Patents by Inventor Chang-Hwa Sun

Chang-Hwa Sun 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).

  • Upright vacuum cleaner
    Patent number: 9027200
    Abstract: Provided is an upright vacuum cleaner. The upright vacuum cleaner includes a suction nozzle comprising a plurality of wheels, a main body relatively rotatable with respect to the suction nozzle, and a steering device steering the plurality of wheels to correspond to the movement of the main body.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: May 12, 2015
    Assignee: LG Electronics Inc.
    Inventors: Chung-Ook Chong, Kyu-Chun Choi, Geun-Bae Hwang, Chang-Hwa Sun
  • Vacuum cleaner
    Patent number: 8613125
    Abstract: The present embodiments relate to a vacuum cleaner. The vacuum cleaner according to present embodiments includes a main body; a wheel for moving the main body; a driving unit for driving the wheel; a sensor for sensing movement of the main body; and a controller for controlling the driving unit according to data sensed by the sensor.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: December 24, 2013
    Assignee: LG Electronics Inc.
    Inventors: Kyeong-Seon Jeong, Kyu-Chun Choi, Geun-Bae Hwang, Chang-Hwa Sun, Ju-Young Min, Chung-Ook Chong
  • Nozzle for a vacuum cleaner
    Patent number: 8434194
    Abstract: A nozzle for a vacuum cleaner is provided, the nozzle having a structure in which suction performance may be improved. The nozzle may include a nozzle body, and an agitator rotatably installed in the nozzle body. Air may follow a first flow path through the nozzle, and a second flow path which diverges from the second flow path at the agitator, so as to uniformly distribute air flow through the nozzle.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: May 7, 2013
    Assignee: LG Electronics Inc.
    Inventors: Kyeong Seon Jeong, Geun Bae Hwang, Kie Tak Hyun, Kyu Chun Choi, Chang Hwa Sun
  • UPRIGHT VACUUM CLEANER
    Publication number: 20120198652
    Abstract: Provided is an upright vacuum cleaner. The upright vacuum cleaner includes a suction nozzle comprising a plurality of wheels, a main body relatively rotatable with respect to the suction nozzle, and a steering device steering the plurality of wheels to correspond to the movement of the main body.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 9, 2012
    Inventors: Chung-Ook Chong, Kyu-Chun Choi, Geun-Bae Hwang, Chang-Hwa Sun
  • NOZZLE FOR A VACUUM CLEANER
    Publication number: 20100287725
    Abstract: A nozzle for a vacuum cleaner is provided, the nozzle having a structure in which suction performance may be improved. The nozzle may include a nozzle body, and an agitator rotatably installed in the nozzle body. Air may follow a first flow path through the nozzle, and a second flow path which diverges from the second flow path at the agitator, so as to uniformly distribute air flow through the nozzle.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 18, 2010
    Inventors: Kyeong Seon Jeong, Geun Bae Hwang, Kie Tak Hyun, Kyu Chun Choi, Chang Hwa Sun
  • VACUUM CLEANER
    Publication number: 20100132149
    Abstract: The present embodiments relate to a vacuum cleaner. The vacuum cleaner according to present embodiments includes a main body; a wheel for moving the main body; a driving unit for driving the wheel; a sensor for sensing movement of the main body; and a controller for controlling the driving unit according to data sensed by the sensor.
    Type: Application
    Filed: March 14, 2008
    Publication date: June 3, 2010
    Applicant: LG Electronics Inc.
    Inventors: Kyeong-Seon Jeong, Kyu-Chun Choi, Geun-Bae Hwang, Chang-Hwa Sun, Ju-Young Min, Chung-Ook Chong