Patents by Inventor Guifeng Liu

Guifeng 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).

  • Publication number: 20240039835
    Abstract: Embodiments of this application disclose a packet processing method and a related device, to save access control list resources. A first network device receives a packet sent by a second network device. The packet reaches the first network device through a tunnel between the first network device and the second network device. The first network device determines a reserved port that is of the first network device and that corresponds to a port of the tunnel. The first network device processes the packet based on the reserved port.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 1, 2024
    Inventors: Chenchen Guan, Guifeng Liu
  • Publication number: 20180157863
    Abstract: The present disclosure provides a method and an apparatus for storing privacy information based on an application. The method includes: after monitoring that the application has been started, receiving a file read/write request from the started application, and redirecting the file read/write request to a use trace file mapped by an identifier of the application and preset in a memory; performing a read/write operation corresponding to the file read/write request on the use trace file; and after monitoring that the application exits, erasing the use trace file mapped by the application in the memory according to a preset erasing strategy.
    Type: Application
    Filed: August 18, 2016
    Publication date: June 7, 2018
    Inventors: Zhifei TAO, Zhifeng CHEN, Guifeng LIU
  • Publication number: 20130263947
    Abstract: A pumping mechanism and the distributing valve thereof and a concrete pumping machine are disclosed. The distributing valve includes a valve casing (100) and a valve core (200) located in the pumping chamber of the valve casing. The valve core is rotatably connected to the valve casing, thus forming a main rotating axis (O). The valve casing has a discharge hole (103) throughout the casing wall, a first suction hole (101) and a second suction hole (102). The valve core has a distributing port (202) and a feed port (201) communicated with a material container. A pumping channel is formed between the peripheral face of the valve core and the inner wall face of the pumping chamber. The peripheral face of the valve core is provided with two cutting plates (210) protruding from two sides of the distributing port respectively. The outer side faces of the two cutting plates are rotatably sealedly matched with the sealing face of the valve casing.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 10, 2013
    Applicants: SANY HEAVY INDUSTRY CO., LTD., HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD.
    Inventors: Yongjiao Liang, Guifeng Liu
  • Publication number: 20120318390
    Abstract: A distribution valve for a concrete pump, the concrete pump, a control method thereof and a concrete pump truck are provided. The distribution valve comprises a valve body (200) and a wear resistance plate (300). The valve body (200) comprises a first suction pipe (210) and a first pumping pipe (220), the rear end of the first suction pipe (210) is communicated with an outlet (401) of a material container (400) so as to communicate the material container (400) and a conveying cylinder. The rear end of the first pumping pipe (220) is rotatablely connected with a delivery line of the concrete pump so as to communicate the conveying cylinder and the delivery line. The valve body (200) can be switched between a first state and a secondary state under the driving of a drive mechanism (500).
    Type: Application
    Filed: January 28, 2011
    Publication date: December 20, 2012
    Applicants: SANY HEAVY INDUSTRY CO., LTD., HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD.
    Inventors: Xiuming Yi, Chunguang Zhang, Guifeng Liu