Patents by Inventor Hsin-Jun Liu

Hsin-Jun 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).

  • Patent number: 7115083
    Abstract: A cutting tool holder for a machining center has a body and a fastening device. The fastening device is mounted in the body and has a base, at least two positioning elements and a locking element. The base has an annular wall, a through hole and at least two positioning holes. The through hole is formed through the base. The at least two positioning holes are formed in the annular wall and correspond to the through hole. The at least two positioning elements are located in the at least two positioning holes and engage an annular recess of a seat for a cutting tool to securely yet releasably retain the seat in the base. The locking element is mounted around the base to keep the at least two positioning elements from escaping the at least two positioning holes.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: October 3, 2006
    Assignee: New GIFU Enterprise Co., Ltd.
    Inventor: Hsin-Jun Liu
  • Publication number: 20060065096
    Abstract: A cutting tool holder for a machining center has a body and a fastening device. The fastening device is mounted in the body and has a base, at least two positioning elements and a locking element. The base has an annular wall, a through hole and at least two positioning holes. The through hole is formed through the base. The at least two positioning holes are formed in the annular wall and correspond to the through hole. The at least two positioning elements are located in the at least two positioning holes and engage an annular recess of a seat for a cutting tool to securely yet releasably retain the seat in the base. The locking element is mounted around the base to keep the at least two positioning elements from escaping the at least two positioning holes.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 30, 2006
    Inventor: Hsin-Jun Liu