Patents by Inventor Chen Min-Chin

Chen Min-Chin 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).

  • High speed two travels thread rolling machine
    Patent number: 4369644
    Abstract: Disclosed herein is a new mechanism for making screws. It consists of two stationary segmented dies and an intermediate rotary die and by means of rotation, the rotary die threads working pieces which become screws. It includes a pneumatic feeding holder so that working pieces can be fed into the rotary die accurately and quickly and with the action of double die dual path, a high speed mass production is achieved.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: January 25, 1983
    Inventors: Chen Min-Chin, Chen Tung-Chen