发明授权
- 专利标题： Pole piece for use in magnet device and method for manufacturing same
- 专利标题（中）： 用于磁体装置的极片及其制造方法
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申请号： US556887申请日： 1975-03-10
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公开(公告)号： US4042898A公开(公告)日： 1977-08-16
- 发明人: Sadami Tomita , Akio Chiba
- 申请人： Sadami Tomita , Akio Chiba
- 申请人地址： JA
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JA
- 优先权： JA49-28071 19740313
- 主分类号： G01R33/383
- IPC分类号： G01R33/383 ; A61B5/055 ; B21J5/02 ; H01F3/00 ; H01F7/02 ; H01F41/02
摘要：
A pole piece for use in a magnet device and a method for manufacturing same, in which the structure of the pole piece for use in a magnet device used in an analyzing apparatus for analyzing such as nuclear magnetic resonance is varied in concentric fashion from the center towards the outer circumference of the pole piece. The pole piece is manufactured according to the die-forging, whereby the magnetic properties of the pole piece become hetrogenous in concentric fashion. The use of such a pole piece brings about a magnet device which is compact in size and which provides a strong and uniform magnetic field.
公开/授权文献
- US5081928A Multiple ink roll system for flexographic printing stations 公开/授权日：1992-01-21
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