发明名称 Well ring arrangement for a well cover of the like
摘要 The invention relates to arrangements for fixing a pipe element (12) to a well ring (10), having a shank portion (18) with cavities (24) in which lock elements (26) are mounted in such a manner that they can be forced in against the cavities (24) by the pipe (12) so that the lock elements (26) permit insertion or pushing on of the end portion of the pipe past the lock elements but prevents removal of the pipe element. The shank portion and the cavities can be made for external pushing on of the pipe or internal insertion of the same. <IMAGE>
申请公布号 EP0859088(A1) 申请公布日期 1998.08.19
申请号 EP19980850016 申请日期 1998.02.05
申请人 GUSTAVSBERG ROERSYSTEM AB 发明人 ROED, OLAV
分类号 E02D29/14 主分类号 E02D29/14
代理机构 代理人
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