Patents by Inventor Carlos A. Fenny

Carlos A. Fenny 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).

  • Two-stage pressure relief valve
    Publication number: 20050129531
    Abstract: A two-stage pressure relief valve for use with hydraulic systems is disclosed. The two-stage pressure relief valve has a first stage that relieves increases in hydraulic system pressure over the normal operating pressure and up to a selected threshold pressure level, and a second stage that brings the hydraulic system pressure down to a selected reduced operating pressure that is below the normal operating pressure in response to increases in the operating pressure over the threshold pressure level.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Inventors: Carlos Fenny, Darrel Bryan, David Schultz
  • Integrated three function valve
    Publication number: 20040237518
    Abstract: An integrated three function valve (ITFV) that combines the functions of a bypass valve (e.g. 183a, 185a, 161a) into a single assembly is disclosed. The ITFV allows continued operation after any two failures.
    Type: Application
    Filed: March 19, 2004
    Publication date: December 2, 2004
    Inventors: Carlos A Fenny, David P Schulz, Ian L Price, David A Curd