Patents by Inventor Zhijun David Zheng

Zhijun David Zheng 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).

  • Thermally biased valve and anti-icing system
    Patent number: 10384786
    Abstract: A valve includes an inlet, an outlet, and a biasing element. The biasing element includes a first spring element, a second spring element, and a valve element. The second spring element includes at least one bimetallic disk including a first and second material. The first material includes a first coefficient of linear thermal expansion, and the second material includes a second coefficient of linear thermal expansion different than the first coefficient of linear thermal expansion. The valve element disposed on an end of the first spring element.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: August 20, 2019
    Assignee: United Technologies Corporation
    Inventors: Michael D. Greenberg, Zhijun David Zheng, Robert Goodman
  • NACELLE ANTI-ICING TROUBLESHOOTING FOR A TWO VALVE SYSTEM
    Publication number: 20180355797
    Abstract: A gas turbine engine anti-icing system troubleshooting method comprising providing an anti-icing system comprising a bleed air source coupled to a pressure regulating valve set having an upper valve coupled end-to-end in series with a lower valve; and an air pressure sensor coupled to the pressure regulating valve set downstream of the pressure regulating valve set; detecting at least one valve fault; checking the upper valve for the at least one valve fault; checking the lower valve for the at least one valve fault; deactivating at least one of the upper valve and the lower valve; and replacing at least one of the upper valve and lower valve.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 13, 2018
    Applicant: United Technologies Corporation
    Inventors: Mainul M. Islam, Dean Fedewa, Zhijun (David) Zheng, Tommy B. Dixon
  • THERMALLY BIASED VALVE AND ANTI-ICING SYSTEM
    Publication number: 20170225791
    Abstract: A valve includes an inlet, an outlet, and a biasing element. The biasing element includes a first spring element, a second spring element, and a valve element. The second spring element includes at least one bimetallic disk including a first and second material. The first material includes a first coefficient of linear thermal expansion, and the second material includes a second coefficient of linear thermal expansion different than the first coefficient of linear thermal expansion. The valve element disposed on an end of the first spring element.
    Type: Application
    Filed: February 5, 2016
    Publication date: August 10, 2017
    Inventors: Michael D. Greenberg, Zhijun David Zheng, Robert Goodman