Patents by Inventor Yajun Liu

Yajun 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: 20230417139
    Abstract: The present invention relates to a mechanical tunneling apparatus and process for a tunnel in a quicksand stratum. The mechanical tunneling apparatus comprises isolating apparatuses arranged at an upper end and a lower end of a supporting apparatus; an excavation apparatus arranged at a front end of the supporting apparatus; a spraying apparatus arranged on the isolating apparatuses and the excavation apparatus; a muck discharging apparatus arranged at a lower part of the supporting apparatus; and a propulsion apparatus arranged at a rear end of the supporting apparatus. The mechanical apparatus of the present invention may effectively increase a tunneling speed and safety for the tunnel in the quicksand stratum, ensure the stability of surrounding rocks of the tunnel, and reduce a large volume of collapse of the quicksand stratum due to tunnel construction disturbance.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 28, 2023
    Inventors: Ke WU, Dapeng LIU, Wenbin XU, Yajun LIU, Zhongyu DOU, Zhenhua LIU
  • Publication number: 20230408392
    Abstract: The present invention relates to an experimental apparatus for researching characteristics of subsea tunnel at bottom of seabed under wave, comprising main control system, wave making test system, rock and soil confining pressure test system and water level regulation test system, wherein a bottom of the rock and soil confining pressure test system is connected with the water level regulation test system; a bottom of the wave making test system is connected with the rock and soil confining pressure test system; and all test systems are electrically connected with the main control system. The experimental apparatus, when being small, may simulate the situation of the subsea tunnel under a nonlinear complex wave, may consider the common action of the seabed and the wave, and may regulate water levels and soil pressures, having perfect functions and effectively exploring the effect of various aspects on the subsea tunnel.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Inventors: Ke WU, Wenbin XU, Dapeng LIU, Yajun LIU, Zhenhua LIU, Zhongyu DOU
  • Publication number: 20230407746
    Abstract: The present invention relates to method for filling deformable karst cave, and the steps are: penetrating a grouting pipe into an elastic silicone tube, penetrating the grouting pipe and the elastic silicone tube into a deformable bracket, and lowering into a karst cave; sealing the elastic silicone tube, injecting silicate resin materials into the grouting pipe, and injecting steel fiber reinforced grout to implement a “block stone-like” structure; sealing the elastic silicone tube, separating the “block stone-like” structure from the elastic silicone tube to complete a “block stone-like” structure; lowering the elastic silicone tube and the deformable bracket, sealing the elastic silicone tube, lowering the elastic silicone tube and the deformable bracket tore construct the “block stone-like” structure, and completing the filling. The present invention may effectively stabilize the karst cave, ensure safe tunnel construction and stable surrounding rocks, and improve engineering construction speed.
    Type: Application
    Filed: August 25, 2023
    Publication date: December 21, 2023
    Inventors: Ke WU, Yajun LIU, Zhongyu DOU, Zhenhua LIU, Dapeng LIU, Wenbin XU
  • Publication number: 20230392499
    Abstract: The present invention belongs to the technical field of ocean traffic engineering, and relates to a fabricated ocean tunnel structure with an escape device and an application method thereof. The present invention includes a fabricated ocean tunnel structure and an escape device. the partition plate separates a middle bin in the tunnel, and the escape device is connected into the middle bin; and the escape device includes a rescue capsule, transverse ladders are evenly arranged in the rescue capsule, and a balancing weight block and a rescue equipment area are arranged at the bottom of the rescue capsule. The ocean tunnel structure can be provided with a rescue device during installation, and the safety of personnel escape can be guaranteed; therefore, the safety of the ocean tunnel structure is improved, cost is relatively low, secondary damage to the ocean tunnel structure is not needed.
