| Original document(26 pages) 中文版 |
A device for transporting particles containing a magnetic material in a selected direction, comprising: a magnet (7) arranged to generate a magnetic field for retaining the particles on a support surface (15) whereby the magnetic field on the support surface comprises a high-field band, a low-field band, and a magnetic field gradient between said high- and low-field bands; means for advancing the high- and low-field bands relative to the support surface (15) in a direction having a component in the direction of said magnetic field gradient, whereby the high-field band is followed by the low-field band; whereby along said high-field band at least a first magnetic pole and a second magnetic pole of opposite polarity are arranged such that a first magnetic path on the support surface from the first magnetic pole to the second magnetic pole is shorter than a second magnetic path on the support surface crossing the gradient zone from the first magnetic pole to any other nearest magnetic pole of opposite polarity. |
Application Number
申请号 |
200480019536 |
Application Date
申请日 |
2004.07.08 |
| Title 名称 |
Device for transporting particles of a magnetic material and tool comprising such a device
|
Publication Number
公开号 |
1833089 |
Publication Date
公开日 |
2006.09.13 |
| Approval Pub. Date |
|
Granted Pub. Date |
|
| International Classification 分类号 |
E21B7/18,B65G54/02,B03C1/12,E21B21/00 |
Applicant(s) Name
申请人 |
Shell Int Research |
| Address 地址 |
|
| Inventor(s) Name 发明人 |
|
| Attorney & Agent 代理人 |
kou yangjie |
|
|