Patents by Inventor Joseph L. Nardick

Joseph L. Nardick 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).

  • Concrete boom discharge valve apparatus
    Patent number: 5950988
    Abstract: A concrete boom discharge valve apparatus 10 for controlling the flow of concrete from the discharge end 101 of a concrete boom 100 including a nozzle member 20 operatively connected on one end 21 to the discharge end 101 of the boom 100 and having the other end 24 of the nozzle member 20 defining a contoured valve seat 25 which is operatively associated with a spring biased gate face element 31 of a gate valve member 30 for controlling the flow through the nozzle member 20.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: September 14, 1999
    Inventor: Joseph L. Nardick