    Type: Application
    Filed: August 22, 2023
    Publication date: December 7, 2023
    Inventors: Ke WU, Yajun LIU, Zhenhua LIU, Zhongyu DOU, Wenbin XU, Dapeng LIU
  • Patent number: 11292538
    Abstract: A system for automatically correcting bicycle handlebar and warehousing the bicycle includes a bicycle and a warehouse box for storing the bicycle. The bicycle includes a bicycle frame, a handlebar, a stem, a front wheel and a rear wheel; an encoder is mounted on a bicycle frame for recording a rotation angle of a stem and sensing whether the handlebar is corrected. A rear-wheel correcting and fine-adjusting device is provided in the warehousing box or on the bicycle frame. The rear-wheel correcting and fine-adjusting device automatically twists a rear wheel according to a deviation angle record of the encoder on the bicycle frame so that the rear wheel and a front wheel form a plane. The system is capable of automatically correcting the handlebar and warehousing the bicycle, thereby facilitating the automatic storage and greatly reducing the storage space in the warehousing box.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: April 5, 2022
    Inventor: Yajun Liu
  • Publication number: 20210196402
    Abstract: The present disclosure is related to a system. The system may include a medical device, a medical device, a storage device, a processing device, and an interaction device. The medical device may be configured to perform a medical procedure on a subject or a portion thereof. The storage device may be configured to store subject procedure information relating to the medical procedure on the subject. The processing device may be configured to communicate with the medical device, the storage device, and the interaction device. The interaction device may be configured to communicate to the subject at least a portion of the subject procedure information during the medical procedure.
    Type: Application
    Filed: March 2, 2021
    Publication date: July 1, 2021
    Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Hui YIN, Yecheng HAN, Yong E, Wanli TENG, Yajun LIU, Wei TIAN
  • Publication number: 20200290693
    Abstract: A system for automatically correcting bicycle handlebar and warehousing the bicycle includes a bicycle and a warehouse box for storing the bicycle. The bicycle includes a bicycle frame, a handlebar, a stem, a front wheel and a rear wheel; an encoder is mounted on a bicycle frame for recording a rotation angle of a stem and sensing whether the handlebar is corrected. A rear-wheel correcting and fine-adjusting device is provided in the warehousing box or on the bicycle frame. The rear-wheel correcting and fine-adjusting device automatically twists a rear wheel according to a deviation angle record of the encoder on the bicycle frame so that the rear wheel and a front wheel form a plane. The system is capable of automatically correcting the handlebar and warehousing the bicycle, thereby facilitating the automatic storage and greatly reducing the storage space in the warehousing box.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Inventor: Yajun LIU
  • Patent number: 10501309
    Abstract: A fuel vapor recovery control system includes a controller, a recovery electrical motor, a fuel vapor switching valve, a fuel vapor recovery pump, a fuel tank, a fueling pump, a fuel gun, and a temperature sensor connected in sequence. A fueling flowmeter is arranged on a fueling pipeline, in signal connection with the controller, the recovery electrical motor and the fuel vapor recovery pump in sequence. The temperature sensor is in signal connection with the controller for controling the recovery electrical motor and the fuel vapor recovery pump by temperature signals. The fuel vapor recovery control system includes a fuel vapor flowmeter for measuring the fuel vapor recovery amount, in signal connection with the controller for controling the recovery electrical motor and the fuel vapor recovery pump by fuel vapor recovery amount signals. The fuel vapor recovery ratio is between 1-1.4. A method of adopting the system is provided herein.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: December 10, 2019
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Yajun Liu, Maoqing Li, Yeqing Chen
  • Publication number: 20190142359
    Abstract: The present disclosure relates to a surgical positioning system and a positioning method. The surgical positioning system comprises a surgical robot, a host computer, a spatial measurement device, a robot tracer, a three-dimensional imaging device and a calibrator for three-dimensional image. The host computer is configured to control a motion of the surgical robot. The calibrator and the robot tracer are detachably connected to a terminal end of the surgical robot. The spatial measurement device is configured to measure spatial coordinates of the robot tracer and transmit position data to the host computer. The three-dimensional imaging device is configured to scan the calibrator and a surgical site of the patient and transmit an image of the markers and an image of the patient to the host computer. The host computer is configured to identify and match the markers in the image and the markers on the calibrator.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 16, 2019
    Applicant: TINAVI MEDICAL TECHNOLOGIES CO., LTD.
