Patents by Inventor Songfu Hu

Songfu Hu 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).

  • Patent number: 9919450
    Abstract: A log splitter having an activation lever and a safety lever that defines a pawl configured to engage with a detent associated with the activation lever in an unactivated position so that the activation lever cannot be rotated unless the safety lever is first rotated out of a safety position to remove the pawl from the detent.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: March 20, 2018
    Assignee: YTL International Inc.I
    Inventors: SongFu Hu, Steve Vanderburgh
  • Publication number: 20170144326
    Abstract: A log splitter having an activation lever and a safety lever that defines a pawl configured to engage with a detent associated with the activation lever in an unactivated position so that the activation lever cannot be rotated unless the safety lever is first rotated out of a safety position to remove the pawl from the detent.
    Type: Application
    Filed: November 20, 2015
    Publication date: May 25, 2017
    Inventors: SongFu Hu, Steve Vanderburgh
  • Publication number: 20120280159
    Abstract: A log splitter hydraulic cylinder control valve comprises a valve body comprising one or more openings, oil pathways and steps; a screwed spool engaged with the valve body, a valve seat connected with the spool, a torsion spring disposed between the valve body and a handle mount, and a handle connected to the handle mount, wherein turning the handle operates the screwed spool to turn and block or unblock an oil pathway inside the valve body to force oil to enter the cylinder or for oil to return to an oil tank. The spool includes coarse portion having threads, a spline joint which connects to the handle, and a ball head. The valve seat has an internal bore having coarse threads and threads on the outer surface. Dual-handle control is obtained when two steps are added on the valve body and two screwed valves are installed.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: Jiashan Superpower Tools Co., Ltd.
    Inventors: Yuxin Lu, Zhongcheng Peng, Songfu Hu