Patents by Inventor Li-Yun Chu

Li-Yun Chu 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).

  • Angle-adjustable connector
    Publication number: 20040032123
    Abstract: An angle-adjustable connector is constructed to include two coupling members connectable to a tool and an air compressor/hydraulic press respectively, a connecting tube connected between the coupling members, the connecting tube having two spherical end portions respectively coupled to the coupling members and secured thereto by steel balls for enabling the coupling members to be turned relative to the connecting tube in different directions to different angles, and a bellows sleeve connected between the coupling members around the connecting tube.
    Type: Application
    Filed: August 13, 2002
    Publication date: February 19, 2004
    Inventor: Li-Yun Chu
  • Auto rewind hose reel
    Patent number: D476879
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: July 8, 2003
    Inventor: Li-Yun Chu