Patents by Inventor Dong-wook Jerng

Dong-wook Jerng 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).

  • Test apparatus and method for safety valve
    Patent number: 8499610
    Abstract: An apparatus and method for testing the performance of a safety valve. The apparatus includes an accumulator including at least one electric heater for heating a predetermined amount of water in the accumulator, and storing steam produced by the electric heater, a test vessel storing the steam supplied from the accumulator, and providing steam at a test pressure to a safety valve, the steam being supplied after controlling flow rate and pressure, a condensing tank storing demineralized water to be supplied to the accumulator, and condensing and collecting the steam discharged from the safety valve, and a water-supply pump supplying the water stored in the condensing tank to the accumulator.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: August 6, 2013
    Assignee: Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Seung-jong Oh, Dong-wook Jerng, Jong-woon Park, Kab-ju Kwon, Chang-hyun Kim
  • TEST APPARATUS AND METHOD FOR SAFETY VALVE
    Publication number: 20100281954
    Abstract: An apparatus and method for testing the performance of a safety valve. The apparatus includes an accumulator including at least one electric heater for heating a predetermined amount of water in the accumulator, and storing steam produced by the electric heater, a test vessel storing the steam supplied from the accumulator, and providing steam at a test pressure to a safety valve, the steam being supplied after controlling flow rate and pressure, a condensing tank storing demineralized water to be supplied to the accumulator, and condensing and collecting the steam discharged from the safety valve, and a water-supply pump supplying the water stored in the condensing tank to the accumulator.
    Type: Application
    Filed: January 6, 2009
    Publication date: November 11, 2010
    Applicant: KOREA HYDRO & NUCLEAR POWER CO., LTD.
    Inventors: Seung-jong Oh, Dong-wook Jerng, Jong-woon Park, Kab-ju Kwon, Chang-hyun Kim