发明授权
- 专利标题： Magnetic recording disc cartridge
- 专利标题（中）： 磁记录盘盒
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申请号： US465251申请日： 1983-02-09
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公开(公告)号： US4583144A公开(公告)日： 1986-04-15
- 发明人: Yoshitake Kato
- 申请人： Yoshitake Kato
- 申请人地址： JPX Osaka
- 专利权人： Hitachi Maxell, Ltd.
- 当前专利权人： Hitachi Maxell, Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX57-17364 19820210; JPX57-17365 19820210; JPX57-17366 19820210; JPX57-17367 19820210; JPX57-17369 19820210; JPX57-17370 19820210; JPX57-34640 19820313; JPX57-52474 19820410
- 主分类号： G11B17/03
- IPC分类号： G11B17/03 ; G11B23/00 ; G11B23/033 ; G11B23/03
摘要：
In a magnetic recording disc cartridge, a hub assembly composed of an upper hub member and a lower hub member inseparably connected with each other clamps the peripheral portion of a central hole defined in a magnetic recording sheet between inner stepped portions of surfaces of the hub members with a portion of the magnetic recording sheet opposed to outer portions of the hub members remaining unclamped.
公开/授权文献
- US5118220A Method of building underground cavern and tunneling machine 公开/授权日：1992-06-02
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