Patents by Inventor Xianfa Li

Xianfa Li 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: 11871855
    Abstract: The present invention relates to a device for taking care of infants, and a driving mechanism. The driving mechanism comprises a support, a first motion assembly and a second motion assembly, wherein a seat is arranged on the support, and since the first motion assembly and the second motion assembly are both arranged on the support, the first motion assembly drives the seat to swing in a first direction relative to the support, and the second motion assembly drives the seat to swing in a second direction relative to the support. Since the first direction intersects with the second direction, the motion of the seat is the superposition of the swinging in the first direction and the swinging in the second direction.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: January 16, 2024
    Assignee: ZHONGSHAN CITY BOBIE BABY PRODUCT CO., LTD.
    Inventor: Xianfa Li
  • Publication number: 20230124305
    Abstract: The present invention relates to a device for taking care of infants, and a driving mechanism. The driving mechanism comprises a support, a first motion assembly and a second motion assembly, wherein a seat is arranged on the support, and since the first motion assembly and the second motion assembly are both arranged on the support, the first motion assembly drives the seat to swing in a first direction relative to the support, and the second motion assembly drives the seat to swing in a second direction relative to the support. Since the first direction intersects with the second direction, the motion of the seat is the superposition of the swinging in the first direction and the swinging in the second direction.
    Type: Application
    Filed: June 30, 2020
    Publication date: April 20, 2023
    Inventor: Xianfa LI
  • Patent number: 8754566
    Abstract: A laminated stator and a method for making a laminated stator of an electric motor. The method includes arranging a plurality of stator laminations into lamination stacks spaced axially from one another, each lamination stack including a first group of stator laminations including an annular portion and a plurality of tooth portions extending from a periphery of the annular portion, and a second group of stator laminations including only tooth portions positioned to correspond with the tooth portions of said first group. The method further includes winding stator windings around selected subsets of the plurality of teeth while the lamination stacks are spaced axially and meshing the lamination stacks with one another so the annular portions of the lamination stacks are axially adjacent one another and the plurality of teeth are intermeshed with the plurality of another stack.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: June 17, 2014
    Assignee: Nidec Motor Corporation
    Inventors: Ruimei Wang, Xianfa Li, Liang Sun, Sifa Gao
  • Publication number: 20110148245
    Abstract: A laminated stator and a method for making a laminated stator of an electric motor. The method includes arranging a plurality of stator laminations into lamination stacks spaced axially from one another, each lamination stack including a first group of stator laminations including an annular portion and a plurality of tooth portions extending from a periphery of the annular portion, and a second group of stator laminations including only tooth portions positioned to correspond with the tooth portions of said first group. The method further includes winding stator windings around selected subsets of the plurality of teeth while the lamination stacks are spaced axially and meshing the lamination stacks with one another so the annular portions of the lamination stacks are axially adjacent one another and the plurality of teeth are intermeshed with the plurality of another stack.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: Nidec Motor Corporation
    Inventors: Ruimei Wang, Xianfa Li, Liang Sun, Sifa Gao
  • Patent number: D1036882
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: July 30, 2024
    Assignee: ZHONGSHAN CITY BOBIE BABY PRODUCT CO., LTD.
    Inventors: Xianfa Li, Guoliang Zeng