Patents by Inventor Ho L. Chen

Ho L. 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).

  • Punching machine for making different products at the same step
    Patent number: 4355530
    Abstract: A press is disclosed having an upper set and a lower set of dies which open and close simultaneously during the operating cycle. An upright body frame member carries the lower die of each of the upper and lower sets of dies. A sliding member is mounted for reciprocal vertical movement and carries the top die for each of the upper and lower dies sets. The sliding member is provided with a recess for receiving an eccentric cam for actuating the slide.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: October 26, 1982
    Inventor: Ho L. Chen