Patents by Inventor Rubao Liu

Rubao Liu 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).

  • Publication number: 20180206410
    Abstract: A hedge trimmer includes a motor, a first blade, a second blade, a support bar, limiting elements, buffer gaskets and connecting rods. The first blade is formed with first installing holes. The second blade is formed with second installing holes. The support bar extends along a longitudinal direction and is configured to install the first blade and the second blade. The motor drives the first blade. Each limiting element is provided with a limiting plane. Each buffer gasket is formed with a connecting hole. Each connecting rod is connected to one of the limiting elements after successively penetrating through one of the second installing holes, one of the first installing holes and the connecting hole along a predetermined direction perpendicular to the longitudinal direction. A distance from the limiting plane to the first blade is greater than a thickness of one of the buffer gaskets.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 26, 2018
    Inventors: Rubao Liu, Fei Wang
  • Patent number: 8545143
    Abstract: The router of the present invention includes a motor housing for enclosing a motor, a support foot for receiving the motor housing, and an adjustment rod mounted to the support foot. The adjustment rod includes a first engagement part and the motor housing includes a second engagement part matched with the first engagement part. The adjustment rod can move between a first position where the first engagement part engages the second engagement part, and a second position where the first engagement part disengages from the second engagement part. As a result, both a fine and a coarse cutting depth adjustment are performed conveniently and easily.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: October 1, 2013
    Assignee: Chervon Limited
    Inventor: Rubao Liu
  • Publication number: 20100150679
    Abstract: The router of the present invention includes a motor housing for enclosing a motor, a support foot for receiving the motor housing, and an adjustment rod mounted to the support foot. The adjustment rod includes a first engagement part and the motor housing includes a second engagement part matched with the first engagement part. The adjustment rod can move between a first position where the first engagement part engages the second engagement part, and a second position where the first engagement part disengages from the second engagement part. As a result, both a fine and a coarse cutting depth adjustment are performed conveniently and easily.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Inventor: Rubao Liu