Patents by Inventor Zhengzan Shi

Zhengzan 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).

  • Spray arm, and Water Pumping Mechanism and Cleaning Machine Thereof
    Publication number: 20240041295
    Abstract: A spray arm, a water pumping mechanism and a cleaning machine thereof are disclosed in the present invention. The spray arm comprises a body (1;1?) and a top plate (2;2?). An air collection chamber (20;20?) is defined between the top plate (2;2?) and the top surface (1a; 1a?) of the body (1;1?), a plurality of water spray holes (13) is arranged in the air collection chamber (20;20?), the top plate (2;2?) has a plurality of spray openings (21) each corresponding to one water spray hole (13), and a gap (100) is formed between a top end of each water spray hole (13) and a bottom end of the corresponding spray opening (21).
    Type: Application
    Filed: January 26, 2022
    Publication date: February 8, 2024
    Inventors: Shuhan Zhao, Feng Zheng, Benzhu Wei, Yonglei Yao, Zhengzan Shi, Changhai Zhang, Jianjian Han, Yong Jiang