    Inventors: Songgen ZHANG, Wei TIAN, Yajun LIU, Jin XU, Weijun ZHANG, Binbin WANG
  • Publication number: 20190055626
    Abstract: The present invention discloses a liquid metal thermal interface material having an anti-melt characteristic and a preparation method thereof. The liquid metal thermal interface material is characterized by comprising, in percentage by weight, 20-40 wt % of indium, 0-6 wt % of bismuth, 0-2 wt % of antimony, 0-3 wt % of zinc, 0-0.6 wt % silver, 0-0.3 wt % of nickel, 0-0.8 wt % of cerium, 0-0.6 wt % of europium and the balance of tin. The liquid metal thermal interface material has excellent thermal conductivity and chemical stability in an operating environment of an insulated gate bipolar transistor (IGBT), and thus is very suitable for IGBT devices in large-scale industrial production and practical applications.
    Type: Application
    Filed: April 24, 2017
    Publication date: February 21, 2019
    Applicant: Ningbo Syrnma Metal Materials Co. Ltd.
    Inventors: Yajun LIU, Hequan CAO, Shuai CAO, Qiang GUO, Zhixin WU
  • Patent number: 10165562
    Abstract: A blind detection method and system for a PDCCH. The method comprises: acquiring PDCCH data; grouping the PDCCH data according to a location identifier of a resource element, and obtaining soft bit data according to each set of PDCCH data after grouping; acquiring control channel soft bit data from the soft bit data; determining DCI data according to the control channel element soft bit data; and acquiring a random access radio network temporary identifier according to the DCI data, to complete blind detection of a PDCCH. The technical solutions in the present application are applicable to a case in which an RNTI of a user is not determined, can ensure accuracy of blind detection of a PDCCH, and greatly reduce a calculation amount and a calculation time.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 25, 2018
    Assignee: Datang Linktester Technology Co., Ltd.
    Inventors: Haixia Wang, Yajun Liu, Chunbai Tan
  • Publication number: 20180035411
    Abstract: A blind detection method and system for a PDCCH. The method comprises: acquiring PDCCH data; grouping the PDCCH data according to a location identifier of a resource element, and obtaining soft bit data according to each set of PDCCH data after grouping; acquiring control channel soft bit data from the soft bit data; determining DCI data according to the control channel element soft bit data; and acquiring a random access radio network temporary identifier according to the DCI data, to complete blind detection of a PDCCH. The technical solutions in the present application are applicable to a case in which an RNTI of a user is not determined, can ensure accuracy of blind detection of a PDCCH, and greatly reduce a calculation amount and a calculation time.
    Type: Application
    Filed: January 28, 2016
    Publication date: February 1, 2018
    Applicant: DATANG LINKTESTER TECHNOLOGY CO.,LTD
    Inventors: Haixia WANG, Yajun LIU, Chunbai TAN
  • Publication number: 20170349427
    Abstract: A fuel vapor recovery control system includes a controller, a recovery electrical motor, a fuel vapor switching valve, a fuel vapor recovery pump, a fuel tank, a fueling pump, a fuel gun, and a temperature sensor connected in sequence. A fueling flowmeter is arranged on a fueling pipeline, in signal connection with the controller, the recovery electrical motor and the fuel vapor recovery pump in sequence. The temperature sensor is in signal connection with the controller for controling the recovery electrical motor and the fuel vapor recovery pump by temperature signals. The fuel vapor recovery control system includes a fuel vapor flowmeter for measuring the fuel vapor recovery amount, in signal connection with the controller for controling the recovery electrical motor and the fuel vapor recovery pump by fuel vapor recovery amount signals. The fuel vapor recovery ratio is between 1-1.4. A method of adopting the system is provided herein.
