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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0789715 (1977-04-21) |
우선권정보 | FR-0012749 (1976-04-29) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 18 인용 특허 : 0 |
A chamber formed at the lower end of a jack piston is made pressure-tight by means of a seal between the lateral walls of the piston and the jack cylinder and contains a gunpowder cartridge for actuating the jack. Two members located on each side of the pipe to be obturated by compression are intend
An explosive-forming device for the obturation of a pipe, wherein said device comprises: a jack constituted by a piston and a cylinder, said piston being provided at the lower end thereof with a chamber which delimits a compartment with the bottom wall of said jack cylinder, said compartment being m
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