发明授权
- 专利标题: Threaded joint for tubes
- 专利标题(中): 管螺纹接头
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申请号: US636932申请日: 1996-04-24
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公开(公告)号: US5782503A公开(公告)日: 1998-07-21
- 发明人: Thierry Noel , Akira Narita
- 申请人: Thierry Noel , Akira Narita
- 申请人地址: FRX Aulnoyes-Aymeries JPX Osaka
- 专利权人: Vallourec Oil & Gas,Sumitomo Metal Industries
- 当前专利权人: Vallourec Oil & Gas,Sumitomo Metal Industries
- 当前专利权人地址: FRX Aulnoyes-Aymeries JPX Osaka
- 优先权: FRX9505371 19950428
- 主分类号: F16L9/02
- IPC分类号: F16L9/02 ; E21B17/042 ; F16L15/04 ; F16L15/06 ; F16L7/00
摘要:
The threaded joint for tubes according to the invention concerns sealed end to end connections of metal tubes useable in particular in the petroleum industry. This joint comprises a sleeve provided with two housings with tapered threads into which are screwed the male extremities of two metal tubes provided with corresponding threads having non-threaded extremity zones the front walls of which abut one against the other, a clearance existing between the lateral walls of these zones and the annular wall of he sleeve opposite. Two pairs of male/female shoulder stops prevent over-screwing. The heights of the teeth of the male and female threads are identical.
公开/授权文献
- US4636886A Rotary head recording system 公开/授权日:1987-01-13
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