Patents by Inventor Kuen-Yan Chu

Kuen-Yan Chu 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).

  • Power plug with safety feature
    Patent number: 6604954
    Abstract: A power plug has a housing, a voltage prong, a neutral prong, and a ground prong, the prongs set in the housing, and a main body elastically set in the housing and encircling the prongs. When plugging the power plug into a socket, the main body retracts toward the housing. When unplugging the power plug from the socket, the main body is pushed outward to cover the prongs. In such a manner, only a small section of each prong is exposed to open air or the prongs are not exposed at all, increasing the safety of the power plug.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: August 12, 2003
    Assignee: Primax Electronics Ltd.
    Inventors: Kuen-Yan Chu, Yi-Te Ch
  • Power plug with safety feature
    Publication number: 20030077930
    Abstract: A power plug has a housing, a voltage prong, a neutral prong, and a ground prong, the prongs set in the housing, and a main body elastically set in the housing and encircling the prongs. When plugging the power plug into a socket, the main body retracts toward the housing. When unplugging the power plug from the socket, the main body is pushed outward to cover the prongs. In such a manner, only a small section of each prong is exposed to open air or the prongs are not exposed at all, increasing the safety of the power plug.
    Type: Application
    Filed: October 23, 2001
    Publication date: April 24, 2003
    Inventors: Kuen-Yan Chu, Yi-Te Chiang