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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||138/90 ; 138/98|
|발명자 / 주소|
|인용정보||피인용 횟수 : 1 인용 특허 : 0|
The invention relates to a plug devices for sealing an open end of a pipe which is being tested for structural integrity. The plug assembly has a reduced diameter first portion which is adapted for engagement with the interior of the pipe and a second, enlarged diameter portion which houses a piston that slidably moves within the central opening of the second portion. A compressible flexible packer element mounted on the first portion is compressed by the piston of the second portion to facilitate fluid-tight engagement with the interior of the pipe. The...
A plug assembly for sealing an open end of a pipe, the plug assembly comprising: a first portion adapted for sealing engagement with an interior of the pipe, said first portion comprising a compressible means for facilitating creation of a fluid-tight seal, an elongated tubular mandrel having central opening extending through its entire length, said mandrel carrying a nose portion on its proximal end and a piston means on its distal end, said compressible means being positioned in a surrounding relationship over a part of said mandrel between said nose p...