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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0970283 (1978-12-18) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 24 인용 특허 : 0 |
A method of joining tubular elements to provide fluid tight connections is disclosed in which the mating portions of the joined tubes are preformed so as to be able to be located with respect to each other prior to soldering, brazing, or other joining process. The preforming operations involve the p
A method of forming a tube joint between a circular-in-section body tube and a transversely intersecting branch tube, comprising the steps of: (A) forming an opening in the side wall of said body tube, said forming step being performed by the substeps of- (1) punching said opening along a line of ac
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