Patents by Inventor Gangzhong Xu

Gangzhong Xu 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).

  • Swinging hula hoop
    Patent number: 11446533
    Abstract: The present invention discloses a swinging hula hoop, including a hula hoop body, the hula hoop body including a plurality of connecting pieces detachably connected end to end, and a side of the connecting piece close to the waist of a human body being provided with a first kneading device configured to transversely knead and massage the waist of the human body when the hula hoop is used; the first kneading device includes: a roller carrier provided on the side of the connecting piece close to the waist of the human body; and at least one first massage roller rotatably provided on the roller carrier and configured to transversely knead and massage the waist of the human body.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: September 20, 2022
    Inventor: Gangzhong Xu
  • Swing hula hoop
    Patent number: D977021
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: January 31, 2023
    Inventor: Gangzhong Xu