Line radiator ribbon loudspeaker
Patent 4319096 Issued on March 9, 1982. Estimated Expiration Date: 
March 13, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 13, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1557356 3027541 Ribbon type loudspeaker Ribbon loudspeaker Ribbon loudspeaker Impact printer magnet assembly Open-circuit magnet structure for cross-field tubes and the like Patent #: 4187444 InventorApplicationNo. 06/130209 filed on 03/13/1980US Classes:381/431, Flat381/417Armature diaphragmExaminersPrimary: Stellar, George G.International ClassesH04R 9/00 (20060101)H04R 9/04 (20060101) AbstractAn audio frequency transducer having a ribbon tweeter with a multiplicity of side-by-side elongate strip-like magnets with elongate spaces therebetween, the confronting sides of the magnets having pole faces of opposite polarity to create intense magnetic fields therebetween, signal-carrying ribbon-like conductors in the intense magnetic field between adjacent magnets vibrating to produce sound output. | |
