Patents by Inventor Yifeng Chen

Yifeng Chen 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: 20180303238
    Abstract: This invention provides an integrated chair frame motor transmission assembly for adjusting the position of a chair backrest bracket, including a bracket. A fixing part fixed to the chair frame is arranged at an upper end and a lower end of the bracket. A motor speed reducing module is fixed to the bracket, and one end of a screw rod is connected to the motor speed reducing module. The other end of the screw rod is connected to a fixing block, and the fixing block is fixed to the bracket. A sliding groove is formed in the bracket, and a sliding block is arranged corresponding to the sliding groove. The screw rod is matched with and connected to the sliding block and drives the sliding block to move back and forth along the sliding groove.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 25, 2018
    Applicant: TAIZHOU LUCKY PRETTY MACHINERY Co.,Ltd.
    Inventors: Mingyang MA, Yifeng CHEN, Shaoyu MA
  • Publication number: 20170271878
    Abstract: A photovoltaic intelligent power supply, comprising a plurality of unit modules, and a communication unit (103) and a control unit (106), wherein all the unit modules are connected to the control unit (106) and the communication unit (103); each unit module comprises an input collection unit (101), a data acquisition unit (102), a boost unit (104), an arc isolation unit (105) and an anti-PID unit (107), wherein the input collection unit (101) is connected to a photovoltaic module; the data acquisition unit (102) is configured to acquire voltage and current state signals; the boost unit (104) is configured to perform interleaving chopping and operate in an MPPT mode; the arc isolation unit (105) is configured to receive instructions sent by the control unit (106) to execute opening and closing; and the anti-PID unit (107) is configured to receive instructions sent by the control unit (106) so as to generate proper DC voltages to be applied between a negative electrode of a cell panel and the ground.
    Type: Application
    Filed: October 29, 2015
    Publication date: September 21, 2017
    Applicant: CRRC ZHUZHOU INSTITUTE CO., LTD.
    Inventors: Jianghua FENG, Fang JIAN, Qiang WU, Jijing GUO, Hengliang WU, Honghao ZHANG, Yifeng CHEN, Haiyan TANG, Nan WANG, Xianggui ZHAO, Zhaoyi LIU, Shaolong LI, Rong ZHANG
  • Publication number: 20160233356
    Abstract: Disclosed are a back-surface bridge type contact electrode of a crystalline silicon solar battery and a preparation method therefor. The back-surface bridge type contact electrode of a crystalline silicon solar battery includes a local electrode connected to a local back surface field and a back surface electrode which is covered with a back surface passivation film on a contact surface with a silicon wafer substrate, at least one bridge electrode is provided between the local electrode and the back surface electrode, the contact surface of the bridge electrode and the silicon wafer substrate is also covered with the back surface passivation film, the local electrode is connected to the back surface electrode via the bridge electrode, and the back surface passivation film is also provided, besides at the connection region of the bridge electrode, between the local electrode and the back surface electrode.
    Type: Application
    Filed: July 31, 2014
    Publication date: August 11, 2016
    Inventors: Yifeng CHEN, Pierre J. VERLINDEN, Zhiqiang FENG, Hui SHEN, Pietro P. ALTERMATT
  • Publication number: 20160226424
    Abstract: A driving system for a multi-energy power supply motor comprises a distributed power supply, a frequency converter, a public power grid, and a motor load. The distributed power supply is connected to a direct-current bus of the frequency converter, and is used for acquiring and transmitting a direct current to the frequency converter. The frequency converter comprises a first bidirectional current transformer, an inverter, and a direct-current bus. The first bidirectional current transformer is connected to the inverter through the direct-current bus. The first bidirectional current transformer is connected to the public power grid. The inverter is connected to the motor load. The distributed power supply, the public power grid and the motor load are separately connected to the frequency converter.
