Stylus assembly and transducer using same

Details Stylus assembly and transducer using same Stylus assembly and transducer using same

1974-10-23

1976-09-28

Cardillo, Jr., Raymond F.

H04R 1112

Patent

active

039833356

ABSTRACT:
A stylus assembly for an electromechanical vibration transducer comprises a single magnet armature lying in a first imaginary vertical plane which passes through the fulcrum of a cantilever arm and is perpendicular to a second imaginary vertical plane in which the axis of the arm lies, the armature further lying in a first imaginary horizontal plane which is parallel to a second imaginary horizontal plane in which lies a line joining the fulcrum and the center of a stylus tip, the lines joining each end of the armature and fulcrum coinciding with the axes of modulation of a sound groove. An electromechanical vibration transducer incorporating such a stylus assembly comprises pairs of pole pieces each pair defining a gap, each end of the armature being disposed within the gap formed between the respective pair of pole pieces each pair of pole pieces is associated with a magnetic core about which a coil is wound.

REFERENCES:
patent: 3077521 (1963-02-01), Ahrens et al.
patent: 3184555 (1965-05-01), Marshall
patent: 3542972 (1970-11-01), Braun
patent: 3720796 (1973-03-01), Honma
patent: 3761647 (1973-09-01), Nemoto et al.
patent: 3763335 (1973-10-01), Morita
Moving-Magnetic Stereo by H. Horowitz, Audio, May 1959 pp. 19-21, 46-47.

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