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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0871093 (1978-01-20) |
우선권정보 | JP-0009028 (1977-01-29); JP-0039793 (1977-04-07); JP-0089654 (1977-07-06) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 22 인용 특허 : 3 |
A building machine wherein a leader is supported vertically during an operation, an endless chain is engaged around upper and lower sprockets of said leader, and a base body is mounted on said chain and is forced to move vertically along said leader. A pile which is a member to be driven in, is moun
A building machine for driving vertical members, comprising, a leader which is supported vertically during a driving operation, upper and lower sprockets mounted rotatably at upper and lower positions respectively of said leader, an endless chain which is engaged around the upper and lower sprockets
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