Patents by Inventor Wei Du

Wei Du 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: 20220142225
    Abstract: An intelligent control system and method of thin plate dryer for cut tobacco are provided. The system includes a factor searching and screening unit, a control unit, an early warning unit. The control unit adopts a dual-model control method and establishes a process parameter control model and an energy balance model, the control unit calculates the moisture discharge opening value in real time according to the dual-model; the early warning unit is configured to connected with the control unit, and send out an alarm information based on early warning signal. The present disclosure is designed to transform the traditional control into intelligent precision control, improve product quality, reduce product differences between batches and build an intelligent early warning function.
    Type: Application
    Filed: September 7, 2021
    Publication date: May 12, 2022
    Inventors: Zijuan Li, Bo Liu, Yang Gao, Wangchang Miao, Ting Fang, Weidong Yao, Dongsheng Du, Liyuan Zhao, Jiaojiao Chen, Xiaohui Jia, Zheng Zhou, Yanshu Ma, Wenhui Chang, Wei Wei, Minglei Ma, Zixian Feng
  • Patent number: 11292057
    Abstract: The present invention discloses a method for manufacturing a thin-walled metal component by three-dimensional (3D) printing and hot gas bulging. The present invention uses 3D printing to obtain a complex thin-walled preform, which reduces a deformation during subsequent hot gas bulging. The present invention avoids local bulging thinning and cracking, undercuts at the parting during die closing, and wrinkles due to the uneven distribution of cross-sectional materials, etc. The present invention obtains a high accuracy in the form and dimension through hot gas bulging. After a desired shape is obtained by hot gas bulging, a die is closed to keep the component under high temperature and high pressure for a period of time, so that a grain and a phase of the material are transformed to form a desired microstructure.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: April 5, 2022
    Assignee: Dalian University of Technology
    Inventors: Zhubin He, Yi Xu, Jiangkai Liang, Wei Du, Peng Lin
  • Publication number: 20220102942
    Abstract: A laser diode including a double heterostructure comprising a top layer, a buffer layer formed on a substrate, and an intrinsic active layer formed between the top layer and the buffer layer. The top layer and the buffer layer have opposite types of conductivity. The active layer has a bandgap smaller than that of the buffer layer or the top layer. The double heterostructure includes Ge, SiGe, GeSn, and/or SiGeSn materials.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 31, 2022
    Inventors: Shui-Qing Yu, Yiyin Zhou, Wei Du
  • Patent number: 11278235
    Abstract: A prosthetic device includes a frame defining an output axis, a cantilever beam spring attached to the frame, a moment arm attached to the spring, and a rigid output arm coupled to the frame and rotatable about the output axis. A connector assembly is configured to apply a moment to the cantilever beam spring via the moment arm while applying a torque about the output axis via the output arm. An ankle-foot device includes foot and ankle members connected for two-degree of freedom movement relative to one another, allowing for rotation about an ankle axis and rotation about a subtalar axis. Two linear actuators, each coupled to corresponding series elastic element, link the foot and ankle members. Driving the actuators in the same direction causes rotation about the ankle axis and driving the actuators in opposing directions causes rotation about the subtalar axis. A processor receives sensory information from a sensor and drives the actuators to control an equilibrium position of the series elastic elements.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: March 22, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Hugh M. Herr, Matthew Eli Carney, Emily Ann Rogers, Lucy Wei Du
  • Publication number: 20220084139
    Abstract: Computing apparatus and methods to increase operational flexibility in an energy distribution system include using a transactive mechanism to adjust voltage supplied to a power grid by one or more distributed energy resources (DERs). In some examples of the disclosed technology, the transactive mechanism is configured to cause the one or more DERs to adjust a corresponding supply of voltage to the power grid in order to reach a targeted voltage difference across terminals of a switching device of the power grid, thereby enabling the switching device to be switched to increase reliability of the power grid.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Applicant: Battelle Memorial Institute
    Inventors: Bishnu P. Bhattarai, Jing Xie, Kevin P. Schneider, Wei Du, Laurentiu D. Marinovici
  • Publication number: 20220072886
    Abstract: The present disclosure provides a ribbon cassette, label printer, and installation method thereof. The ribbon cassette includes a cassette housing. A print head clamping groove, a side wall, and a position hole located inside the side wall are disposed on the cassette housing. A ribbon cutting part is formed at a connection between the side wall and the print head clamping groove. A first clamping accommodation part, a second clamping accommodation part, and a third clamping accommodation part are disposed on a surface of the cassette housing. The first clamping accommodation part, the second clamping accommodation part, and the third clamping accommodation part are respectively matched with a first position column, a second position column, and a third position column of a label printer.
