Patents by Inventor Gerald Biever

Gerald Biever 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).

  • Fiberglass, reinforced concrete hose shut-off valve
    Patent number: 6871832
    Abstract: A shut off valve for use with a concrete delivery hose includes a single flexible cylindrical sleeve disposed within a one piece, continuous rigid casing that surrounds the hose. A gas chamber is defined between the sleeve and the casing so that when pressurized gas is forced into the chamber, the sleeve will be displaced radially inwardly to constrict the hose and stop the flow of concrete. The shut-off valve also includes a relief valve for quickly exhausting gas from the valve, and an off/on indicator for indicating open/closed positions of the valve.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: March 29, 2005
    Assignee: Construction Forms, Inc.
    Inventors: Gary D. Lehnhardt, Gordon W. Guslick, Rolando Altamirano, Gerald Biever, James H. Larson
  • Fiberglass, reinforced concrete hose shut-off valve
    Publication number: 20040149942
    Abstract: A shut off valve for use with a concrete delivery hose includes a single flexible cylindrical sleeve disposed within a one piece, continuous rigid casing that surrounds the hose. A gas chamber is defined between the sleeve and the casing so that when pressurized gas is forced into the chamber, the sleeve will be displaced radially inwardly to constrict the hose and stop the flow of concrete. The shut-off valve also includes a relief valve for quickly exhausting gas from the valve, and an off/on indicator for indicating open/closed positions of the valve.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Inventors: Gary D. Lehnhardt, Gordon W. Guslick, Rolando Altamirano, Gerald Biever, James H. Larson