Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent
1995-12-29
1998-03-31
Tran, Sinh
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
381199, 381204, H04R 2500
Patent
active
057347344
ABSTRACT:
A voice coil adaptor ring and loudspeaker system of the moving coil type including a cone diaphragm supported by a frame, a voice coil former for supporting a voice coil, and a lower suspension for securing and centering the voice coil former in a magnetic gap while it is displaced by a magnetic circuit. The voice coil adaptor ring is mounted over the voice coil former and comprises a substantially cylindrical sleeve having a ledge extending outward from said sleeve for supporting the cone and lower suspension; an inner glue flange projecting inward from the sleeve so as to define a diameter corresponding to an outer diameter of the voice coil former whereby the sleeve, inner glue flange and voice coil former define a gap for receiving epoxies; and a plurality of venting passages in fluid communication with a cap volume defined by the cone and dust cap for venting hot air from the cap volume.
REFERENCES:
patent: 4118605 (1978-10-01), Kobayashi
patent: 4680800 (1987-07-01), Bank et al.
patent: 4764968 (1988-08-01), Kreitmeier
patent: 5111510 (1992-05-01), Mitobe
patent: 5323469 (1994-06-01), Scholz
patent: 5371805 (1994-12-01), Saiki
patent: 5424496 (1995-06-01), Kreitmeier
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