavation bucket is capable of fine-grading adjacent buried objects without damaging the buried objects.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: June 18, 1996
    Inventor: William C. Otwell
  • Excavation bucket
    Patent number: 5416990
    Abstract: An excavation bucket with a scoop provided at a bottom portion of the bucket to provided fine digging and grading of materials or trenches. The excavation bucket is particularly useful for digging trenches near utilities and finishing trenches at proper grade.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: May 23, 1995
    Inventor: William C. Otwell