Patents by Inventor Choa-Ming Liu

Choa-Ming Liu 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).

  • Transformer structure
    Patent number: 8188825
    Abstract: A transformer includes a base, a magnetic core assembly and at least one winding coil assembly. The base includes a first receptacle and at least one first receiving recess. The magnetic core assembly includes a first magnetic part, a second magnetic part and a third magnetic part. The base is arranged between the first magnetic part and the second magnetic part. The first magnetic part has a first post accommodated within the first receptacle. The at least one winding coil assembly is disposed on the base. The third magnetic part is optionally accommodated within the first receiving recess, so that an air gap between the third magnetic part and the first magnetic part/the second magnetic part is adjustable.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 29, 2012
    Assignee: Delta Electronics, Inc.
    Inventors: Choa-Ming Liu, Chih-Ming Chen, Yu-Chun Lai
  • TRANSFORMER STRUCTURE
    Publication number: 20100289607
    Abstract: A transformer includes a base, a magnetic core assembly and at least one winding coil assembly. The base includes a first receptacle and at least one first receiving recess. The magnetic core assembly includes a first magnetic part, a second magnetic part and a third magnetic part. The base is arranged between the first magnetic part and the second magnetic part. The first magnetic part has a first post accommodated within the first receptacle. The at least one winding coil assembly is disposed on the base. The third magnetic part is optionally accommodated within the first receiving recess, so that an air gap between the third magnetic part and the first magnetic part/the second magnetic part is adjustable.
    Type: Application
    Filed: November 24, 2009
    Publication date: November 18, 2010
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Choa-Ming Liu, Chih-Ming Chen, Yu-Chun Lai