Patents by Inventor Kean-Tuan Tan

Kean-Tuan Tan 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).

  • Ratcheting tool driver
    Patent number: 7222557
    Abstract: A ratcheting tool driver has a handle and a ratcheting body that includes a plurality of recesses for receiving a plurality of pawls having teeth formed thereon. A cover is axially secured to the ratcheting body and rotates relative to the body over a limited distance. The cover is formed so that it interacts with the plurality of pawls, which are operatively received in the body recesses so that they engage and disengage teeth formed on a socket ring. The socket ring contains a plurality of teeth on its outer circumference, is received in an axial bore formed in the ratcheting body, and operatively engages the pawl teeth.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: May 29, 2007
    Assignee: Easco Hand Tools, Inc.
    Inventors: Peng Li, Zhihong Fu, Kean-Tuan Tan, John Michael Underbrink
  • RATCHETING TOOL DRIVER
    Publication number: 20070062340
    Abstract: A ratcheting tool driver has a handle and a ratcheting body that includes a plurality of recesses for receiving a plurality of pawls having teeth formed thereon. A cover is axially secured to the ratcheting body and rotates relative to the body over a limited distance. The cover is formed so that it interacts with the plurality of pawls, which are operatively received in the body recesses so that they engage and disengage teeth formed on a socket ring. The socket ring contains a plurality of teeth on its outer circumference, is received in an axial bore formed in the ratcheting body, and operatively engages the pawl teeth.
    Type: Application
    Filed: September 21, 2005
    Publication date: March 22, 2007
    Inventors: Peng Li, Zhihong Fu, Kean-Tuan Tan, John Underbrink