Patents by Inventor Mohammad Ali Al-Qahtani

Mohammad Ali Al-Qahtani 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).

  • Utilizing clean gas to reliably operate main and pilot relief valve
    Patent number: 10330210
    Abstract: A relief valve assembly including a main relief valve and a pilot relief valve. The main relief valve is positioned adjacent a valve seat of a pressure vessel containing a sour gas. The main relief valve includes a main valve diaphragm selectively sealable against the valve seat of the pressure vessel and enclosing a valve dome containing an inert clean gas and includes a hollow valve tube in pressure communication with the valve dome. The pilot relief valve is in pressure communication with the pressure vessel and the valve dome, and includes a pilot seat selectively sealable against the hollow valve tube. The pilot relief valve includes a biasing mechanism in communication with the pilot seat to urge the pilot seat toward sealed engagement with the hollow valve tube and a sense diaphragm attached to the pilot seat and enclosing a sense cavity in pressure communication with the valve dome.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: June 25, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: Mohammad Ali Al-Qahtani
  • UTILIZING CLEAN GAS TO RELIABLY OPERATE MAIN AND PILOT RELIEF VALVE
    Publication number: 20180017178
    Abstract: A relief valve assembly including a main relief valve and a pilot relief valve. The main relief valve is positioned adjacent a valve seat of a pressure vessel containing a sour gas. The main relief valve includes a main valve diaphragm selectively sealable against the valve seat of the pressure vessel and enclosing a valve dome containing an inert clean gas and includes a hollow valve tube in pressure communication with the valve dome. The pilot relief valve is in pressure communication with the pressure vessel and the valve dome, and includes a pilot seat selectively sealable against the hollow valve tube. The pilot relief valve includes a biasing mechanism in communication with the pilot seat to urge the pilot seat toward sealed engagement with the hollow valve tube and a sense diaphragm attached to the pilot seat and enclosing a sense cavity in pressure communication with the valve dome.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 18, 2018
    Inventor: Mohammad Ali Al-Qahtani