Patents by Inventor Ka-Kee Wong

Ka-Kee Wong 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).

  • Yarn snarling testing apparatus and method
    Patent number: 7219556
    Abstract: A process for measuring snarling properties of a yarn is provided. Firstly a first and a second point of the yarn are held in close proximity, and a portion of the yarn between the two points is of a predetermined length. A predetermined tension force is temporarily exerted to the portion of the yarn, and simultaneously the portion of the yarn is temporarily restricted from twisting when the tension force is exerted. Then the portion of the yarn is released from the tension force such that the portion of the yarn is able to twist freely so as to form snarls thereon. Thereafter, the snarling properties of the yarn are measured by detecting an amount of the snarls thereby formed.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: May 22, 2007
    Assignee: The Hong Kong Polytechnic University
    Inventors: Charlotte Murrells, Ka-Kee Wong, Xiaoming Tao, Bingang Xu
  • Yarn snarling testing apparatus and method
    Publication number: 20060144122
    Abstract: A process for measuring snarling properties of a yarn is provided. Firstly a first and a second point of the yarn are held in close proximity, and a portion of the yarn between the two points is of a predetermined length. A predetermined tension force is temporarily exerted to the portion of the yarn, and simultaneously the portion of the yarn is temporarily restricted from twisting when the tension force is exerted. Then the portion of the yarn is released from the tension force such that the portion of the yarn is able to twist freely so as to form snarls thereon. Thereafter, the snarling properties of the yarn are measured by detecting an amount of the snarls thereby formed.
    Type: Application
    Filed: November 26, 2004
    Publication date: July 6, 2006
    Inventors: Charlotte Murrells, Ka-Kee Wong, Xiaoming Tao, Bingang Xu