Patents by Inventor Jiang Z. Shi

Jiang Z. Shi 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).

  • Apparatus and method for gravity casting a motorcycle wheel
    Patent number: 6463994
    Abstract: An improved mold for casting motorcycle wheels includes a wider rim cavity having smooth contours to facilitate the flow of molten metal within the mold cavity.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: October 15, 2002
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: John D. Nitz, Jiang Z. Shi
  • Mold and method for casting a vehicle wheel
    Patent number: 6401797
    Abstract: A mold for casting a vehicle wheel includes a plurality of mold members that cooperate to define a mold cavity. The mold cavity includes an annular rim cavity for casting a wheel rim and a disc cavity for casting a wheel disc. The mold members define a central axis and have a passageway for introducing molten metal into the rim cavity. The rim cavity has a radial width that changes in a circumferential direction between a maximum width portion of the rim cavity located proximally relative to the passageway, and a minimum width portion of the rim cavity located distally relative to the passageway. In a method for casting a vehicle wheel, a mold as described above is provided. Molten metal is introduced through the passageway into the rim cavity to fill the mold cavity and form a wheel casting. The wheel casting is allowed to cool sufficiently to solidify the metal.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: June 11, 2002
    Assignee: Hayes Lammerz International, Inc.
    Inventors: John D. Nitz, Jiang Z. Shi