Patents by Inventor Ping-Feng Yang

Ping-Feng Yang 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).

  • Magnet-sensible triggering doorbell mechanism
    Patent number: 6549109
    Abstract: A doorbell mechanism includes a triggering board and a main body of a conventional doorbell. The triggering board has a magnet-sensible device and a decorative doorknocker. The magnet-sensible device and the decorative doorknocker are respectively provided with a magnet, and the doorbell can be switched on or off by means of the interaction of the magnetic fields of the magnet-sensible device and the decorative doorknocker. The decorative doorknocker can be provided with an elongate pulling piece convenient for a short person or a kid to use.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: April 15, 2003
    Inventor: Ping-Feng Yang
  • MAGNET-SENSIBLE TRIGGERING DOORBELL MECHANISM
    Publication number: 20030058071
    Abstract: A doorbell mechanism includes a triggering board and a main body of a conventional doorbell. The triggering board has a magnet-sensible device and a decorative doorknocker. The magnet-sensible device and the decorative doorknocker are respectively provided with a magnet, and the doorbell can be switched on or off by means of the interaction of the magnetic fields of the magnet-sensible device and the decorative doorknocker. The decorative doorknocker can be provided with an elongate pulling piece convenient for a short person or a kid to use.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 27, 2003
    Inventor: Ping-Feng Yang