    Type: Application
    Filed: December 16, 2013
    Publication date: August 4, 2016
    Applicant: CSR ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD
    Inventors: Jianquan LI, Fang JIAN, Xiaoyun WU, Yun LI, Wenjie ZHAI, Rende GUAN, Jian CUI, Yuxu CHENG, Yifeng CHEN, Haiyan TANG
  • Patent number: 9391828
    Abstract: Methods and systems of maintaining a computed relationship between components in a network are disclosed. A relationship represents one or more connections between components. Discovered relationships between components in the network are detected. A discovered relationship represents a direct connection between components. A computed relationship between a class of source component and a class of target component is determined. The computed relationship comprises a number of discovered relationships that, when combined, represent connections between one or more types of the source component and one or more types of the target component. The computed relationship is stored. The discovered relationships that comprise the computed relationship are monitored for a change event. The change event may represent a change in the network, such as the addition or deletion of one or more components.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: July 12, 2016
    Assignee: EMC Corporation
    Inventors: Alex Dubrovsky, Vikram Patki, Yifeng Chen
  • Publication number: 20160150745
    Abstract: The present invention provides a method for rice cultivation via drip irrigation under a plastic film, comprising seed preparation, land preparation, sowing, seedling management, irrigation management, fertilization management, pest control and other steps, wherein seeding density of the sowing is 33300-36000 holes/mu, preferably 33300 holes/mu, or the seeding density is 30500-32600 holes/mu, preferably 30500 holes/mu. Previously, the conventional film with width of 105 cm or 145 cm is adopted for cotton culture stage in Xinjiang, but these films have following disadvantages: lower land utilization rate, resulting in relatively low seeding density, and difficulty in the process of adjusting row spacing and increasing seeding density, lower ground coverage rate, larger area of open ground, causing more weed relatively. Therefore, using wide film cultivation obtains relatively high yield if other planting conditions are the same.
    Type: Application
    Filed: December 27, 2013
    Publication date: June 2, 2016
    Applicant: XINJIANG TIANYE (GROUP) CO., LTD.
    Inventors: LIN CHEN, YONGQIANG WANG, YIFENG CHEN, GAOHUA LI, CHENGCHENG HU
  • Publication number: 20160123990
    Abstract: Virus vectors, virus particles, and methods and uses of screening for, detecting, analyzing and determining amounts of virus antibody, or neutralizing antibody activity of samples are provided. Such virus vectors, virus particles, and methods and uses are applicable to a broad range of virus types, such as lentiviruses, adenovirus, and adeno-associated virus (AAV) serotypes.
    Type: Application
    Filed: July 11, 2014
    Publication date: May 5, 2016
    Inventors: Katherine A. HIGH, Federico MINGOZZI, Yifeng CHEN
  • Patent number: 9170753
    Abstract: A method of providing memory accesses for a multi-core processor includes reserving a group of pins of a multi-core processor to transmit either data or address information in communication with one or more memory chips, receiving memory access requests from the plurality of processor cores, determining granularity of the memory access requests by a memory controller, and dynamically adjusting the number of pins in the group of pins to be used to transmit address information based with the granularity of the memory access requests.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: October 27, 2015
    Assignee: Peking University
    Inventors: Yifeng Chen, Weilong Cui, Xiang Cui
  • Publication number: 20140351525
    Abstract: A method of providing memory accesses for a multi-core processor includes reserving a group of pins of a multi-core processor to transmit either data or address information in communication with one or more memory chips, receiving memory access requests from the plurality of processor cores, determining granularity of the memory access requests by a memory controller, and dynamically adjusting the number of pins in the group of pins to be used to transmit address information based with the granularity of the memory access requests.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 27, 2014
    Applicant: Peking University
    Inventors: Yifeng Chen, Weilong Cui, Xiang Cui
  • Patent number: 7694007
    Abstract: A management control center communicates with multiple agents in a storage area network. On behalf of the management control center, the agents communicate with a switch resource management entity that maintains configuration information about resources such as a group or groups of switches in the storage area network. Based on a chain of communications from the management control center through the agents to the remote management entity, the management control center can indirectly learn about a configuration of switch resources in the storage area network. The agent utilizes a calculated current load value (e.g., a value indicating a relative burden placed on the remote management entity to service the forwarded set of requests) to selectively forwards requests to the switch resource management entity. This technique ensures that the switch resource management entity is not overwhelmed by a task of servicing too many requests at the same time.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: April 6, 2010
