Patents by Inventor Ka Fai Kinsen Au

Ka Fai Kinsen Au 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).

  • Hinge structure and packaging box with it
    Patent number: 11788333
    Abstract: The application provides a hinge structure comprising a first connecting piece provided with a slot and a second connecting piece provided with a rotating shaft. An inner wall of the slot is provided with a limiting slot and an outer surface of the rotating shaft is convex to form a clipping strip; the clipping strip is inserted into the limiting slot to limit a relative rotation angle between the first connecting piece and the second connecting piece. The present application also provides a packaging box comprising the above hinge structure. The hinge structure and the packing box are provided with a limiting slot in the slot and a clipping strip on the rotating shaft. Through the cooperation between the clipping strip and the limiting slot, the relative rotation angle between the first connecting piece and the second connecting piece is fixed and the reliability of the hinge structure is improved.
    Type: Grant
    Filed: January 29, 2022
    Date of Patent: October 17, 2023
    Assignee: Nationalpak Limited
    Inventor: Ka Fai Kinsen Au
  • HINGE STRUCTURE AND PACKAGING BOX WITH IT
    Publication number: 20220267057
    Abstract: The application provides a hinge structure comprising a first connecting piece provided with a slot and a second connecting piece provided with a rotating shaft. An inner wall of the slot is provided with a limiting slot and an outer surface of the rotating shaft is convex to form a clipping strip; the clipping strip is inserted into the limiting slot to limit a relative rotation angle between the first connecting piece and the second connecting piece. The present application also provides a packaging box comprising the above hinge structure. The hinge structure and the packing box are provided with a limiting slot in the slot and a clipping strip on the rotating shaft. Through the cooperation between the clipping strip and the limiting slot, the relative rotation angle between the first connecting piece and the second connecting piece is fixed and the reliability of the hinge structure is improved.
    Type: Application
    Filed: January 29, 2022
    Publication date: August 25, 2022
    Inventor: Ka Fai Kinsen Au
  • Jewelry box
    Patent number: 5810162
    Abstract: A jewelry box includes a case body, at least a cover lip and at least a hinge means for connecting the cover lip to the case body. The case body has an interior cavity defined therein and at least a side opening. The cover lip has a size adapted to cover the side opening of the case body. The hinge means comprises a first piece and a second piece pivotally connected with the first piece. The first piece is affixed to a bottom edge portion of the cover lip and the second piece is affixed to the bottom wall of the case body. The jewelry box may further includes a holder means disposed therein for holding a jewelry or a watch inside the inner cavity.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: September 22, 1998
    Assignee: Nationalpak Limited
    Inventors: Ka Fai Kinsen Au, Ho Ching Au
  • Display box
    Patent number: D502393
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: March 1, 2005
    Inventor: Ka Fai Kinsen Au
  • Slope shaped display box
    Patent number: D510701
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: October 18, 2005
    Inventor: Ka Fai Kinsen Au
  • Jewelry box
    Patent number: D400707
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: November 10, 1998
    Inventor: Ka Fai Kinsen Au
  • Jewelry box
    Patent number: D401061
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: November 17, 1998
    Inventor: Ka Fai Kinsen Au