发明名称 |
Connection for fabricating mandrel bar from used segments |
摘要 |
In the fabricating of a mandrel bar, a plurality of used mandrel bar segments are provided, each of which has a central bore comprising a smooth surface portion and a threaded portion. Each segment has a circumferential recess at an end thereof and a bevelled surface adjoining the recess and extending inwardly of the segment at an angle to the vertical. A coupling has a smooth central boss section and threaded ends. A connection is made by threadedly connecting the ends of the coupling with a pair of opposed mandrel segments, with the smooth boss of the coupling fitting inside the smooth portion of the bore of each segment to effect, with the threaded joint, a straight, tight joint. A weld groove of gull-shaped cross-section is provided between the opposed ends of a pair of mandrel segments, having a body portion formed by a pair of opposed bevelled surfaces and wings formed by a pair of opposed recesses.
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申请公布号 |
US5536050(A) |
申请公布日期 |
1996.07.16 |
申请号 |
US19950376227 |
申请日期 |
1995.01.23 |
申请人 |
USX CORPORATION |
发明人 |
MCDERMOTT, JOHN F.;ADONYI, YONI;HANN, JERRY;ALBRITTON, PAUL M.;SANDERSON, MILES G. |
分类号 |
F16L13/02;(IPC1-7):F16L13/02 |
主分类号 |
F16L13/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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