Wide dispersion speaker system and cover mounting structure...

Details Wide dispersion speaker system and cover mounting structure... Wide dispersion speaker system and cover mounting structure...

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.

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