Title: Electroacoustic transducers

Abstract: An electroacoustic transducer includes a permanent annular magnet with a central aperture, with front and back multisided flux plates attached to the annular magnet to complete a magnetic circuit which drives a voice coil and operatively drives a diaphragm. The edges of the front and back multisided fluxed plates defined a surface area of approximately 77 percent of the area bounded by the outer diameter of annular magnet.

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Inventors: Carbonneau, Gordon S. (Grand Rapids, MI, US)

Application Number: 666191
Filing Date: 1976-03-12
Publication_date: 1977-07-12
Assignee: Carbonneau Industries, Inc. (Grand Rapids, MI)
Primary Class(es): 381/414 335/231
Other Classes:
US Patent Ref:
Other Refs: 106,1581,468,916386,732

Jan, 1963	CS
Jan, 1967	FR
Jan, 1933	UK

Primary Examiner: Stellar, George G.
Assistant Examiner:
Attorney: McGarry & Waters