    Type: Application
    Filed: November 2, 2020
    Publication date: March 10, 2022
    Inventors: Jinpeng Guo, Wei Du
  • Publication number: 20220072480
    Abstract: A superhydrophobic polypropylene porous film, including a polypropylene porous film substrate, titanium dioxide layers and a surface modifier layer, is disclosed. The titanium dioxide layers are deposited on the surface of the polypropylene porous film substrate by atomic deposition technology; a surface modifier is coated on the titanium dioxide layers; hydrophobic bonds are formed between the titanium dioxide layers and the surface modifier layer; the superhydrophobic polypropylene porous film has a water contact angle greater than 150 degrees, a rolling angle less than 10 degrees, an aperture of 0.1-0.4 ?m, a porosity of 50%-80%, a tensile strength of 30-50 MPa, and an elongation at break of 10%-30%.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Na TANG, Yangyang SONG, Lei ZHANG, Xingxing SHI, Songbo WANG, Penggao CHENG, Wei DU, Jianping ZHANG
  • Patent number: 11208351
    Abstract: Electromagnetically-induced cement concrete crack self-healing diisocyanate microcapsules include raw materials, in parts by weight, comprising 15-55 parts of petroleum resin, 5-10 parts of paraffin, 5-10 parts of polyethylene wax, 3-10 parts of magnetic iron powder and 20-67 parts of diisocyanate. The diisocyanate microcapsules use the diisocyanate as a core material, and the petroleum resin/paraffin/polyethylene wax/magnetic iron powder mixture as the shell of the capsule. When micro cracks occur in the concrete, the crack propagation can break partial of the microcapsule inside, the diisocyanate inside the microcapsules flows out and diffuses into the crack and is subjected to a solidifying reaction with water in the concrete, so that the crack is repaired in time; and for the microcapsules that are not broken by cracks, external electromagnetic field can be applied to melt the shell to release the diisocyanate inside, thereby diffusing into cracks and solidify with water to repair them.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: December 28, 2021
    Assignee: WUHAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jianying Yu, Wei Du, Shaopeng Wu, Yi Gu, Ying Li, Jun Xie, Xiaobin Han
  • Patent number: 11207732
    Abstract: An integrated method for manufacturing a high-temperature resistant thin-walled component by preforming by laying a metal foil strip. The integrated manufacturing method includes: designing a preform, preparing a support die, determining a thickness of a foil strip, determining a width of the foil strip, developing a laying process, laying an A foil strip and a B foil strip, obtaining an AB laminated preform, bulging the preform, performing a reactive synthesis and a densification process of a bulged component, and performing a subsequent treatment of the thin-walled component. Various embodiments obtain an integral thin-walled preform with a complex structure, a uniform wall thickness and a shape close to the final part by continuously laying a metal foil strip with an appropriate width.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: December 28, 2021
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Zhubin He, Jiangkai Liang, Yi Xu, Wei Du, Yanli Lin, Kailun Zheng, Peng Lin, Gang Liu, Shijian Yuan
  • Publication number: 20210372703
    Abstract: A method for determining a fugitive emission factor (EF) and a leakage rate of a combustion source. For a combustion source capable of performing stack emission and fugitive emission, an organized EF, a fugitive EF, and a leakage rate of fugitive emission are respectively obtained through calculation based on material balance. The method solves the problem that it is impossible to collect a total amount of smoke and to quantify its volume in a field test and the problem that a conventional carbon mass balance (CMB) method cannot distinguish organized leakage from fugitive leakage. The method can be used not only for determining gas leaked from residential indoor stoves using coal, biomass, etc., but also for determining fugitive emissions from other sources, such as the amount of gas leaked to the surrounding environment through the body of a brick kiln in a brick and tile factory.
