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1. 发明授权

EP0359833B1 SEALING MEMBER FOR SEALING MAGNETIC FLUID AND METHOD OF PRODUCING SAME 失效
标题翻译：密封件密封磁流体其生产。
公开(公告)号：EP0359833B1
公开(公告)日：1994-03-16
申请号：EP89904232.9
申请日：1989-03-31
申请人： NIPPON FERROFLUIDICS CORPORATION
发明人： ISHIKAWA, Ryuhei Nippon Ferrofluidics Corporation
IPC分类号： F16J15/40
CPC分类号： F16J15/43
摘要： The present invention relates to an annular sealing member (7) arranged so as to surround the periphery of a working member such as a shaft (10). This sealing member (7), is produced by sticking a sheet (1) of elastic magnet to pole piece-constructing sheets (2, 2) and punching the resulting assembly. The annular portion of said sheet (1) of elastic magnet is pressed to be contracted in the direction of thickness and stretched in the radial direction by said punching. As a result, the circumferential portion of the above described annular magnet (8) is dislocated so as to be sunk from the periphery of said annular pole pieces (9, 9). Accordingly, the dimensional accuracy of inner and outer circumferences of the sealing member (7) is improved.

2. 发明授权

EP0364604B1 SEALING MEMBER FOR SEALING MAGNETIC FLUID 失效
标题翻译：密封件密封磁流体。
公开(公告)号：EP0364604B1
公开(公告)日：1994-02-16
申请号：EP89904231.1
申请日：1989-03-31
申请人： NIPPON FERROFLUIDICS CORPORATION
发明人： ISHIKAWA, Ryuhei Nippon Ferrofluidics Corporation
IPC分类号： F16J15/40
CPC分类号： F16J15/43 , Y10S277/919
摘要： A sealing member for sealing magnetic fields according to the present invention is a sealing member (1) arranged so as to surround a periphery of a working member (5) such as shaft. The sealing member (1) comprises an annular magnet (2) and an annular pole piece (3), an electrically conductive magnetic fluid (6) being provided between the sealing member (1) and the working member (5) to construct an electrically conductive magnetic fluid-sealing member. And, an inner circumferential surface of the annular magnet (2) is coated with an electrically conductive non magnetic film (4) continuing to the annular pole piece (3) to down-size the sealing member (1) and reduce an electrical resistance.

3. 发明公开

EP0364604A1 SEALING MEMBER FOR SEALING MAGNETIC FLUID 失效
标题翻译： DICHTUNGSGLIED ZUR DICHTUNG VON MAGNECHENCHEN FLUIDEN。
公开(公告)号：EP0364604A1
公开(公告)日：1990-04-25
申请号：EP89904231.1
申请日：1989-03-31
申请人： NIPPON FERROFLUIDICS CORPORATION
发明人： ISHIKAWA, Ryuhei Nippon Ferrofluidics Corporation
IPC分类号： F16J15/40
CPC分类号： F16J15/43 , Y10S277/919
摘要： A sealing member for sealing magnetic fields according to the present invention is a sealing member (1) arranged so as to surround a periphery of a working member (5) such as shaft. The sealing member (1) comprises an annular magnet (2) and an annular pole piece (3), an electrically conductive magnetic fluid (6) being provided between the sealing member (1) and the working member (5) to construct an electrically conductive magnetic fluid- seating member. And, an inner circumferential surface of the annular magnet (2) is coated with an electrically conductive non magnetic film (4) continuing to the annular pole piece (3) to down-size the sealing member (1) and reduce an electrical resistance.
摘要翻译：根据本发明的用于密封磁场的密封构件是以围绕诸如轴的工作构件（5）的周边布置的密封构件（1）。密封构件（1）包括环形磁体（2）和环形极片（3），导电磁性流体（6）设置在密封构件（1）和工作构件（5）之间以构成电气导电磁流体密封构件。并且，环形磁体（2）的内圆周表面涂覆有连续到环形极片（3）的导电非磁性膜（4），以使密封构件（1）缩小，并降低电阻。

4. 发明公开

EP0359833A1 SEALING MEMBER FOR SEALING MAGNETIC FLUID AND METHOD OF PRODUCING SAME 失效
标题翻译： DICHTUNGSGLIED ZUR DICHTUNG VON MAGNETISCHEN FLUIDEN UND DESSEN HERSTELLUNG。
公开(公告)号：EP0359833A1
公开(公告)日：1990-03-28
申请号：EP89904232.9
申请日：1989-03-31
申请人： NIPPON FERROFLUIDICS CORPORATION
发明人： ISHIKAWA, Ryuhei Nippon Ferrofluidics Corporation
IPC分类号： F16J15/40
CPC分类号： F16J15/43
摘要： The present invention relates to an annular sealing member (7) arranged so as to surround the periphery of a working member such as a shaft (10). This sealing member (7), is produced by sticking a sheet (1) of elastic magnet to pole piece- constructing sheets (2,2) and punching the resulting assembly. The annular portion of said sheet (1) of elastic magnet is pressed to be contracted in the direction of thickness and stretched in the radial direction by said punching. As a result, the circumferential portion of the above described annular magnet (8) is dislocated so as to be sunk from the periphery of said annular pole pieces (9, 9). Accordingly, the dimensional accuracy of inner and outer circumferences of the sealing member (7) is improved.
摘要翻译：环形密封件（7）本发明涉及一种围绕诸如轴（10）的工作构件周边布置的环形密封件（7）。该密封构件（7）通过将弹性磁体的片材（1）粘贴到极片构造片材（2,2）上并冲压所得到的组件来制造。所述弹性磁体片（1）的环形部分被压制成沿厚度方向收缩，并通过所述冲压在径向方向上拉伸。结果，上述环形磁体（8）的圆周部分被脱位，以便从所述环形极片（9,9）的周边凹陷。因此，密封构件（7）的内周和外周的尺寸精度提高。

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