최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0081260 (1993-06-21) |
우선권정보 | CH-0003235 (1991-11-06) |
국제출원번호 | PCT/CH92/00223 (1992-11-05) |
§371/§102 date | 19930621 (19930621) |
국제공개번호 | WO-9309305 |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 0 |
A sewer pipe to be replaced is worked, starting from a manhole, by a cutter head which is braced at a front end of a new pipe to be force in from the manhole. The cutter head is guided in the pipe to be worked during the cutting operation. Such guidance is accomplished by a guide mechanism, which is
In a process of replacing an enclosed old pipe with a new pipe, said process including advancing a cutter head along said old pipe and operating said cutter head to cut away and thereby remove said old pipe, and supplying said new pipe behind said advancing cutter head, the improvement comprising: c
※ AI-Helper는 부적절한 답변을 할 수 있습니다.