Patents by Inventor Lifeng Zheng
Lifeng Zheng 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).
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Publication number: 20250052334Abstract: Provided are a framework, a framework assembly, a coil assembly and an electronic expansion valve. The framework includes a framework body, a connecting part and a pin socket, wherein a first end of the connecting part is arranged on a peripheral surface of the framework body, the pin socket is arranged at a second end of the connecting part away from the framework body, the framework further includes at least one support part, and the at least one support part is arranged on the connecting part, which can solve the problem of the poor waterproof effect of a coil assembly.Type: ApplicationFiled: December 15, 2022Publication date: February 13, 2025Inventors: Jiyou ZHANG, Yonghao CHEN, Lifeng ZHENG
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Patent number: 12212486Abstract: Embodiments of multi-host link aggregation are described for active-active cluster implementations. In one or more embodiments, a multi-host LAG bond in the cluster is created with a bond MAC address designated for the bond. Afterwards, a virtual IP address may be created for all hosts within the multi-host LAG bond. Compared with existing active-active cluster implementation, the presented multi-host link aggregation embodiments do not require extra entities, e.g., load balancer or DNS, which could be a failure point or performance bottleneck, thus makes the active-active cluster implementations more efficient and robust. With the Multi-Host LACP bond and virtual IP on all hosts, the cluster may have increased bandwidth to the cluster service and utilize computing capacity in a network switch for improved workload distribution.Type: GrantFiled: April 27, 2023Date of Patent: January 28, 2025Assignee: DELL PRODUCTS L.P.Inventors: Jianfei Yang, Mingyi Luo, Weilan Pu, Srinivasa Raju Chamarthy, Lifeng Zheng
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Patent number: 12170583Abstract: An apparatus comprises at least one processing device configured to receive, by at least one network switch, a communication comprising a virtual logical device tag. The processing device is also configured, responsive to determining that the virtual logical device tag is a host-specific virtual logical device tag associated with a given host-specific virtual logical device of a given host device that is part of a multi-host link aggregation bond, to direct the communication to a given link for the given host device. The processing device is further configured, responsive to determining that the virtual logical device tag is a service-generic virtual logical device tag for a service provided by host devices which are part of the multi-host link aggregation bond) collectively, to select one of the host devices in accordance with a distribution algorithm and to direct the communication to a selected link for the selected host device.Type: GrantFiled: September 28, 2023Date of Patent: December 17, 2024Assignee: Dell Products L.P.Inventors: Jianfei Yang, Weilan Pu, Mingyi Luo, Lifeng Zheng, Si Zhang, Srinivasa Raju Chamarthy
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Publication number: 20240364622Abstract: Embodiments of multi-host link aggregation are described for active-active cluster implementations. In one or more embodiments, a multi-host LAG bond in the cluster is created with a bond MAC address designated for the bond. Afterwards, a virtual IP address may be created for all hosts within the multi-host LAG bond. Compared with existing active-active cluster implementation, the presented multi-host link aggregation embodiments do not require extra entities, e.g., load balancer or DNS, which could be a failure point or performance bottleneck, thus makes the active-active cluster implementations more efficient and robust. With the Multi-Host LACP bond and virtual IP on all hosts, the cluster may have increased bandwidth to the cluster service and utilize computing capacity in a network switch for improved workload distribution.Type: ApplicationFiled: April 27, 2023Publication date: October 31, 2024Applicant: DELL PRODUCTS L.P.Inventors: Jianfei YANG, Mingyi LUO, Weilan PU, Srinivasa Raju CHAMARTHY, Lifeng ZHENG
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Publication number: 20240309962Abstract: An expansion valve coil structure, a method for preparing an expansion valve coil structure and an expansion valve are provided. The expansion valve coil structure includes a stator housing and an electromagnetic pole plate, the stator housing and the electromagnetic pole plate are disposed opposite to each other. The stator housing and the electromagnetic pole plate are both provided with a plurality of processed exposed surfaces. A surface of the stator housing and a surface of the electromagnetic pole plate are covered with a first antirust layer. Each of the plurality of processed exposed surfaces is covered with a second antirust layer The expansion valve includes the expansion valve coil structure.Type: ApplicationFiled: May 29, 2024Publication date: September 19, 2024Inventors: Jiyou ZHANG, Yonghao CHEN, Lifeng ZHENG
