Diaphragm and speaker using same

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic

Reexamination Certificate

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Reexamination Certificate

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08068634

ABSTRACT:
A first enforcing rib, a second enforcing rib, and a third enforcing rib are integrally formed at least at one of a front side and a back side of a diaphragm, the first enforcing rib being formed as an aggregate of a plurality of hexagons, enhancing strength and achieving light weight of a speaker using the diaphragm, preventing a difficulty of the speaker in emitting an audio sound.

REFERENCES:
patent: 4472604 (1984-09-01), Nakamura et al.
patent: 4817165 (1989-03-01), Amalaha
patent: 2001/0053230 (2001-12-01), Azima et al.
patent: 53888 (1920-10-01), None
patent: 33-9406 (1958-07-01), None
patent: 50-089330 (1975-07-01), None
patent: 56-85489 (1981-07-01), None
patent: 56-085489 (1981-08-01), None
patent: 61-245798 (1986-11-01), None
patent: 63-158088 (1988-10-01), None
patent: 63-158088 (1988-10-01), None
patent: 2001-513967 (2001-09-01), None
patent: 2006-042151 (2010-11-01), None
patent: WO 98/39947 (1998-09-01), None
International Search Report for PCT/JP2007/053015, dated Jun. 5, 2007.

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