    Assignee: EMC Corporation
    Inventors: Alexander Dubrovsky, Yifeng Chen, Daniel J. Strom, James E. Lavallee
  • Patent number: 7653712
    Abstract: An agent of a storage area network generates a first checksum value for a first set of zone configuration data used to at least initially configure the storage area network. At a later time, after a potential change to the first zone configuration data of the storage area network, the agent generates a checksum value based on current zone configuration data presently used to configure the zone in the storage area network. The agent then compares the first checksum value and the second checksum value to identify whether there has been a change to the first zone configuration data. That is, if the first checksum value does not equal the second checksum value, the agent flags that there has been a change to zone configuration data of the storage area network. Users can control behavior of zoning importation and activation depending on whether current zone configuration data has been changed.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: January 26, 2010
    Assignee: EMC Corporation
    Inventors: Alexander Dubrovsky, Xiaojun Wu, Yifeng Chen, Yong Cai, James E. Lavallee
  • Patent number: 7457824
    Abstract: An agent in a storage area network communicates with a management entity in the storage area network to discover a group of resources in the storage area network controlled by the management entity. In response to discovering the group of resources, the agent associates member resources (e.g., and their respective names) of the group of resources to a corresponding group identifier to which the member resources belong. The agent reports i) the corresponding group identifier and ii) the member resources of the group of resources controlled by the management entity to a management control center that assigns one of multiple agents in the storage area network to manage the group of resources based on communications with the management entity. After a step of assigning, the management control center can initiate an assigned agent to control the group of resources.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: November 25, 2008
    Assignee: EMC Corporation
    Inventors: Daniel J. Strom, Alexander Dubrovsky, James E. Lavallee, Yifeng Chen
  • Publication number: 20080041121
    Abstract: A mechanical counting device (25) provided within a lock (20), the lock (20) including a latch (26) and a hasp (22), wherein when the latch (26) is engaged with the hasp (22), the lock (20) is locked, and when the hasp (22) is released from the latch (26), the lock (20) is unlocked, the counting device (25) comprising: an actuator (5) to actuate in response to the hasp (22) engaging with the latch (26); and a visual indication (10) to visually indicate whether the lock (20) has been relocked; wherein each actuation of the actuator (5) causes the visual indication (10) to alter and indicate that the lock (20) has been relocked another time.
    Type: Application
    Filed: June 29, 2007
    Publication date: February 21, 2008
    Applicant: Victory Dragon International Industrial Company Limited
    Inventors: Yifeng Chen, Hay Chu
  • Publication number: 20070157686
    Abstract: A mechanical counting device for a lock, comprising; a bottom support (1); a counting gear (2); a counting rotation lever (4); a button (5); a stop lever (6) to stop the counting gear (2) returning back to the original position when the button (5) is activated; and a carry-over pinion (8); wherein activating the button (5) causes; driving the counting rotation lever (4) to move and cause the counting gear (2) to rotate, resetting a counting gear spindle (12) back to zero, propping the carry-over pinion (8) against and driving the counting gear (2) to perform carry-over, and propping an elastic plate (7) against a carry-over pinion spindle (9) to move within a hole of the bottom support (1).
    Type: Application
    Filed: December 19, 2006
    Publication date: July 12, 2007
    Applicant: Victory Dragon International Industrial Company Limited
    Inventors: Yifeng Chen, Hay Chu
  • Patent number: 7003527
    Abstract: Mechanisms and techniques provide a management application providing an enterprise storage area network application programming interface for managing elements in a storage area network. The management application initializes a plurality of access wrappers that each defines operations for management of a respective class of elements operating within the storage area network. The management application provides, to a management client, connection data associated with a specific element associated with one of the plurality of access wrappers. The connection data identifies connection data parameters for performing management of the specific element in the storage area network. The management application receives at least one generic management command for the specific element. The generic management command includes at least a portion of the associated connection data for the specific element.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 21, 2006
    Assignee: EMC Corporation
    Inventors: James Edward Lavallee, Alex Dubrovsky, Kevin M. Ligozio, Anthony Michael Fiorentino, Yifeng Chen