Patents by Inventor Wai Kuen CHANG

Wai Kuen CHANG 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).

  • Lighting fixture with replaceable light source
    Patent number: 8552630
    Abstract: A LED illuminator includes positive and negative electrodes of different configurations and a LED lamp with a plurality of the LED illuminators. The LED lamp includes two or more elastic jacks, in each of which a positive electrode or a negative electrode is arranged. The elastic jack has a positive connection point and a negative connection point respectively corresponding to distal and proximal ends of the positive electrode or the negative electrode inserted therein so that the LED lamp is in electrical connection with a power supply unit. In addition, the LED illuminators may be in parallel connection. Accordingly, a slight touch of the LED illuminator allows the illuminator to be inserted into or removed from the respective elastic jack when replacing the LED illuminators of the lamp.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: October 8, 2013
    Assignee: Seitech Electronics Limited
    Inventors: Wai Cheong Lo, Wai Kuen Chang
  • Lighting fixture with replaceable light source
    Publication number: 20120262089
    Abstract: A LED illuminator includes positive and negative electrodes of different configurations and a LED lamp with a plurality of the LED illuminators. The LED lamp includes two or more elastic jacks, in each of which a positive electrode or a negative electrode is arranged. The elastic jack has a positive connection point and a negative connection point respectively corresponding to distal and proximal ends of the positive electrode or the negative electrode inserted therein so that the LED lamp is in electrical connection with a power supply unit. In addition, the LED illuminators may be in parallel connection. Accordingly, a slight touch of the LED illuminator allows the illuminator to be inserted into or removed from the respective elastic jack when replacing the LED illuminators of the lamp.
    Type: Application
    Filed: September 5, 2011
    Publication date: October 18, 2012
    Inventors: Wai Cheong LO, Wai Kuen CHANG