Patents by Inventor Chih-Sung Chi

Chih-Sung Chi 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).

  • Patent number: 6715211
    Abstract: A mounting and fixing structure of a handle and a tool head of a hand tool includes an urging ring, a fixing seat, a saw blade, an insertion shank, an insertion pin, and a screw. In such a manner, the saw blade may be retained by the insertion shank rigidly and stably, and the insertion shank may be secured in the mounting hole of the socket of the handle rigidly and stably, so that the saw blade may be secured on the handle rigidly and stably.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: April 6, 2004
    Inventor: Chih-Sung Chi
  • Patent number: 5584123
    Abstract: A mounting/carrying device for blades includes a shank having at least one receiving compartment longitudinally extending therethrough for receiving a blade therein and a guiding slot longitudinally extending in one lateral side thereof and communicated with the receiving compartment, a retainer plate provided in the receiving compartment and comprising a groove defined in a first side thereof for receiving a blade end portion of the blade, a fastener element for securely fastening the blade to the retainer plate, and an accommodating compartment having an open end for receiving replacement blades therein. The groove of the retainer plate includes first and second groove sections defined in one side thereof, the first groove section being straight while the second groove section being at an angle with the first groove section.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: December 17, 1996
    Inventor: Chih-Sung Chi
  • Patent number: 5212870
    Abstract: An edge planer including a tube having two end portions, a slot longitudinally formed in the tube, one or more blade edges formed in the tube, a strip engaged in the slot, a handgrip engaged on each of the end portions of the tube, screws fixing the handgrips and the strip together, whereby, the blade edge is located between the handgrips in order to plane an edge portion of a workpiece.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: May 25, 1993
    Inventor: Chih-Sung Chi
  • Patent number: D499628
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 14, 2004
    Inventor: Chih-Sung Chi