Patents by Inventor Jian-Kuen Liaw

Jian-Kuen Liaw 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).

  • Structures of clamp head of numerically controlled cutting tool
    Patent number: 5275516
    Abstract: A clamp head of numerically controlled cutting tool comprising front and rear sleeves and a main shaft. The rear sleeve is provided with a channel, while the tapered main shaft is composed of oil groove and hole. The front and the rear sleeves and the main shaft are united as a unitary body. The front and the rear sleeves are further provided with a nozzle apparatus permitting the coolant to be injected with precision on the working point.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: January 4, 1994
    Inventor: Jian-Kuen Liaw