Patents by Inventor Darrell L. Walters

Darrell L. Walters 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).

  • Reversible clam shell bucket
    Patent number: 4928410
    Abstract: A material handling apparatus connected to a prime mover having first and second jaws, the first jaw connected and configured to approximate a grading blade for a bulldozer, and the second jaw connected to the first jaw in one of two orientations, 180 degrees apart and about vertical axis. The jaws also have open and closed positions, defining four extreme positions. The combined first and second jaws define either a bucket, or when the second jaw is extended away from the grader blade a clam shell type bucket, or a pincer type grappler.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: May 29, 1990
    Inventors: Darrell L. Walters, Steven D. Larsen