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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0530224 (1990-05-30) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 12 인용 특허 : 4 |
A method and apparatus for internally inspecting a relatively small diameter live pipeline with a camera introduced into an elongated hole cut into the wall of the pipeline at a strategic location. A housing formed by a pair of opposed oblique nipples is secured to the pipe and a rotary cutter is op
Apparatus for inspecting a pipeline in service comprising a housing adapted to be fixed on the exterior of the pipeline to isolate a portion of its wall from the environment, means for rotary cutting receivable in the housing, means on the housing for supporting said rotary cutting means for rotatio
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