发明名称 THREADED PIPE CONNECTION
摘要 A long felt need for more reliable and safer pipe threads is provided which teaches (1) how to offset the mismatch of pipe threads that occurs due to elongation of the pin and contraction of the box during assembly; (2) how to prevent separation of mating pipe threads independent of radial thread interference; (3) a swaged box connection that is as strong as the pipe; (4) a thread that stabs easily without damage.
申请公布号 WO2007089427(A3) 申请公布日期 2008.07.31
申请号 WO2007US01154 申请日期 2007.01.17
申请人 RAMOS, BEVERLY, WATTS;WATTS, JOHN, D. 发明人 WATTS, JOHN, D.
分类号 F16L25/00 主分类号 F16L25/00
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