Patents by Inventor Chuan-En Lee

Chuan-En Lee 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).

  • Early warning method and device for preventing wheelchair from tipping over
    Patent number: 9549861
    Abstract: An early warning method and a device for preventing a wheelchair from tipping over are described. The early warning method includes projecting a laser light pattern, scanning the laser light pattern, making a comparison to determine whether the ground is a barrier terrain, and issuing an early warning to the user in situations of risk. The laser light pattern is projected onto the ground and compared with a standard pattern. The early warning is generated and is one selected from a group consisting of a beep, a warning message and a vibration to alert the wheelchair user to the danger of the barrier terrain.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: January 24, 2017
    Assignee: NATIONAL TAIWAN UNIVERSITY
    Inventors: Shih-Chung Kang, Pei-Chun Lin, Yung-Shun Su, Ci-Jyun Liang, Pei-Yi Lee, Yao-Yu Yang, Kevin Lin, Chuan-En Lee
  • EARLY WARNING METHOD AND DEVICE FOR PREVENTING WHEELCHAIR FROM TIPPING OVER
    Publication number: 20140191489
    Abstract: An early warning method and a device for preventing a wheelchair from tipping over are described. The early warning method includes projecting a laser light pattern, scanning the laser light pattern, making a comparison to determine whether the ground is a barrier terrain, and issuing an early warning to the user in situations of risk. The laser light pattern is projected onto the ground and compared with a standard pattern. The early warning is generated and is one selected from a group consisting of a beep, a warning message and a vibration to alert the wheelchair user to the danger of the barrier terrain.
    Type: Application
    Filed: August 30, 2013
    Publication date: July 10, 2014
    Inventors: Shih-Chung Kang, Pei-Chun Lin, Yung-Shun Su, Ci-Jyun Liang, Pei-Yi Lee, Yao-Yu Yang, Kevin Lin, Chuan-En Lee