Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2011-05-10
2011-05-10
Le, Lana N (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S338000, C381S408000
Reexamination Certificate
active
07940952
ABSTRACT:
An electro-acoustic transducer includes a generally V-shaped diaphragm comprising a folded sheet of film material. The diaphragm also comprises two upper ends, a lower end, an inner surface, and an outer surface. A frame supports the diaphragm in at least the two upper ends of the diaphragm and a structured conductive layer is arranged on a surface of the diaphragm. Permanent magnets are attached to the frame adjacent to the upper two ends and the lower end of the diaphragm.
REFERENCES:
patent: 3674946 (1972-07-01), Winey
patent: 3832499 (1974-08-01), Heil
patent: 3873784 (1975-03-01), Doschek
patent: 3939312 (1976-02-01), McKay
patent: 4484037 (1984-11-01), Nieuwendijk
patent: 4924504 (1990-05-01), Burton
patent: 6008714 (1999-12-01), Okuda et al.
patent: 2001/0048256 (2001-12-01), Miyazaki et al.
patent: 2004/0170269 (2004-09-01), Madoch et al.
patent: 2005/0175208 (2005-08-01), Shaw et al.
patent: 1226647 (1966-10-01), None
patent: 2259815 (1973-06-01), None
patent: 3740918 (1988-06-01), None
patent: 2162380 (1972-11-01), None
patent: 2147768 (1985-05-01), None
patent: 55001737 (1980-01-01), None
patent: 55068798 (1980-05-01), None
patent: 55068798 (1980-05-01), None
patent: 55147899 (1980-11-01), None
patent: 57054499 (1982-03-01), None
patent: 58119296 (1983-07-01), None
patent: 03262300 (1991-11-01), None
Eason Matthew
Harman / Becker Automotive Systems GmbH
Le Lana N
O'Shea Getz P.C.
LandOfFree
Electro-acoustic transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-acoustic transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-acoustic transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2669623