Acoustics – Diaphragm – Mounting or suspension means
Reexamination Certificate
2005-10-25
2005-10-25
San Martin, Edgardo (Department: 2837)
Acoustics
Diaphragm
Mounting or suspension means
C181S172000, C181S173000, C381S392000, C381S429000
Reexamination Certificate
active
06957714
ABSTRACT:
The speaker has a diaphragm main body30supported resiliently on a frame23via an edge portion31around its outer circumference, and the groove ribs35integrally formed in the edge portion31, wherein a regulation member37for partially improving a flexural strength of the edge portion31is provided on a part of the front or back face of the edge portion31.
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Japanese Abstract No. 58199000, dated Nov. 19, 1983.
Japanese Abstract No. 61276499, dated Dec. 6, 1986
Ishiyama Ryo
Takahashi Osamu
Martin Edgardo San
Pioneer Corporation
Tohoku Pioneer Corporation
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