发明名称 FREMGANGSMAADE TIL AT BEVIRKE AFBRYDELSE I EN MEDIUMSTROEM GENNEM EN ROERLEDNING,OG ANORDNING TIL UDOEVELSE AF FREMGANGSMAADEN
摘要 <p>A method and a device for interrupting or reducing a media flow through a tubular pipe, involving removal of two opposed circumferential wall portions of the tubular pipe by means of two mainly parallel pistons, thereafter moving a third piston mainly mutually perpendicularly to the direction of travel for the pistons parallel piston and the length axis of the tubular pipe to a position mainly extending through the parallel pistons, the tubular pipe and the opposed openings of same, the third piston means being arranged with expanding devices, which, after completed movement of the third piston, are expanded to reduce, or interrupt, the internal cross-sectional area of the tubular pipe.</p>
申请公布号 DK201678(A) 申请公布日期 1978.11.17
申请号 DK19780002016 申请日期 1978.05.09
申请人 GEBELIUS S R V 发明人 GEBELIUS S R V
分类号 F16K7/20;F16K7/00;F16K17/40;F16L55/10;F16L55/124;(IPC1-7):F16L/ 主分类号 F16K7/20
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