Patents by Inventor Changzhen Liu

Changzhen Liu 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).

  • Autonomous wall cleaner
    Patent number: 10357140
    Abstract: An autonomous wall cleaner is disclosed. The autonomous wall cleaner comprises a vacuum generator, a number of suction cups, a number of wheels, a number of first actuators, a cleaning element and a controller located on a frame. The wheels are symmetrically arranged on both sides of the frame. The first actuator is capable of driving the wheels. Each suction cup is connected with the vacuum generators and has a sliding disk and an elastic bowl. When the wheels are moving on the wall, the suction cups are sucking to the wall and sliding.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 23, 2019
    Inventors: Changzhen Liu, Sixin Chen
  • AUTONOMOUS WALL CLEANER
    Publication number: 20180168415
    Abstract: An autonomous wall cleaner is disclosed. The autonomous wall cleaner comprises a vacuum generator, a number of suction cups, a number of wheels, a number of first actuators, a cleaning element and a controller located on a frame. The wheels are symmetrically arranged on both sides of the frame. The first actuator is capable of driving the wheels. Each suction cup is connected with the vacuum generators and has a sliding disk and an elastic bowl. When the wheels are moving on the wall, the suction cups are sucking to the wall and sliding.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: Changzhen Liu, Sixin Chen