Patents by Inventor Rongren CAO

Rongren CAO 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).

  • Ball-hinged transmission shaft with straight shaft
    Patent number: 11761491
    Abstract: A ball-hinged transmission shaft with a straight shaft includes a socket, a ball, and a straight shaft. A rolling element is further coaxially provided on a straight shaft. The rolling element is a rotator with an axis of the straight shaft as a center of rotation. An upper portion of the rolling element is connected to a bearing. A mouth-shaped surface is further respectively provided at two ends of a transmission hole of a ball. The mouth-shaped surface is a curved surface matching the shape of the rolling element. The rolling element is fit and provided in the mouth-shaped surface at the two ends of the transmission hole of the ball. The ball is restricted by an inner positioning spherical surface of a socket, the straight shaft, and the rolling element at the same time.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: September 19, 2023
    Assignee: QINGDAO ACME INNOVATION TECHNOLOGY CO., LTD.
    Inventors: Dewei Zhu, Xiaoyu Rong, Rongren Cao
  • BALL-HINGED TRANSMISSION SHAFT WITH STRAIGHT SHAFT
    Publication number: 20230213069
    Abstract: A ball-hinged transmission shaft with a straight shaft includes a socket, a ball, and a straight shaft. A rolling element is further coaxially provided on a straight shaft. The rolling element is a rotator with an axis of the straight shaft as a center of rotation. An upper portion of the rolling element is connected to a bearing. A mouth-shaped surface is further respectively provided at two ends of a transmission hole of a ball. The mouth-shaped surface is a curved surface matching the shape of the rolling element. The rolling element is fit and provided in the mouth-shaped surface at the two ends of the transmission hole of the ball. The ball is restricted by an inner positioning spherical surface of a socket, the straight shaft, and the rolling element at the same time.
    Type: Application
    Filed: August 2, 2021
    Publication date: July 6, 2023
    Applicant: QINGDAO ACME INNOVATION TECHNOLOGY CO., LTD.
    Inventors: Dewei ZHU, Xiaoyu RONG, Rongren CAO