Patents by Inventor Zhengwei Cao

Zhengwei 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).

  • Publication number: 20170332874
    Abstract: Described herein is a rotary mop and a rotary structure of a mop handle of the rotary mop. The rotary structure comprises a rotary cylinder of which the inner wall is provided with spiral grooves and a lifting rod penetrating through the rotary cylinder, wherein the lifting rod is provided with a unidirectional rotary one-way bearing, bulges matched with the spiral grooves are apart arranged outside the one-way bearing, when the lifting rod is pressed downwards, the one-way bearing stops rotation, and the bulges and the spiral grooves are mutually matched to drive the rotary cylinder to rotate; and when the lifting rod is pulled upwards, the one-way bearing idly rotates along the spiral grooves. The bottom of the rotary cylinder is provided with a bottom plate for sealing the rotary cylinder, and lubricating oil or lubricating grease is provided in the rotary cylinder.
    Type: Application
    Filed: December 15, 2016
    Publication date: November 23, 2017
    Inventor: Zhengwei Cao
  • Patent number: 9808138
    Abstract: Described herein is a rotary mop and a rotary structure of a mop handle of the rotary mop. The rotary structure comprises a rotary cylinder of which the inner wall is provided with spiral grooves and a lifting rod penetrating through the rotary cylinder, wherein the lifting rod is provided with a unidirectional rotary one-way bearing, bulges matched with the spiral grooves are apart arranged outside the one-way bearing, when the lifting rod is pressed downwards, the one-way bearing stops rotation, and the bulges and the spiral grooves are mutually matched to drive the rotary cylinder to rotate; and when the lifting rod is pulled upwards, the one-way bearing idly rotates along the spiral grooves. The bottom of the rotary cylinder is provided with a bottom plate for sealing the rotary cylinder, and lubricating oil or lubricating grease is provided in the rotary cylinder.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 7, 2017
    Assignee: Zhejiang DiMei Intelligent Technology Co., Ltd
    Inventor: Zhengwei Cao