Patents by Inventor Kam Wah Hui

Kam Wah Hui 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).

  • WHEELCHAIR
    Publication number: 20170320403
    Abstract: The present invention relates to a wheelchair, comprising a wheelchair body, a control system, two front wheels and two rear wheels mounted to the front part and rear part of the wheelchair body respectively. The wheelchair further comprises a left and right transmission gear and a front and rear transmission gear mounted to the front part and rear part of the wheelchair body and connected to the two front wheels, the two rear wheels and the control system respectively. The left and right transmission gear is used to drive the two front wheels to rotate left and right and the front and rear transmission gear is used to drive the two rear wheels to move forward and backward and assist left and right rotation. The present invention enables the wheelchair to turn left or right while moving forward or backward on two parallel lines, allowing convenience of use.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 9, 2017
    Inventor: Kam Wah Hui
  • Wheelchair
    Patent number: 9802510
    Abstract: The present invention relates to a wheelchair, comprising a wheelchair body, a control system, two front wheels and two rear wheels mounted to the front part and rear part of the wheelchair body respectively. The wheelchair further comprises a left and right transmission gear and a front and rear transmission gear mounted to the front part and rear part of the wheelchair body and connected to the two front wheels, the two rear wheels and the control system respectively. The left and right transmission gear is used to drive the two front wheels to rotate left and right and the front and rear transmission gear is used to drive the two rear wheels to move forward and backward and assist left and right rotation. The present invention enables the wheelchair to turn left or right while moving forward or backward on two parallel lines, allowing convenience of use.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: October 31, 2017
    Inventor: Kam Wah Hui