Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2005-10-18
2005-10-18
Le, Huyen (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S152000, C381S423000, C381S425000, C381S396000, C381S398000, C181S171000, C181S172000, C181S169000
Reexamination Certificate
active
06956957
ABSTRACT:
A loudspeaker drive unit comprising a resonant acoustic radiator, an exciter on the radiator to apply bending wave energy to the radiator to cause it to resonate, a support for the loudspeaker drive unit, and means resiliently coupling the exciter to the support.
REFERENCES:
patent: 3247925 (1966-04-01), Warnaka
patent: 3553392 (1971-01-01), Liebscher et al.
patent: 3772466 (1973-11-01), Hossbach
patent: 4055732 (1977-10-01), Yoshimura et al.
patent: 4323737 (1982-04-01), Shimada
patent: 4362907 (1982-12-01), Polacsek
patent: 4392027 (1983-07-01), Bock
patent: 4720868 (1988-01-01), Hirano
patent: 5894263 (1999-04-01), Shimakawa et al.
patent: 6058196 (2000-05-01), Heron
patent: 6208237 (2001-03-01), Saiki et al.
Azima et al., “Electro-Dynamic Exciter”, U.S. Appl. No. 09/355,312, filed Jan. 30, 1998 (as PCT/GB98/00307) including copy of PCT/GB98/00307, IPER and Preliminary Amendment filed with application.
Azima Henry
Bank Graham
Colloms Martin
Djahansouzi Bijan
Harris Neil
Harvey Dionne
Le Huyen
New Transducers Limited
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