    Type: Application
    Filed: June 30, 2015
    Publication date: December 7, 2017
    Inventors: Yajun LIU, Maoqing LI, Yeqing CHEN
  • Patent number: 6975592
    Abstract: A system and method for data flow classification based on a configurable rule-engine, is presented herein. In accordance with an embodiment of the invention, the system includes a data flow managing mechanism configured to identify, track, and manage the data flows and a rule set, which includes a plurality of rules for comparing information contained within data flow with pre-specified values. The system also includes a configurable classification rule engine for classifying the data flows into one of a plurality of traffic classes based on results of the comparisons. The configurable classification rule engine is configured via a configuration file that specifies and allows for the modification and reconfiguration of the pre-specified values and information regarding the data flows, the rule set, and the traffic classes.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: December 13, 2005
    Assignee: Nortel Networks Limited
    Inventors: Nabil N. Seddigh, Biswajit B. Nandy, Don W. Bennett, Yajun Liu, Dabin Wang, Carl F. Cao
  • Patent number: 6917588
    Abstract: Currently there are two techniques used to classify data packet flows, those techniques being static and dynamic. A proper combination of these two techniques can allow for the advantages of both techniques to be gained while reducing their respective disadvantages. With this combined flow classification method a flow is classified initially with the use of a static classification method while, at the same time, a dynamic classification method is initiated. If at any point during the dynamic classification method, the classifications derived from the static and dynamic algorithms converge, the flow's classification is henceforth assigned by the dynamic classification method. If a predetermined number of packets or length of time that would be required for the dynamic and static classification algorithms to converge is exceeded, the flow's classification, once again, is henceforth assigned by the dynamic classification method.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: July 12, 2005
    Assignee: Nortel Networks Limited
    Inventors: Carl F. Cao, Don W. Bennett, Yajun Liu, Nabil N. Seddigh, Biswajit B. Nandy, Dabin Wang
  • Patent number: 6785291
    Abstract: A technique for dynamically assigning a packet flow to transmission channels can result in more efficient use of the channels when compared to static assignment techniques. Using this technique for dynamic assignment, an initial channel assignment is made based upon a channel specification corresponding to a flow classification indication within the first packet of the flow. Subsequently, the flow classification indications of further packets within the flow are monitored for changes. If it is detected that a flow classification indication has changed when compared to the previous flow classification indication, it is determined whether the previous channel assignment satisfies a channel specification corresponding to the new flow classification indication. If it is determined that the previous channel does not satisfy this new channel specification, a modified channel assignment is generated for the subsequent packets of the flow.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 31, 2004
    Assignee: Nortel Networks Limited
    Inventors: Carl F. Cao, Yajun Liu, Maiyuran Wijayanathan
  • Patent number: 6757738
    Abstract: Systems and methods applicable in the context of the TCP/IP suite of protocols explicitly are provided which allow for separate and preferential treatment of L4-L7 control packets compared to the treatment of L7 data packets. This provides a performance gain at the cost of providing such preferential treatment for high error and long delay channels such as wireless links. Advantageously, channel utilization may be increased, for example by 5-50% depending on link conditions, on high error and long delay transmission links. More generally the invention distinguishes between control packets such as transport layer (for example, TCP, OSI Layer 4 or L4) and application layer (for example, OSI Layer 7) control packets and data packets, and transmits the control packets with higher reliability and lower delays. The benefit may be significant for IP applications where data objects transferred are small and are bursty, e.g., Web browsing and e-mail access.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: June 29, 2004
    Assignee: Nortel Networks Limited
    Inventors: Carl F. Cao, Richard A. Houle, Dabin Wang, Fozia A. Zaidi, Don W. Bennett, Yajun Liu, Biswajit B. Nandy, Nabil N. Seddigh, Nausheen Naz, Satheesa Nadaragh
  • Patent number: 6741556
    Abstract: A method and apparatus for dynamically classifying TCP-based traffic, is presented herein. In accordance with an embodiment of the invention, the method includes defining a first class to classify TCP data streams requiring interactive data transactions, a second class to classify TCP data streams requiring small data transactions, and a third class to classify TCP data streams requiring large data transactions. A rule set containing rules to define transitions between the defined classes, is established and an incoming TCP data stream as pertaining to the first class and detects attributes of the TCP data stream. The TCP data stream may include a single data transaction or may include a plurality of data transactions. Based on the detected attributes and the rules, the method dynamically classifies the TCP data stream into one of the defined classes.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: May 25, 2004
    Assignee: Nortel Networks Limited
    Inventors: Nabil N. Seddigh, Biswajit B. Nandy, Yajun Liu, Carl F. Cao, Don W. Bennett, Dabin Wang