发明授权
- 专利标题: Diaphragm for speaker
- 专利标题(中): 扬声器隔膜
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申请号: US844904申请日: 1977-10-25
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公开(公告)号: US4129195A公开(公告)日: 1978-12-12
- 发明人: Yasuhiro Ishii , Shintaro Hirose , Ryoichi Kawasaki
- 申请人: Yasuhiro Ishii , Shintaro Hirose , Ryoichi Kawasaki
- 申请人地址: JPX Moriguchi JPX Gunma
- 专利权人: Sanyo Electric Co., Ltd.,Tokyo Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.,Tokyo Sanyo Electric Co., Ltd.
- 当前专利权人地址: JPX Moriguchi JPX Gunma
- 优先权: JPX50-155394 19751224
- 主分类号: H04R7/02
- IPC分类号: H04R7/02 ; H04R7/12 ; B32B3/10 ; G10K13/00
摘要:
A diaphragm for a dynamic cone speaker which is composed of a porous metal produced from a metal such as nickel, wherein a layer, such as of aluminum foil, is disposed on a surface of the porous metal to eliminate the gas permeability of the porous metal.
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