Patents by Inventor Chen Shih-Yueh

Chen Shih-Yueh 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).

  • Publication number: 20040177725
    Abstract: A socket replaceable ratchet wrench generally comprises a base body of the wrench, in which a pair of pawls, a control rod, a force block, an oscillating piece and a socket. The timely engagement and disengagement between the pawls and the socket can be accomplished by virtue of the cooperation between the control rod and the oscillating piece so as to provide an effect of multipurpose. In addition, by taking advantage of the conical surface of the force block to enable the two pawls to move along it and then force the same to disengage from the teeth of the socket, such that socket can be removed and replaced.
    Type: Application
    Filed: July 9, 2003
    Publication date: September 16, 2004
    Inventor: Chen Shih-Yueh