Loudspeaker

Details Loudspeaker Loudspeaker

2006-04-11

2006-04-11

Pendleton, Brian T. (Department: 2644)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S190000

Reexamination Certificate

active

07027610

ABSTRACT:
A loudspeaker contains a hemispherical vibrator. The end portion of the hemispherical vibrator on the side opposite to the hemispherical curved surface is mounted on the main surface of a first circular baffle board. On the opposite side of the first baffle board from the side where the vibrator is mounted, a second baffle board is arranged so as to be approximately parallel with the first baffle board. The first baffle board and second baffle board are connected by four spacers with a space between them.

REFERENCES:
patent: 4344503 (1982-08-01), Nakamura et al.
patent: 4437541 (1984-03-01), Cross
patent: 5802196 (1998-09-01), Nakamura
patent: 6243475 (2001-06-01), Nakamura et al.
patent: 6356642 (2002-03-01), Nakamura et al.
patent: 6502662 (2003-01-01), Nakamura et al.
patent: 6590992 (2003-07-01), Nakamura
patent: 50-110647 (1974-02-01), None

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