Patents by Inventor Yun-Feng Zhang

Yun-Feng Zhang 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).

  • Patent number: 10554156
    Abstract: A motor driving circuit, an application device, and a motor braking method are provided. The driving circuit includes an inverter, a braking unit, and a MCU. The inverter is configured to drive a motor. The braking unit includes a sampling circuit, a discharge circuit, and a switch group. The MCU is connected to the sampling circuit, the discharge circuit, and the switch group, and is configured to control the sampling circuit to detect a voltage across the inverter and obtain a detected value when receiving the emergency signal, compare the detected value to a preset voltage or a preset voltage range, and transmit a control signal to activate the discharge circuit when the detected value is greater than the preset voltage or exceeds the preset voltage range.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 4, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: You Qing Xiang, Shi Wen Wang, Wu Feng Qiu, Ying Chao Li, Yun Chen, Lian Zhong Zhang, Jun Zhang
  • Publication number: 20200014165
    Abstract: An injection mold for molding an electrical connector assembly which includes a plurality of terminals, a clamping component located above the plurality of the terminals, and a base body fastened to the plurality of the terminals and the clamping component. The injection mold includes a lower mold and an upper mold. The lower mold has a plurality of lower terminal grooves. Lower portions of the plurality of the terminals are placed in the plurality of the lower terminal grooves. The clamping component is placed on the lower mold. The upper mold is engaged with and mounted on the lower mold. A molding cavity is formed between the upper mold and the lower mold. The upper mold has a plurality of upper terminal grooves. Upper portions of the plurality of the terminals are placed in the plurality of the upper terminal grooves.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 9, 2020
    Inventors: YUN-FENG ZHANG, ZHI-BIN DONG, FENG ZHU
  • Publication number: 20190186492
    Abstract: A positive displacement compressor includes a positive displacement compressor rotor; a shaft operative to support the positive displacement compressor rotor; a bearing operative to support the shaft; a first structure having a first squeeze film compression surface; and a second structure having a second squeeze film compression surface spaced apart radially from the first squeeze film compression surface. The first and second structures are constructed to jointly form a squeeze film damper using the first and second squeeze film compression surfaces. The squeeze film damper is operative to provide squeeze film damping of vibrations. An annular oil discharge groove is disposed adjacent to a first end of the squeeze film damper. A first o-ring gland houses a circumferential-sealing o-ring disposed proximate to the first end of the squeeze film damper. A second o-ring gland houses a second circumferential-sealing o-ring disposed proximate to a second end of the squeeze film damper.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 20, 2019
    Inventors: Yi Liu, Blake Leary, Xiao Jun Li, Yun Feng Zhang
  • Patent number: 8370864
    Abstract: An optical disc player includes a main body, a lid, a rotator, and a protective structure. The lid is pivotably connected to the main body. The rotator is disposed in the main body for rotating discs and can be covered by the lid. The protective structure is disposed between the rotator and the lid. The protective structure is capable of suppressing noise and/or damage caused by contact between the rotator and the lid when the rotator operates.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: February 5, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hong Li, Ting-Ting Zhao, Yun-Feng Zhang, Wei Liu
  • Publication number: 20120072929
    Abstract: An optical disc player includes a main body, a lid, a rotator, and a protective structure. The lid is pivotably connected to the main body. The rotator is disposed in the main body for rotating discs and can be covered by the lid. The protective structure is disposed between the rotator and the lid. The protective structure is capable of suppressing noise and/or damage caused by contact between the rotator and the lid when the rotator operates.
    Type: Application
    Filed: March 28, 2011
    Publication date: March 22, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD .
    Inventors: HONG LI, TING-TING ZHAO, YUN-FENG ZHANG, WEI LIU
  • Publication number: 20100228648
    Abstract: A mold management system connected to a shopping floor control (SFC) system is operable to manage a plurality of molds. Each of the plurality of molds bears an exclusive barcode containing basic information of the mold. The mold management system includes a query module, a selection module, an input registration module, and a notification module. The query module queries basic information for requested molds in a database, and production information from the SFC system to obtain a scheduled usage history of the requested molds. The selection module selects a mold with usage history most exceeding the scheduled usage history to be outbound. The input registration module updates a usage history of the outbound mold when the outbound mold is to be inbound. The notification module determines whether the inbound mold is to be discarded based on the updated usage history.
