Patents by Inventor Ying Wu Chen

Ying Wu Chen 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).

  • Tool handle having a completely openable configuration
    Patent number: 6431034
    Abstract: A tool device includes a base and a cover handle members having a front portion rotatably secured together and having a rear portion openable to a fully open position for allowing the tool members or tool extensions to be easily engaged into and disengaged from the handle members. The cover handle member includes a notch formed in the front portion for receiving a bulge extended from the front portion of the base handle member. A latch may be used for selectively latching the rear portions of the base and the cover handle members together.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: August 13, 2002
    Inventor: Ying Wu Chen
  • Tool box having spring-biased tool holder
    Patent number: 6070732
    Abstract: A tool box includes a housing having a chamber for rotatably receiving one or more tool holders each of which is pivotally secured to the housing at a pivot shaft. The tool holders may be used for holding the tool bits or the tool members. One or more springs are engaged with the tool holders for biasing the tool holders to rotate about the pivot shaft and to slightly elevate the tool members such that the tool members may be easily obtained. The tool box may include a cover for enclosing the chamber and for forcing the tool holders inward of the housing.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: June 6, 2000
    Inventor: Ying Wu Chen
  • Portable tool combination
    Patent number: D470739
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: February 25, 2003
    Inventor: Ying Wu Chen