Patents by Inventor Muh-Wang Liang

Muh-Wang Liang 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).

  • Clamping unit and method for an injection molding machine
    Patent number: 5370524
    Abstract: A clamping unit and method thereof, in which a servo-motor mounted on a rear platen is used for driving two ball screws with pre-load hydraulic cylinders so as to actuate the outward-bending toggle mechanism to provide mold-opening and mold-clamping functions; by using a limited space, a servo-motor mounted on the movable platen is used for driving a nut to turn so as to cause the screw and the ejector bar to be moved back and forth; finally, an electric motor on the rear platen will drive a mold-adjusting mechanism, and a servo-motor mounted on the platen is also operated so as to complete the mold adjustment quickly and automatically.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: December 6, 1994
    Assignee: Industrial Technology Research Institute
    Inventors: Muh-Wang Liang, Lang-Fu Tsai, Sui-Bin Horng