    Type: Application
    Filed: September 30, 2020
    Publication date: December 2, 2021
    Applicant: Peking University
    Inventors: Guofeng Shen, Shu Tao, Wei Du, Yuanchen Chen
  • Publication number: 20210371292
    Abstract: A large-particle spherical salt with a particle size of 400-950 ?m and a sphericity of 0.5-1.0 is disclosed, which overcomes the existing difficulty in this field for larger particle size as well as higher sphericity. A preparation method of the large-particle spherical salt is also disclosed, wherein in one preparation process, 2% of gum arabic (based on the mass percentage of solute sodium chloride in a sodium chloride saturated solution) is added, and under conditions of an evaporating temperature of 60° C. a stirring rate of 350 rpm, and an evaporating time of 8 hours, a large-particle spherical salt with a particle size of 921.593 ?m and an average sphericity of 0.904 is successfully prepared. The large-particle spherical salt prepared by the method has a uniform particle size distribution and good appearance, can be combined with other substances, adding some extra value to the salt. Meanwhile, the large-particle spherical salt prepared by the method has a high safety grade (e.g.
    Type: Application
    Filed: August 15, 2021
    Publication date: December 2, 2021
    Inventors: Na TANG, Min LU, Wei DU, Penggao CHENG, Jun XIANG, Lei ZHANG, Songbo WANG, Jianping ZHANG
  • Publication number: 20210311918
    Abstract: Disclosed embodiments provide a computer-implemented technique for creating a log chain from multiple software component logs. The log chain can include log information from multiple software components that interact with each other. In embodiments, a locality-sensitive hashing technique is used to create a signature of a log chain. Machine-learning systems are trained with log chains generated from test execution, and/or log chains from incidents with deployed software. In embodiments, logs are pre-processed by tokenizing and trimming. Logs from various components that interact with each other may be combined into a temporally sequential log chain. The signature of the log chain may be used to identify additional information about the error from a machine-learning process that was trained on previously generated log chains. In this way, the time required to identify a problem can be significantly reduced, resulting in increased reliability and availability of complex computer systems.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 7, 2021
    Inventors: Quan QC Cheng, Xiang Qiu, Zhi Wei Du, Peng Hui Jiang
  • Publication number: 20210303181
    Abstract: Embodiments relate to the field of storage technologies. The method is applied to a flash device whose first physical storage space stores a data block at a first security level and a data block at a second security level and whose second physical storage space stores a data block at a second security level. The method includes: receiving a data write request used to request to write target data, and obtaining a security level of the target data; and writing the target data into the first physical storage space if the security level of the target data is the first security level; or writing the target data into the second physical storage space or writing the target data into the second physical storage space and the first physical storage space if the security level of the target data is the second security level.
    Type: Application
    Filed: July 26, 2018
    Publication date: September 30, 2021
    Inventors: Ning WANG, Xiyu ZHOU, Wei DU, Xiang GAO
  • Publication number: 20210283018
    Abstract: The present disclosure provides a pill organizer. The pill organizer comprises a box body. The box body comprises at least one pill storage cavity and at least one cover. The pill storage cavity defining an upper end opening. The cover is matched with the upper end opening and is disposed on the upper end opening of the pill storage cavity. One end of the cover is rotatably connected with the box body. Another end of the cover is detachably buckled with the box body. An elastic piece is disposed om an inner surface of the one end of the cover rotatably connected with the box body. One end of the elastic piece is fixed on the box body. Another end of the elastic piece of the covers is buckled with one side of the pill storage cavity of the box body.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 16, 2021
    Inventors: JINPENG GUO, WEI DU
  • Publication number: 20210283014
    Abstract: A pill box includes a box body, The box body includes an accommodating chamber defining an opening and receiving pills. A box closing the accommodating chamber is arranged on the accommodating chamber, A connecting end of the box cover is hinged to a rear end of the box body. An elastic piece and a limiting groove are disposed on the rear end of the box body. A clamping seat is arranged on the connecting end of the box cover. A bending portion is arranged on one end of the elastic piece. A fixing portion is arranged on another end of the elastic piece. The bending portion passes through the clamping sear and is exposed. When the box cover is buckled with the box body, the bending portion is deformed by being squeezed and tightly engages with the box cover, and the fixing portion extends downward into the limiting groove.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 16, 2021
    Inventors: JINPENG GUO, WEI DU
  • Publication number: 20210224225
    Abstract: A data query method and apparatus are disclosed. The method includes: determining a target directory block including m directory entries and m file names, where the m directory entries one-to-one correspond to the m file names, and the m directory entries and the m file names are sequentially arranged according to a preset rule; determining a current first set and a current second set based on a binary search algorithm and the target directory block; determining a first common prefix between a to-be-accessed file name and a file name in the current second set; comparing the to-be-accessed file name with a third file name character by character from a first character after the first common prefix; and if the to-be-accessed file name is the same as the third file name, obtaining data of a to-be-accessed file based on a directory entry corresponding to the third file name.
