Patents by Inventor Chunming Rao

Chunming Rao 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).

  • Patent number: 11647813
    Abstract: A quick lacing machine is disclosed, including a base, a screw cap, a pulley, a rotating wheel, a rotary driving member, an elastic member, and a pressing member. The base is provided with a rotating cavity, a lace hole and a ratchet; the pulley is rotatably arranged in the rotating cavity, and the pulley is provided with a plurality of a first spiral teeth; the rotating wheel is provided with a pawl, the pawl is engaged with the ratchet, and the rotating wheel is provided with a sliding hole, the rotary driving member is slidably arranged in the sliding hole. The present disclosure can loosen a shoelace by pressing the pressing member, and tighten the shoelace by rotating the screw cap, which is simple and convenient to operate, saves time and effort, and thereby improving efficiency of a user taking off and putting on shoes.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: May 16, 2023
    Inventor: Chunming Rao