Patents by Inventor John Bertoldi

John Bertoldi 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).

  • High reliability pressure relief valve
    Patent number: 9732868
    Abstract: A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: August 15, 2017
    Assignee: PREVCO SUBSEA, LLC
    Inventors: John Bertoldi, Joseph Schimek, III, John Head
  • High Reliability Pressure Relief Valve
    Publication number: 20140360590
    Abstract: A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
    Type: Application
    Filed: April 8, 2014
    Publication date: December 11, 2014
    Applicant: PREVCO SUBSEA, LLC
    Inventors: John Bertoldi, Joseph Schimek, III, John Head