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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0886153 (1992-05-21) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 22 인용 특허 : 0 |
A conduit is shut off by a shut-off valve mechanism which is attached to an external periphery of an exposed region of the conduit. That region is exposed by excavation from the ground surface. A drill mounted on the fixture is actuated to cut out a section of the conduit. A sealing shoe mechanism c
Apparatus for shutting off a fluid pipe, comprising: a fixture configured to be positioned around the exterior of the fluid pipe at a location intermediate the pipe ends, and pipe shut-off means carried by said fixture and including: pipe cutting means mounted in said fixture for movement in a direc
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