Patents by Inventor Gregg Marshel

Gregg Marshel 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).

  • PRESSURE/VACUUM (PV) VALVE FOR FUEL STORAGE TANKS, IN-LINE PRESSURE-VACUUM VALVE TEST UNIT, AND COMBINATION THEREOF
    Publication number: 20240043261
    Abstract: A flow-through pressure-vacuum valve includes a valve body having a tank-side opening and a vent-side opening. A pressure relief valve (e.g., a ball held in a corresponding seat by gravity) is positioned within a first passageway through the body. The ball is moved from the first valve seat to open the first passageway when pressure at the tank-side opening exceeds pressure at the vent-side opening by a predetermined pressure differential. A vacuum relief valve is positioned within another passageway (e.g., a serpentine passageway). The vacuum relief valve (e.g., also a ball held in a corresponding seat by gravity) is positioned within the serpentine passageway. Analogously, the ball is moved from the valve seat to open the serpentine passageway when pressure at the tank-side opening is less than the pressure at the vent-side opening by a predetermined pressure differential.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 8, 2024
    Inventors: Rodger Preston Grantham, Douglas Alan Harty, Gregg Marshel
  • Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof
    Patent number: 11795049
    Abstract: A flow-through pressure-vacuum valve includes a valve body having a tank-side opening and a vent-side opening. A pressure relief valve (e.g., a ball held in a corresponding seat by gravity) is positioned within a first passageway through the body. The ball is moved from the first valve seat to open the first passageway when pressure at the tank-side opening exceeds pressure at the vent-side opening by a predetermined pressure differential. A vacuum relief valve is positioned within another passageway (e.g., a serpentine passageway). The vacuum relief valve (e.g., also a ball held in a corresponding seat by gravity) is positioned within the serpentine passageway. Analogously, the ball is moved from the valve seat to open the serpentine passageway when pressure at the tank-side opening is less than the pressure at the vent-side opening by a predetermined pressure differential.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: October 24, 2023
    Assignee: Vapor Systems Technologies, Inc.
    Inventors: Rodger Preston Grantham, Douglas Alan Harty, Gregg Marshel
  • PRESSURE/VACUUM (PV) VALVE FOR FUEL STORAGE TANKS, IN-LINE PRESSURE-VACUUM VALVE TEST UNIT, AND COMBINATION THEREOF
    Publication number: 20220204335
    Abstract: A flow-through pressure-vacuum valve includes a valve body having a tank-side opening and a vent-side opening. A pressure relief valve (e.g., a ball held in a corresponding seat by gravity) is positioned within a first passageway through the body. The ball is moved from the first valve seat to open the first passageway when pressure at the tank-side opening exceeds pressure at the vent-side opening by a predetermined pressure differential. A vacuum relief valve is positioned within another passageway (e.g., a serpentine passageway). The vacuum relief valve (e.g., also a ball held in a corresponding seat by gravity) is positioned within the serpentine passageway. Analogously, the ball is moved from the valve seat to open the serpentine passageway when pressure at the tank-side opening is less than the pressure at the vent-side opening by a predetermined pressure differential.
    Type: Application
    Filed: December 30, 2021
    Publication date: June 30, 2022
    Inventors: Rodger Preston Grantham, Douglas Alan Harty, Gregg Marshel