公开(公告)号：US3509290A

公开(公告)日：1970-04-28

申请号：US3509290D

申请日：1966-11-22

Applicant: NIPPON MUSICAL INSTRUMENTS MFG

Inventor： MOCHIDA YASUNORI ,  KUROKAWA IKUJI ,  ISHIMURA KAZUKIYO

IPC: H04R7/06 ,  H04R9/04

CPC classification number: H04R7/06

公开(公告)号：US3570626A

公开(公告)日：1971-03-16

申请号：US3570626D

申请日：1969-11-18

Applicant: NIPPON MUSICAL INSTRUMENTS MFG

Inventor： MOCHIDA YASUNORI ,  KUROKAWA IKUJI ,  ISHIMURA KAZUKIYO

IPC: H04R7/04 ,  G10K13/00 ,  H04R7/00

CPC classification number: H04R7/04

Abstract: A vibrating diaphragm having a planar shape which is an asymmetric geometric figure, the concept being improved by modifying the contour configuration of the vibrating diaphragm, for example by forming the contour of said diaphragm so that the opposite sides are not parallel or said contour has an irregular curvature.

公开(公告)号：US3464514A

公开(公告)日：1969-09-02

申请号：US3464514D

申请日：1967-09-25

Applicant: NIPPON MUSICAL INSTRUMENTS MFG

Inventor： MOCHIDA YASUNORI ,  KUROKAWA IKUJI ,  ISHIMURA KAZUKIYO ,  SOTOME HIROMI

IPC: H04R7/04 ,  H04R7/06 ,  H04R7/12 ,  G10K13/00 ,  H04R7/16

CPC classification number: H04R7/04 ,  H04R7/06 ,  H04R7/12