Patents by Inventor He Chi

He Chi 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: 11056958
    Abstract: A rotor of an electric motor includes a rotating shaft, a rotor core and a commutator fixed to the rotating shaft, and a first sleeve, a second sleeve and a third sleeve arranged around the rotating shaft. The first sleeve is located on a side of the rotor core away from the commutator and abuts against the rotor core, the second sleeve is located between the rotor core and the commutator, and the third sleeve is located on a side of the commutator away from the rotor core.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: July 6, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Jingxin Shi, Sijun Zhao, Luyan Bi, Pingman Zhang, Xionghui Liu, Lang Dai, Cong Lv, Feifei Huang, He Chi, Baoqiang Cheng, Seungpun Ho, Dawei Zhou, Zhijun Li, Zhiyu Chen
  • Patent number: 10559935
    Abstract: A brush used to contact with a commutator, includes a brush body which includes two opposite axial end faces and a protruding portion projecting from the brush body toward the commutator. The protruding portion includes a first surface, a second surface and at least two teeth. The first surface and the second surface are respectively adjacent to the two axial end faces. Angles formed between the first surface and the second surface and corresponding adjacent axial end faces are obtuse. The teeth is located between the first surface and the second surface, and extends generally along a circumferential direction of the commutator. The ratio of a total width of the at least two teeth in an axial direction of the brush to an axial height of the brush body is in the range of 0.25-0.75. An electric motor including the brush is also provided.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 11, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Jingxin Shi, Sijun Zhao, Luyan Bi, Pingman Zhang, Lang Dai, Yunchang Yu, Guiqing Liao, Xionghui Liu, Zhiyu Chen, Cong Lv, He Chi
  • Publication number: 20190296625
    Abstract: A rotor of an electric motor includes a rotating shaft, a rotor core and a commutator fixed to the rotating shaft, and a first sleeve, a second sleeve and a third sleeve arranged around the rotating shaft. The first sleeve is located on a side of the rotor core away from the commutator and abuts against the rotor core, the second sleeve is located between the rotor core and the commutator, and the third sleeve is located on a side of the commutator away from the rotor core.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 26, 2019
    Inventors: Jingxin SHI, Sijun ZHAO, Luyan BI, Pingman ZHANG, Xionghui LIU, Lang DAI, Cong LV, Feifei HUANG, He CHI, Baoqiang CHENG, Seungpun HO, Dawei ZHOU, Zhijun LI, Zhiyu CHEN
  • Publication number: 20180166843
    Abstract: A brush used to contact with a commutator, includes a brush body which includes two opposite axial end faces and a protruding portion projecting from the brush body toward the commutator. The protruding portion includes a first surface, a second surface and at least two teeth. The first surface and the second surface are respectively adjacent to the two axial end faces. Angles formed between the first surface and the second surface and corresponding adjacent axial end faces are obtuse. The teeth is located between the first surface and the second surface, and extends generally along a circumferential direction of the commutator. The ratio of a total width of the at least two teeth in an axial direction of the brush to an axial height of the brush body is in the range of 0.25-0.75. An electric motor including the brush is also provided.
    Type: Application
    Filed: November 21, 2017
    Publication date: June 14, 2018
    Inventors: Jingxin Shi, Sijun Zhao, Luyan Bi, Pingman Zhang, Lang Dai, Yunchang Yu, Guiqing Liao, Xionghui Liu, Zhiyu Chen, Cong Lv, He Chi
  • Patent number: 8072861
    Abstract: A method for determining the completeness of an optical disc and a method for playing the optical disc are provided. The method for playing the optical disc includes: performing focusing on and tracking on the optical disc; detecting whether the optical disc contains any data if the focusing on succeeds while the tracking on fails; if the optical disc contains data, turning on a servo system to perform focusing on and tracking on to the area containing the data and determining whether a file information area contains a file system; if the file information area does not contain any file system, reading the outmost data in a video data area to locate a file allocation data table; and playing the data stored in the video data area according to the file allocation data table.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: December 6, 2011
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: He-Chi Chang, Lu-Chia Tseng
  • Patent number: 7978954
    Abstract: A rotation speed control apparatus for a disk recorder is provided, which includes a buffer monitor and a rotation speed decision maker. According to the amount of data in the buffer, the buffer monitor outputs a buffer data. According to the buffer data, the rotation speed decision maker outputs a disk-rotation-speed signal. According to the disk-rotation-speed signal, the disk recording speed of an optical storage system is adjusted by the rotation speed control apparatus to avoid disk recording interruption due to lack of buffer data.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: July 12, 2011
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: He-Chi Chang, Yi-Chun Lin
  • Publication number: 20090109821
    Abstract: A method for determining the completeness of an optical disc and a method for playing the optical disc are provided. The method for playing the optical disc includes: performing focusing on and tracking on the optical disc; detecting whether the optical disc contains any data if the focusing on succeeds while the tracking on fails; if the optical disc contains data, turning on a servo system to perform focusing on and tracking on to the area containing the data and determining whether a file information area contains a file system; if the file information area does not contain any file system, reading the outmost data in a video data area to locate a file allocation data table; and playing the data stored in the video data area according to the file allocation data table.
    Type: Application
    Filed: January 10, 2008
    Publication date: April 30, 2009
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: He-Chi Chang, Lu-Chia Tseng
  • Publication number: 20070217766
    Abstract: A rotation speed control apparatus for a disk recorder is provided, which includes a buffer monitor and a rotation speed decision maker. According to the amount of data in the buffer, the buffer monitor outputs a buffer data. According to the buffer data, the rotation speed decision maker outputs a disk-rotation-speed signal. According to the disk-rotation-speed signal, the disk recording speed of an optical storage system is adjusted by the rotation speed control apparatus to avoid disk recording interruption due to lack of buffer data.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 20, 2007
    Applicant: SUNPLUS TECHNOLOGY CO., LTD.
    Inventors: He-Chi Chang, Yi-Chun Lin