    Type: Application
    Filed: February 5, 2018
    Publication date: July 22, 2021
    Inventors: Xiang GAO, Wei DU, CHUN YEN CHEN, Ning WANG
  • Publication number: 20210213528
    Abstract: The present invention discloses an integrated method for manufacturing a high-temperature resistant thin-walled component by preforming by laying a metal foil strip. The integrated manufacturing method includes: designing a preform, preparing a support die, determining a thickness of a foil strip, determining a width of the foil strip, developing a laying process, laying an A foil strip and a B foil strip, obtaining an AB laminated preform, bulging the preform, performing a reactive synthesis and a densification process of a bulged component, and performing a subsequent treatment of the thin-walled component. The present invention obtains an integral thin-walled preform with a complex structure, a uniform wall thickness and a shape close to the final part by continuously laying a metal foil strip with an appropriate width.
    Type: Application
    Filed: July 24, 2020
    Publication date: July 15, 2021
    Inventors: Zhubin He, Jiangkai Liang, Yi Xu, Wei Du, Yanli Lin, Kailun Zheng, Peng Lin, Gang Liu, Shijian Yuan
  • Publication number: 20210210957
    Abstract: Methods include, in response to a line frequency variation of a power grid, adjusting a voltage setpoint of a voltage regulator coupled to the power grid at a grid edge to maintain a voltage at the grid edge, wherein the adjusting the regulated voltage setpoint is configured to reduce the line frequency variation to stabilize the line frequency of the power grid. Apparatus include a voltage regulator configured to couple to a power grid at a grid edge and to maintain a voltage at the grid edge, wherein the voltage regulator is further configured to adjust a voltage setpoint of a voltage regulator in response to a line frequency variation of the power grid to reduce the line frequency variation and stabilize the line frequency of the power grid.
    Type: Application
    Filed: November 20, 2020
    Publication date: July 8, 2021
    Applicant: Battelle Memorial Institute
    Inventors: Wei Du, Kevin P. Schneider, Francis K. Tuffner, Jing Xie, Thanh T. Vu
  • Publication number: 20210197261
    Abstract: The present invention discloses a method for manufacturing a thin-walled metal component by three-dimensional (3D) printing and hot gas bulging. The present invention uses 3D printing to obtain a complex thin-walled preform, which reduces a deformation during subsequent hot gas bulging. The present invention avoids local bulging thinning and cracking, undercuts at the parting during die closing, and wrinkles due to the uneven distribution of cross-sectional materials, etc. The present invention obtains a high accuracy in the form and dimension through hot gas bulging. After a desired shape is obtained by hot gas bulging, a die is closed to keep the component under high temperature and high pressure for a period of time, so that a grain and a phase of the material are transformed to form a desired microstructure.
    Type: Application
    Filed: April 30, 2020
    Publication date: July 1, 2021
    Inventors: Zhubin He, Yi XU, Jiangkai Liang, Wei Du, Peng Lin
  • Patent number: D943268
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: February 15, 2022
    Assignee: ZHUHAI TOP LABEL CO., LTD
    Inventors: Jinpeng Guo, Wei Du