Patents by Inventor Xiaohan GAO

Xiaohan GAO 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).

  • Hydraulic control valve assembly of automatic steering system for agricultural machine
    Patent number: 10330129
    Abstract: Disclosed is a hydraulic control valve assembly of automatic steering system for agricultural machine including a proportional directional valve (3). A balancing valve (1) is arranged between the proportional directional valve (3) and the steering cylinder. A first shuttle valve (2) is arranged between the proportional directional valve (3) and the balancing valve (1). The first shuttle valve (2) is positioned on one side of the proportional directional valve (3). An overflow valve (4) is positioned on another side of the proportional directional valve (3). The overflow valve (4) is connected to a second shuttle valve (6) and a logic valve (5) respectively. The hydraulic control valve assembly has a large control power, a rapid response, and is more suitable for the autonomous navigation operation of agricultural machine. Moreover, the system saves more energy, such that the autonomous navigation operation of agricultural machine is more stable.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: June 25, 2019
    Assignee: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Guangjie Cao, Yanping Zhao, Wending Dai, Anbang Wang, Xiaohan Gao, Xunye Mao, Kai Chen
  • HYDRAULIC CONTROL VALVE ASSEMBLY OF AUTOMATIC STEERING SYSTEM FOR AGRICULTURAL MACHINE
    Publication number: 20170370383
    Abstract: Disclosed is a hydraulic control valve assembly of automatic steering system for agricultural machine including a proportional directional valve (3). A balancing valve (1) is arranged between the proportional directional valve (3) and the steering cylinder. A first shuttle valve (2) is arranged between the proportional directional valve (3) and the balancing valve (1). The first shuttle valve (2) is positioned on one side of the proportional directional valve (3). An overflow valve (4) is positioned on another side of the proportional directional valve (3). The overflow valve (4) is connected to a second shuttle valve (6) and a logic valve (5) respectively. The hydraulic control valve assembly has a large control power, a rapid response, and is more suitable for the autonomous navigation operation of agricultural machine. Moreover, the system saves more energy, such that the autonomous navigation operation of agricultural machine is more stable.
    Type: Application
    Filed: July 4, 2016
    Publication date: December 28, 2017
    Applicant: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Guangjie CAO, Yanping ZHAO, Wending DAI, Anbang WANG, Xiaohan GAO, Xunye MAO, Kai CHEN