Patents by Inventor Ylnghui Liu

Ylnghui 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).

  • Hydraulic steering unit
    Patent number: 10895328
    Abstract: A hydraulic steering unit is described comprising a housing (1) and a non-return valve (2) having a ball (3) and a valve seat (4) at an end of a channel (5) in the housing (1), wherein a movement of the ball (3) away from the valve seat (4) is limited by an abutment (7) in the channel (5). Such a steering unit should have a non-return valve which can be produced with low costs. To this end the abutment (7) extends transversely through the channel.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 19, 2021
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventors: Nils E. Sevelsted, Ylnghui Liu