Patents by Inventor Hung Wen Wu

Hung Wen Wu 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).

  • Patent number: 6932306
    Abstract: A suction device having a suction cup; a pulling bar, the pulling bar having a first end coupled to the suction cup and an opposed second end; a cover having a spiral guiding ring, the spiral guiding ring having a flange on an inner surface; a spiral guiding cap having a rib, the spiral guiding cap being rotatably coupled to the spiral guiding ring so that the flange moves along the rib when the spiral guiding cap is rotated and a locking cap coupled to the second end of the pulling bar, the locking cap having a head positionable against the spiral guiding cap; wherein the spiral guiding cap is turned less than 360 degrees to reach a fully engaged condition.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: August 23, 2005
    Inventors: Den Jun Zou, Hung Wen Wu
  • Publication number: 20040079848
    Abstract: A suction device having a suction cup; a pulling bar, the pulling bar having a first end coupled to the suction cup and an opposed second end; a cover having a spiral guiding ring, the spiral guiding ring having a flange on an inner surface; a spiral guiding cap having a rib, the spiral guiding cap being rotatably coupled to the spiral guiding ring so that the flange moves along the rib when the spiral guiding cap is rotated and a locking cap coupled to the second end of the pulling bar, the locking cap having a head positionable against the spiral guiding cap; wherein the spiral guiding cap is turned less than 360 degrees to reach a fully engaged condition.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Inventors: Hung Wen Wu, De Jun Zou