Patents by Inventor Dengwei LI

Dengwei LI 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).

  • PASSWORD PROTECTION METHOD AND APPARATUS, AND MEDIUM
    Publication number: 20240265093
    Abstract: The present application discloses a password protection method.
    Type: Application
    Filed: April 26, 2022
    Publication date: August 8, 2024
    Inventors: Dengwei LI, Rengang LI
  • Dynamic inwardly eccentrically-placed directional drill bit type rotation guidance apparatus
    Patent number: 10233694
    Abstract: A rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector has a ball-socketed ball-joint rod, and a drill bit is connected to the ball-socketed ball-joint rod. Several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector, wherein a piston matches each piston hole and a piston rod connected to the piston is movably connected to the ball-socketed ball-joint rod. An eccentrically-placed valve core is connected to a controller provided in an upper connector, wherein a working face of the eccentrically-placed valve core is opposite to the piston holes and rotation of the eccentrically-placed valve core makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: March 19, 2019
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Wei Li, Hongxiang Lei, Qingyou Liu, Shihong Xiao, Xu Si, Tieshan Zhang, Qing Tu, Xiao Tan, Fanyao Jin, Xingming Wang, Yuan Zhong, Hang Li, Jianchuan Wu, Dengwei Li
  • DYNAMIC INWARDLY ECCENTRICALLY-PLACED DIRECTIONAL DRILL BIT TYPE ROTATION GUIDANCE APPARATUS
    Publication number: 20180100352
    Abstract: Disclosed is a rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector (3) has a ball-socketed ball-joint rod (12), and a drill bit (1) is connected to the ball-socketed ball-joint rod (12); several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector (3), a piston matches each piston hole, and a piston rod (11) connected to the piston is movably connected to the ball-socketed ball-joint rod (12); and a eccentrically-placed valve core (17) is connected to a controller provided in an upper connector (4), a working face of the eccentrically-placed valve core (17) is opposite to the piston holes, and rotation of the eccentrically-placed valve core (17) makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod (12).
    Type: Application
    Filed: June 23, 2015
    Publication date: April 12, 2018
    Applicant: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Wei LI, Hongxiang LEI, Qingyou LIU, Shihong XIAO, Xu SI, Tieshan ZHANG, Qing TU, Xiao TAN, Fanyao JIN, Xingming WANG, Yuan ZHONG, Hang LI, Jianchuan WU, Dengwei LI