Patents by Inventor Chae-hoon Sohn

Chae-hoon Sohn 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).

  • Nozzle assembly of vacuum cleaner
    Patent number: 7856694
    Abstract: A nozzle assembly of a vacuum cleaner is provided that includes a casing, a suction port, a drum brush, a fan, and a blocking plate. The drum brush is rotatably disposed in the casing so drum bristles hit a surface being cleaned. The fan is disposed in the casing to be rotated by air drawn in through the suction port so that the fan rotates the drum brush. The blocking plate is adjacent to the front of the fan to screen most of the fan except for a lower portion of the fan. The fan includes a circular fan body, a shaft member, and a plurality of blades. The inside edge of each of the blades is at a distance from the shaft member so that the drawn-in air passes through a space defined between the inside edge of each of the blades and the shaft member.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: December 28, 2010
    Assignee: Samsung Gwangju Electronics co., Ltd.
    Inventors: Sung-cheol Lee, Jang-keun Oh, Hwa-gyu Song, Chae-hoon Sohn, I-sun Park
  • Nozzle assembly of vacuum cleaner
    Publication number: 20090038110
    Abstract: A nozzle assembly of a vacuum cleaner is provided that includes a casing, a suction port, a drum brush, a fan, and a blocking plate. The drum brush is rotatably disposed in the casing so drum bristles hit a surface being cleaned. The fan is disposed in the casing to be rotated by air drawn in through the suction port so that the fan rotates the drum brush. The blocking plate is adjacent to the front of the fan to screen most of the fan except for a lower portion of the fan. The fan includes a circular fan body, a shaft member, and a plurality of blades. The inside edge of each of the blades is at a distance from the shaft member so that the drawn-in air passes through a space defined between the inside edge of each of the blades and the shaft member.
    Type: Application
    Filed: January 10, 2008
    Publication date: February 12, 2009
    Inventors: Sung-cheol Lee, Jang-keun Oh, Hwa-gyu Song, Chae-hoon Sohn, I-sun Park