| 发明名称 |
METHOD AND APPARATUS FOR DETERMINING PATH ORIENTATION OF A PASSAGEWAY |
| 摘要 |
A method and apparatus are disclosed for determining the position of a centerline of a passageway by using a measuring instrument which passes through the passageway taking periodic and successive axial strain measurements which are in turn used to form an interconnected series of circular arc segments representing the centerline.
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| 申请公布号 |
US5193628(A) |
申请公布日期 |
1993.03.16 |
| 申请号 |
US19910709293 |
申请日期 |
1991.06.03 |
| 申请人 |
UTD INCORPORATED |
发明人 |
HILL, III, JOHN L.;FOSTER, EUGENE L.;HUTZEL, WILLIAM J. |
| 分类号 |
E21B7/04;E21B47/00;E21B47/022;E21B47/12;G01B21/20 |
主分类号 |
E21B7/04 |
| 代理机构 |
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