    Type: Application
    Filed: October 21, 2009
    Publication date: September 9, 2010
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: CHUN-LIN ZHOU, TENG-CHIAO SHEN, YUN-FENG ZHANG
  • Patent number: 7698003
    Abstract: A standard operating procedure (SOP) file generating system (12) includes a drawing selection module (120), an information reading module (121), a data determining module (122), a machining type determining data module (124), and a file generating module (127). The drawing selection module selects an engineering drawing. The information reading module reads product information and machining data of the engineering drawing. The data determining module determines whether the machining data accords with machining requirement. The machining type determining module determines a machining type. The file generating module generates an SOP file.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: April 13, 2010
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Hu, Fu-Shun Huang, Yun-Feng Zhang, Chun-Lin Zhou, Hua Wei
  • Publication number: 20090222843
    Abstract: An automatic command statistic system includes a detecting module, a determining module, and a recording module. The detecting module detects a command called by a user of an application and one or more calling associations of the called command. The determining module determines if the called command falls into a statistic pool that contains all commands of the application that need to be recorded. The recording module records one or more statistics regarding a command run count and calling associations of the called command that falls into the statistic pool. An automatic command statistic method is also provided.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 3, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yang Hu, Teng-Chiao Shen, Yun-Feng Zhang
  • Publication number: 20080236356
    Abstract: A punching device comprises a pushing pole, an adjusting portion, a supporting portion, and a spring. The pushing pole comprises a first threaded end and a second threaded end. The adjusting portion defines a screw hole therein, through which the adjusting portion is fixed to the first end of the pushing pole. The supporting portion is located on the pushing pole, with the pushing pole passing through a through hole in the supporting portion. The spring is disposed around the pushing pole, with two ends respectively abutting against the adjusting portion and the supporting portion.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 2, 2008
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: KUO-JUNG HUANG, SHU-WEI ZHOU, FU-SHUN HUANG, CHUN-NAN OU, CHIA-HSIANG OU, YUN-FENG ZHANG
  • Publication number: 20080048377
    Abstract: A positioning apparatus (10), mounted on a machine tool (60), for positioning a workpiece (30) on the machine tool, comprises a positioning member (12), at least one sliding element (14), and at least one positioning element (18). The positioning member comprises a first portion (120) comprising a recessed portion (122) and at least one receiving hole (128). The sliding element slidably received in the recessed portion, the sliding element comprising a first engaging portion (142). The positioning element comprises a second engaging portion (182) and a positioning portion (186) connected to the second engaging portion. The second engaging portion extends through the receiving hole and is engaged with the first engaging portion.
    Type: Application
    Filed: December 22, 2006
    Publication date: February 28, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: FU-SHUN HUANG, YI-HUA LIU, SHU-WEI ZHOU, JIAN LUO, YUN-FENG ZHANG
  • Publication number: 20080022372
    Abstract: The method is used in a network system (60) and includes at least one client (30), a network (20), and a server (40). The method includes receiving user information from a user in the client; sending the user information to a server via the network; determining whether the user information is valid after the server receives the user information; searching user authority information corresponding to the user information if the user information is valid; sending the searched user authority information to the client; and setting a user authority according to the searched user authority information after the client receives the searched user authority information.
    Type: Application
    Filed: December 28, 2006
    Publication date: January 24, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: YUN-FENG ZHANG, FU-SHUN HUANG, CHUN-LIN ZHOU, YANG HU
  • Publication number: 20070191981
    Abstract: A sheet metal processing method for generating punching codes and laser codes includes: reading an engineering drawing, and setting punching parameters; laying out workpieces, and generating punching multi-layout data; selecting and laying out corresponding punching tools for the workpieces and tooling-holes, and generating punching tool layout data; generating the punching codes according to the punching parameters, the punching tool layout data, and the punching multi-layout data, and saving the punching codes in a saving sub-system; retrieving the punching parameters, the punching tool layout data, and the punching multi-layout data of the punching codes, and automatically setting laser parameters and laser multi-layout data; and generating the laser codes according to the laser parameters and the laser multi-layout data. A sheet metal processing system for generating the punching codes and the laser codes is also provided.
    Type: Application
    Filed: October 16, 2006
    Publication date: August 16, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Kuo-Jung Huang, Feng-Ping Tsai, Ze-Jun Dai, Yun-Feng Zhang, Jin-Song Li, Chun-Lin Zhou
  • Publication number: 20070142958
    Abstract: A standard operating procedure (SOP) file generating system (12) includes a drawing selection module (120), an information reading module (121), a data determining module (122), a machining type determining data module (124), and a file generating module (127). The drawing selection module selects an engineering drawing. The information reading module reads product information and machining data of the engineering drawing. The data determining module determines whether the machining data accords with machining requirement. The machining type determining module determines a machining type. The file generating module generates an SOP file.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 21, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: YANG HU, FU-SHUN HUANG, YUN-FENG ZHANG, CHUN-LIN ZHOU, HUA WEI
  • Patent number: D823810
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 24, 2018
    Assignee: CHENG UEI PRECISION INDUSTRY CO., LTD.
    Inventors: Yun-Feng Zhang, Zhi-Bin Dong, Feng Zhu