Patents by Inventor Darrell M. Vincent

Darrell M. Vincent 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).

  • Shuttle valve for concrete pump
    Patent number: 6443718
    Abstract: A shuttle valve for use in a pumping apparatus for pumping concrete or the like. The valve uses belleville springs to hold a wear ring against the concrete hopper, thereby creating a seal.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: September 3, 2002
    Assignee: Multiquip, Inc.
    Inventor: Darrell M. Vincent