Patents by Inventor Shangda Chen

Shangda 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).

  • Slow closing door hinge
    Patent number: 9957743
    Abstract: A slow-closing door hinge, includes a first foldout and a second foldout having a shaft sleeve respectively. A fixed rod mounted in the sleeve of the first foldout, and a rotating rod mounted in the sleeve of the second foldout are connected by a connecting rod. The connecting rod and the fixed rod are movably connected, with a hollow groove at the joint. A restoring spring in contact with the fixed rod and fixed to the connecting rod in the hollow groove. The connecting rod is connected with the rotating rod in a coaxial, rotationally actuating manner. The forward and backward rotation of the fixed rod and the rotating rod cooperates with the restoring spring to drive the connecting rod in a reciprocal motion within the shaft sleeve.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: May 1, 2018
    Inventors: Zheng Chen, Shangda Chen
  • A SLOW-CLOSING DOOR HINGE
    Publication number: 20150361708
    Abstract: A slow-closing door hinge, includes a first foldout and a second foldout having a shaft sleeve respectively. A fixed rod mounted in the sleeve of the first foldout, and a rotating rod mounted in the sleeve of the second foldout are connected by a connecting rod. The connecting rod and the fixed rod are movably connected, with a hollow groove at the joint. A restoring spring in contact with the fixed rod and fixed to the connecting rod in the hollow groove. The connecting rod is connected with the rotating rod in a coaxial, rotationally actuating manner. The forward and backward rotation of the fixed rod and the rotating rod cooperates with the restoring spring to drive the connecting rod in a reciprocal motion within the shaft sleeve.
    Type: Application
    Filed: January 24, 2014
    Publication date: December 17, 2015
    Inventors: Zheng CHEN, Shangda CHEN
  • Door hinge with a built-in damper
    Patent number: 5867866
    Abstract: A door hinge assembly with a damper mechanism composing a cylindrical housing with caps on both ends, a shaft eccentrically mounted on the cylindrical body, and two plates mounted on the shaft. Two chambers are constructed with the above arrangement and both chambers are filled with oil-hydraulic fluid. When the shaft rotates with respective to the cylindrical body, one of the two chambers is compressed. With means of communicating the two chambers, a desirable dampening force is obtained. Bias spring(s) can be incorporated into this door hinge assembly to provide closing force, so this assembly functions as a door closer.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: February 9, 1999
    Inventors: Zheng Chen, Shangda Chen