Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Reexamination Certificate
2007-11-27
2010-11-23
Le, Huyen D (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Mounting or support feature of housed loudspeaker
C381S391000, C381S189000
Reexamination Certificate
active
07840024
ABSTRACT:
A wide dispersion speaker system1comprises a cone type speaker unit2, and a restricting element10A. The restricting element10A is provided with a center hole11at a center section thereof, and a peripheral hole12located outward relative to the center hole11. The restricting element10A has an annular sound travel inhibiting portion19positioned radially outward relative to the center hole11and radially inward relative to the peripheral hole12. An outer end in a radial direction of the sound travel inhibiting portion19is positioned at a substantially middle point between an outer end in the radial direction of the center hole11and an outer end in the radial direction of the peripheral hole12or positioned radially outward relative to the substantially middle point.
REFERENCES:
patent: 3909530 (1975-09-01), Gosswiller
patent: 3995125 (1976-11-01), Cypser
patent: 4196791 (1980-04-01), Gottlieb
patent: 4853966 (1989-08-01), Skrzycki
patent: 51-049022 (1976-04-01), None
patent: 5149022 (1993-06-01), None
patent: 2001-216830 (2001-08-01), None
International Search Report for International Application No. PCT/JP03/14779, dated Dec. 22, 2003.
Iwayama Ken
Nishino Takashi
Le Huyen D
Marshall & Gerstein & Borun LLP
TOA Corporation
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