Patents by Inventor Cheng-Yuan Sun

Cheng-Yuan Sun 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).

  • FULL-RANGE SPEAKER DEVICE
    Publication number: 20080101647
    Abstract: A full-range speaker device is provided herein that can deliver high-fidelity trebles. The major feature of the present invention lies in that the voice coil is sandwiched between two or more concentric bobbins. As such, out of the same back-and-forth movement of the bobbins, different ranges of sounds are produced through separate bobbins by the diaphragms attached to the bobbins, respectively.
    Type: Application
    Filed: October 19, 2006
    Publication date: May 1, 2008
    Inventor: Cheng-Yuan SUN
  • Cone of a speaker
    Patent number: 5689093
    Abstract: The cone of a speaker which has fibers perpendicularly fastened thereto by an electrostatic fiber implanting apparatus to eliminate the reflection of transverse waves between the diaphragm and the peripheral flange of the cone.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: November 18, 1997
    Inventor: Cheng-Yuan Sun