Acoustic transducer having reduced thickness

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic

Reexamination Certificate

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Details

C381S418000

Reexamination Certificate

active

10118791

ABSTRACT:
A transducer for a hearing aid includes a housing, a relatively thin membrane having a free end suspended in the housing for vibration in response to a motor. The motor has a coil and a magnet assembly, the coil being mounted in the housing beneath the membrane; the magnet assembly being mounted in the housing coaxially with the coil and to one edge of the membrane.

REFERENCES:
patent: 3502822 (1970-03-01), Sternfeld et al.
patent: 3742156 (1973-06-01), Broersma
patent: 3935398 (1976-01-01), Carlson et al.
patent: 4109116 (1978-08-01), Victoreen
patent: 4126769 (1978-11-01), Broersma
patent: 4904078 (1990-02-01), Gorike
patent: 5193116 (1993-03-01), Mostardo
patent: 5255246 (1993-10-01), van Halteren
patent: 5610989 (1997-03-01), Salvage et al.
patent: 5649020 (1997-07-01), McClurg et al.
patent: 5757947 (1998-05-01), Van Halteren et al.
patent: 5960093 (1999-09-01), Miller
patent: 6044162 (2000-03-01), Mead et al.
patent: 6078677 (2000-06-01), Dolleman et al.
patent: 6322374 (2001-11-01), Comtois et al.
patent: 1102517 (2000-09-01), None
patent: WO 95/07014 (1995-03-01), None
patent: WO 0027166 (2000-05-01), None
International Search Report dated Feb. 27, 2006, 5 pages.

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