Patents by Inventor Eric Douglas Guarin

Eric Douglas Guarin 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).

  • Loudspeaker with low distortion and high output power
    Patent number: 6639993
    Abstract: A loudspeaker having an improved acoustic performance achieved by low distortion and high output power. The loudspeaker includes a speaker frame, a diaphragm connected to the speaker frame, a voice coil which is formed on a voice coil bobbin and is connected to the diaphragm for vibrating the diaphragm, a permanent magnet having a central opening, and a pole piece disposed coaxially within the central opening of the permanent magnet to form an air gap into which the voice coil is disposed. The top area of the through hole of the pole piece is curved with an S-shape in cross section and an inner diameter of the through hole is increased toward the inner top thereof.
    Type: Grant
    Filed: December 29, 2001
    Date of Patent: October 28, 2003
    Assignee: Alpine Electronics, Inc
    Inventors: Jason Kemmerer, Eric Douglas Guarin
  • Loudspeaker with low distortion and high output power
    Publication number: 20030123694
    Abstract: A loudspeaker having an improved acoustic performance achieved by low distortion and high output power. The loudspeaker includes a speaker frame, a diaphragm connected to the speaker frame, a voice coil which is formed on a voice coil bobbin and is connected to the diaphragm for vibrating the diaphragm, a permanent magnet having a central opening, and a pole piece disposed coaxially within the central opening of the permanent magnet to form an air gap into which the voice coil is disposed. The top area of the through hole of the pole piece is curved with an S-shape in cross section and an inner diameter of the through hole is increased toward the inner top thereof.
    Type: Application
    Filed: December 29, 2001
    Publication date: July 3, 2003
    Inventors: Jason Kemmerer, Eric Douglas Guarin