Loudspeaker diaphragm
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专利名称：Loudspeaker diaphragm
发明人：Shinjo, Yasuhiro
申请号：EP89301664.2
申请日：19890221
公开号：EP0330423A2
公开日：
19890830
专利内容由知识产权出版社提供
专利附图：
摘要：A loudspeaker has a diaphragm 2 made of elastic material for example rubber.The diaphragm is under permanent tension by virtue of the manner in which it is mounted on a peripheral frame 2 and/or by the action of a spring 5′ pulling the diaphragm centre backwards or pushing it forwards. The diaphragm is excited at its centre e.g. by a voice
coil 3′. Vibrations applied to the centre of the diaphragm decrease in amplitude with radius and have zero amplitude at the periphery of the diaphragm. As a result, destructive interference between the air in front of and behind the diaphragm is reduced or eleminated and good-quality reproduction of a range of frequencies is possible without an enclosure.
申请人：Shinjo, Yasuhiro
地址：Shimashidanchi 4-102, 2, 654-banchi Aza-shimashi Ginowan-shi Okinawa-ken, 901-22 JP
国籍：JP
代理机构：Clifford, Frederick Alan
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