Patents by Inventor Pingzhong Shi

Pingzhong Shi 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: 11904925
    Abstract: A folding stroller, including a frame capable of being unfolded and folded, and a front wheel and a rear wheel, wherein the frame including a push rod connected to the front wheel at a bottom, and a rear support connected to the rear wheel at a bottom, any two of the push rod, the front support and the rear support are rotatably connected with each other, the remaining one is rotatably connected to at least one of the two, and when the frame is in an unfolded state, the push rod, the front support and the rear support are unfolded with respect to one another, and when the frame is in a folded state, the push rod, the front support and the rear support are close to one another, and the front wheel and the rear wheel are turned so that axles thereof extend along a front-rear direction.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: February 20, 2024
    Assignee: GOODBABY CHILD PRODUCTS CO., LTD.
    Inventors: Fusheng Ma, Xingrong Zhang, Yang Zhang, Pingzhong Shi
  • Publication number: 20220348248
    Abstract: A child stroller includes a stroller frame having an unfolded state and a first folded state, and includes a left support frame on a left side, a right support frame on a right side. Each of the left support frame and the right support frame includes a first bottom frame and a second bottom frame being a telescopic rod assembly, and includes an upper rod with a lower end portion connected to one of the second wheel assemblies and a lower rod disposed below the upper rod and slidably connected to the upper rod in an up-down direction. When the stroller frame in the unfolded state, one of the first bottom frame and the second bottom frame is inclined upward from front to rear, and the other one is inclined upward from rear to front.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 3, 2022
    Inventors: Fusheng Ma, Pingzhong Shi
  • Publication number: 20210380155
    Abstract: A folding stroller, including a frame capable of being unfolded and folded, and a front wheel and a rear wheel, wherein the frame including a push rod connected to the front wheel at a bottom, and a rear support connected to the rear wheel at a bottom, any two of the push rod, the front support and the rear support are rotatably connected with each other, the remaining one is rotatably connected to at least one of the two, and when the frame is in an unfolded state, the push rod, the front support and the rear support are unfolded with respect to one another, and when the frame is in a folded state, the push rod, the front support and the rear support are close to one another, and the front wheel and the rear wheel are turned so that axles thereof extend along a front-rear direction.
    Type: Application
    Filed: November 14, 2019
    Publication date: December 9, 2021
    Inventors: Fusheng Ma, Xingrong Zhang, Yang Zhang, Pingzhong Shi