Patents by Inventor Yen-Fei Liu

Yen-Fei 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).

  • ANTI-DETACHMENT STRUCTURE FOR A KNIFE AND KNIFE SHEATH
    Publication number: 20020152617
    Abstract: An anti-detachment structure for a knife and knife sheath, including a knife and a knife sheath. The knife has a fixing section and the knife sheath is provided with a resilient member and a linearly movable driving block. By means of coordinate operation of the driving block, resilient member and fixing section, the knife can be easily extracted out of the knife sheath.
    Type: Application
    Filed: April 19, 2001
    Publication date: October 24, 2002
    Inventor: Yen-Fei Liu
  • Anti-detachment structure for a knife and knife sheath
    Patent number: 6457240
    Abstract: An anti-detachment structure for a knife and knife sheath, including a knife and a knife sheath. The knife has a fixing section and the knife sheath is provided with a resilient member and a linearly movable driving block. By means of coordinate operation of the driving block, resilient member and fixing section, the knife can be easily extracted out of the knife sheath.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: October 1, 2002
    Inventor: Yen-Fei Liu