Patents by Inventor Saeng Yoon Woo

Saeng Yoon Woo 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).

  • Automatic door closure unit
    Patent number: 8677561
    Abstract: The present invention relates to an automatic door closer including: a main housing having the shape of a cylinder; a damper housing adapted to divide the interior of the main housing into an upper chamber and a lower chamber and having oil charged thereinto and a fixed vane formed at one side of the inner peripheral surface thereof in such a manner as to be projected toward the center thereof; a cover fixedly coupled to the upper periphery of the main housing; an activating shaft having one end extended to the outside through the cover in such a manner as to be rotatably supported and the other end rotatably supported against the bottom surface of the main housing through the damper housing; a rotary vane formed integrally to the outer periphery of the activating shaft so as to divide the interior of the damper housing into first and second chambers, together with the fixed vane; a return spring adapted to provide a returning force of returning the activating shaft to an initial setting position at the time
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: March 25, 2014
    Inventor: Saeng Yoon Woo
  • AUTOMATIC DOOR CLOSURE UNIT
    Publication number: 20120144623
    Abstract: The present invention relates to an automatic door closer including: a main housing having the shape of a cylinder; a damper housing adapted to divide the interior of the main housing into an upper chamber and a lower chamber and having oil charged thereinto and a fixed vane formed at one side of the inner peripheral surface thereof in such a manner as to be projected toward the center thereof; a cover fixedly coupled to the upper periphery of the main housing; an activating shaft having one end extended to the outside through the cover in such a manner as to be rotatably supported and the other end rotatably supported against the bottom surface of the main housing through the damper housing; a rotary vane formed integrally to the outer periphery of the activating shaft so as to divide the interior of the damper housing into first and second chambers, together with the fixed vane; a return spring adapted to provide a returning force of returning the activating shaft to an initial setting position at the time
    Type: Application
    Filed: August 25, 2010
    Publication date: June 14, 2012
    Inventor: Saeng Yoon Woo