×

Magnetic core for speaker

  • US 6,681,027 B1
  • Filed: 08/16/2002
  • Issued: 01/20/2004
  • Est. Priority Date: 07/12/2002
  • Status: Active Grant
First Claim
Patent Images

1. A magnetic core for a speaker comprising:

  • a) an annular magnet;

    b) a center magnet concentrically positioned in a center of the annular magnet;

    c) an annular magnetically conducting plate connected to a top of the annular magnet; and

    d) a center magnetically conducting plate connected to a top of the center magnet, the center magnetically conducting plate and center magnet having equal outer diameters, wherein an outer diameter and an inner diameter of the annular magnetically conducting plate are respectively smaller than an outer diameter and an inner diameter of the annular magnet so that the annular magnetically conducting plate is closer to the center magnet than the annular magnet so as to produce a magnetic loop with the center magnetically conducting plate.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×