Patents by Inventor Mao Yang Xu

Mao Yang Xu 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).

  • Ball valve seats and ball valves designed with equilateral triangle section methods
    Patent number: 8864105
    Abstract: It is inevitable for the tight closure of a ball valve to be disturbed by its ball's wedging action, and its ball seat is an upset impulse amplifier with an inherent disturbance resistance index or a sealing maintaining factor m. The ball valve seat designed with equilateral triangle section methods of the invention can positively ensure itself a resistance to ball-wedged disturbance from eccentric drive to make a ball valve realize its tight closure by the floated pressure of balls or seats onto each other and ensure that the ultimate rotational resistance to the ball only relates to the ultimate pressure from/on one seat.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 21, 2014
    Inventors: Changxiang Xu, Mao Yang Xu, Zhanji Chen
  • Ball Valve Seats and Ball Valves Designed with Equilateral Triangle Section Methods
    Publication number: 20110260089
    Abstract: It is inevitable for the tight closure of a ball valve to be disturbed by its ball's wedging action, and its ball seat is an upset impulse amplifier with an inherent disturbance resistance index or a sealing maintaining factor m. The ball valve seat designed with equilateral triangle section methods of the invention can positively ensure itself a resistance to ball-wedged disturbance from eccentric drive to make a ball valve realize its tight closure by the floated pressure of balls or seats onto each other and ensure that the ultimate rotational resistance to the ball only relates to the ultimate pressure from/on one seat.
    Type: Application
    Filed: October 28, 2008
    Publication date: October 27, 2011
    Inventors: Changxiang Xu, Mao Yang Xu, Zhanji Chen