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Publication number: 20230334336Abstract: An apparatus comprises a processing device configured to determine one or more testing goals for testing to be performed on one or more of a plurality of information technology assets of an information technology infrastructure and to select two or more of a plurality of testing plans based at least in part on scores assigned to respective ones of the plurality of testing plans, the assigned scores characterizing whether respective ones of the plurality of testing plans meet the determined one or more testing goals. The processing device is further configured to generate, utilizing one or more machine learning-based genetic algorithms that take as input the selected two or more testing plans, one or more additional testing plans, and to execute the one or more additional testing plans on the one or more of the plurality of information technology assets of the information technology infrastructure.Type: ApplicationFiled: May 3, 2022Publication date: October 19, 2023Inventors: Jianfei Yang, Ruiyang Zhang, Mingyi Luo, Weilan Pu, Lifeng Zheng, Xiaofeng Ge
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Patent number: 11585218Abstract: A drilling device for surveying front rock-mass intactness of a tunnel face for a tunnel constructed by a TBM and a method using the same are provided. The drilling device includes a drilling assembly, a drill-attitude control assembly, a data monitoring assembly and a TBM-platform fixing seat. The drilling assembly is connected to a TBM hydraulic system to obtain power, to drill the rock mass by an alloy bit through rotation and translation thereof. The drill-attitude control assembly controls an angle, a direction and a position of a drill rod and maintains drilling accuracy and stability. The data monitoring assembly acquires and stores a drilling dynamic-response signal by a high-accuracy sensor and a data recorder, to analyze an intactness characteristic of the rock mass. The TBM-platform fixing seat mounts the drilling device on the TBM.Type: GrantFiled: August 6, 2021Date of Patent: February 21, 2023Assignee: CHINA INSTITUTE OF WATER RESOURCES AND HYDROPOWER RESEARCHInventors: Yujie Wang, Ruilang Cao, Yufei Zhao, Lipeng Liu, Qiang Shen, Jin Pi, Xingsong Sun, Shangxin Feng, Lifeng Zheng
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Publication number: 20220181057Abstract: Disclosed is an expansion valve coil assembly, comprising a coil unit and a housing, wherein the coil unit is provided with a mounting platform, the mounting platform is provided, in a partially protruding manner, with a connecting part, and the housing is sheathed over the connecting part and is fixedly connected to the mounting platform; and a side wall of the connecting part has a concave-convex structure, and the space between an inner side of the housing and the connecting part is filled with a sealing material.Type: ApplicationFiled: April 14, 2020Publication date: June 9, 2022Inventors: Lifeng ZHENG, Bin WEI, Qingjun ZENG, Jiyou ZHANG
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Publication number: 20220082020Abstract: A drilling device for surveying front rock-mass intactness of a tunnel face for a tunnel constructed by a TBM and a method using the same are provided. The drilling device includes a drilling assembly, a drill-attitude control assembly, a data monitoring assembly and a TBM-platform fixing seat. The drilling assembly is connected to a TBM hydraulic system to obtain power, to drill the rock mass by an alloy bit through rotation and translation thereof. The drill-attitude control assembly controls an angle, a direction and a position of a drill rod and maintains drilling accuracy and stability. The data monitoring assembly acquires and stores a drilling dynamic-response signal by a high-accuracy sensor and a data recorder, to analyze an intactness characteristic of the rock mass. The TBM-platform fixing seat mounts the drilling device on the TBM.Type: ApplicationFiled: August 6, 2021Publication date: March 17, 2022Inventors: Yujie WANG, Ruilang CAO, Yufei ZHAO, Lipeng LIU, Qiang SHEN, Jin PI, Xingsong SUN, Shangxin FENG, Lifeng ZHENG
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Patent number: 10838825Abstract: Techniques for implementing snapshot sets for consistency groups of storage volumes in data storage systems. For each snapshot in a snapshot set of a consistency group, metadata is expanded to include a snapshot set identifier, and a consistency group identifier. The data structure of the consistency group is enhanced to include a snapshot set list, which includes the snapshot set identifier(s) of the consistency group, and a pointer to a storage volume list that contains names of storage volumes with snapshots in the snapshot set(s). By expanding the metadata of each snapshot in a snapshot set, and enhancing the data structure of each consistency group with snapshot set(s), relationships between snapshots, snapshot sets, consistency groups, and storage volumes can be readily maintained, allowing storage volumes to be added to and/or removed from consistency groups without having to delete snapshots of the storage volumes and/or snapshot sets of the consistency groups.Type: GrantFiled: May 29, 2018Date of Patent: November 17, 2020Assignee: EMC IP Holding Company LLCInventors: Jia Huang, Bernie Hu, Jessica Jing Ye, Olivia Juan Huang, Jennifer Lifeng Zheng
