Patents by Inventor Hung Yuen Cheng

Hung Yuen Cheng 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).

  • Ring binder mechanism
    Patent number: 8414212
    Abstract: A ring binder mechanism includes an elongate plate having a longitudinal axis. Hinge plates are supported by the plate for pivoting relative to the elongate plate. Ring members are mounted on the hinge plates and moveable between a closed position and an open position. A control structure is supported by the elongate plate and controllably pivots the hinge plates to move the ring members between the closed and open positions. The control structure has a travel bar connected to the hinge plates for moving the hinge plates between the closed and open positions. A spring biases the travel bar toward the closed position.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: April 9, 2013
    Inventors: Hung Yuen Cheng, Ho Ping Cheng