Patents by Inventor Sang Hyo Choi

Sang Hyo Choi 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: 6849976
    Abstract: A housing structure for geared motors is disclosed. The housing structure is designed to seal the spaces between a stator core and first and second housings to prevent infiltration of moisture and impurities to a motor's drive part through the spaces or formation and growth of ice on the drive part, thus the motor always being smoothly started in its operation, without having a high drive torque undesirably increased to remove ice or impurities from the drive part. The first housing has a support part functioning to rotatably support a first end of the rotating shaft on the stator core, while the second housing has a cup part functioning to rotatably support a second end of the rotating shaft on the stator core. The support part of the first housing includes a first spherical bearing, a first seat part, and a bearing seat. The first housing also has a cylindrical part assembled with the stator core, and a shaft hole rotatably supporting an output shaft of the motor.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: February 1, 2005
    Assignee: SPG Co., LTD
    Inventors: Jin Goon Yoon, Nak Sun Choi, Sang Hyo Choi
  • Publication number: 20040070297
    Abstract: A housing structure for geared motors is disclosed. The housing structure is designed to seal the spaces between a stator core and first and second housings to prevent infiltration of moisture and impurities to a motor's drive part through the spaces or formation and growth of ice on the drive part, thus the motor always being smoothly started in its operation, without having a high drive torque undesirably increased to remove ice or impurities from the drive part. The first housing has a support part functioning to rotatably support a first end of the rotating shaft on the stator core, while the second housing has a cup part functioning to rotatably support a second end of the rotating shaft on the stator core. The support part of the first housing includes a first spherical bearing, a first seat part, and a bearing seat. The first housing also has a cylindrical part assembled with the stator core, and a shaft hole rotatably supporting an output shaft of the motor.
    Type: Application
    Filed: October 28, 2002
    Publication date: April 15, 2004
    Inventors: Jin Goon Yoon, Nak Sun Choi, Sang Hyo Choi