Patents by Inventor Leo V. Casto

Leo V. Casto 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).

  • Mixing blade construction
    Patent number: 4721394
    Abstract: A mixing blade assembly including a hub, a set of impeller blades having air foil configurations and flat end portions for attachment to corresponding flat surfaces of mounting members which attach the blades to the hub. The flat attachment surfaces avoid stresses tending to distort the blades. The hub is a hollow member made from a set of plates. The leading edges of the blades are generally straight, and the trailing edges are inclined rearwardly from the tips towards the roots of the blades.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: January 26, 1988
    Assignee: Pro-Quip, Inc.
    Inventors: Leo V. Casto, Peter M. Reif