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公开(公告)号:US07027609B2
公开(公告)日:2006-04-11
申请号:US09895197
申请日:2001-07-02
申请人: Yoshimi Kudo , Junichi Sato , Akira Otake
发明人: Yoshimi Kudo , Junichi Sato , Akira Otake
IPC分类号: H04R25/00
CPC分类号: H04R7/125
摘要: A diaphragm for a speaker comprises a metal cone 2 and a paper auxiliary cone 4 bonded integrally to the center portion of the metal cone 2.