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Publication number: 20190332499Abstract: Techniques for implementing snapshot sets for consistency groups of storage volumes in data storage systems. For each snapshot in a snapshot set of a consistency group, metadata is expanded to include a snapshot set identifier, and a consistency group identifier. The data structure of the consistency group is enhanced to include a snapshot set list, which includes the snapshot set identifier(s) of the consistency group, and a pointer to a storage volume list that contains names of storage volumes with snapshots in the snapshot set(s). By expanding the metadata of each snapshot in a snapshot set, and enhancing the data structure of each consistency group with snapshot set(s), relationships between snapshots, snapshot sets, consistency groups, and storage volumes can be readily maintained, allowing storage volumes to be added to and/or removed from consistency groups without having to delete snapshots of the storage volumes and/or snapshot sets of the consistency groups.Type: ApplicationFiled: May 29, 2018Publication date: October 31, 2019Inventors: Jia Huang, Bernie Hu, Jessica Jing Ye, Olivia Juan Huang, Jennifer Lifeng Zheng
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Patent number: 9102527Abstract: Systems and methods are provided for the manipulation of a polarizable object with a pair of elongated nanoelectrodes using dielectrophoresis. The nanoelectrodes can be carbon nanotubes and are coupled with one or more time-varying voltage sources to create an electric field gradient in a gap between the nanotubes. The gradient induces the movement of a polarizable object in proximity with the field. The nanotube pair can be used to trap a single polarizable object in the gap. A method of fabricating a nanoelectrode dielectrophoretic system is also provided. Applications extend to self-fabricating nanoelectronics, nanomachines, nanochemistry and nanobiochemistry. A nanoelectrode dielectrophoretic system having an extended nanoelectrode for use in applications including the self-fabrication of a nanowire, as well as methods for fabricating the same, are also provided.Type: GrantFiled: December 20, 2010Date of Patent: August 11, 2015Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Peter J. Burke, Shengdong Li, Lifeng Zheng
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Publication number: 20110162966Abstract: Systems and methods are provided for the manipulation of a polarizable object with a pair of elongated nanoelectrodes using dielectrophoresis. The nanoelectrodes can be carbon nanotubes and are coupled with one or more time-varying voltage sources to create an electric field gradient in a gap between the nanotubes. The gradient induces the movement of a polarizable object in proximity with the field. The nanotube pair can be used to trap a single polarizable object in the gap. A method of fabricating a nanoelectrode dielectrophoretic system is also provided. Applications extend to self-fabricating nanoelectronics, nanomachines, nanochemistry and nanobiochemistry. A nanoelectrode dielectrophoretic system having an extended nanoelectrode for use in applications including the self-fabrication of a nanowire, as well as methods for fabricating the same, are also provided.Type: ApplicationFiled: December 20, 2010Publication date: July 7, 2011Inventors: Peter J. Burke, Shengdong Li, Lifeng Zheng
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Patent number: 7857956Abstract: Systems and methods are provided for the manipulation of a polarizable object with a pair of elongated nanoelectrodes using dielectrophoresis. The nanoelectrodes can be carbon nanotubes and are coupled with one or more time-varying voltage sources to create an electric field gradient in a gap between the nanotubes. The gradient induces the movement of a polarizable object in proximity with the field. The nanotube pair can be used to trap a single polarizable object in the gap. A method of fabricating a nanoelectrode dielectrophoretic system is also provided. Applications extend to self-fabricating nanoelectronics, nanomachines, nanochemistry and nanobiochemistry. A nanoelectrode dielectrophoretic system having an extended nanoelectrode for use in applications including the self-fabrication of a nanowire, as well as methods for fabricating the same, are also provided.Type: GrantFiled: February 27, 2004Date of Patent: December 28, 2010Assignee: The Regents of the University of CaliforniaInventors: Peter J. Burke, Shengdong Li, Lifeng Zheng
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Publication number: 20050126913Abstract: Systems and methods are provided for the manipulation of a polarizable object with a pair of elongated nanoelectrodes using dielectrophoresis. The nanoelectrodes can be carbon nanotubes and are coupled with one or more time-varying voltage sources to create an electric field gradient in a gap between the nanotubes. The gradient induces the movement of a polarizable object in proximity with the field. The nanotube pair can be used to trap a single polarizable object in the gap. A method of fabricating a nanoelectrode dielectrophoretic system is also provided. Applications extend to self-fabricating nanoelectronics, nanomachines, nanochemistry and nanobiochemistry. A nanoelectrode dielectrophoretic system having an extended nanoelectrode for use in applications including the self-fabrication of a nanowire, as well as methods for fabricating the same, are also provided.Type: ApplicationFiled: February 27, 2004Publication date: June 16, 2005Inventors: Peter Burke, Shengdong Li, Lifeng Zheng