검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | A62B-035/00 |
미국특허분류(USC) | 182/3 ; 248/2314 ; 269/228 |
출원번호 | US-0539580 (1990-06-18) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 22 인용 특허 : 0 |
First and second elongated members are slidable along each other to form a beam of variable length to span the top surface of a structure on which a worker is positioned. Clamping surfaces extend from the ends of the beam to engage the sides of the structure. A lever pivotally mounted on the first elongated member is connected through a link to the second elongated member to shorten the beam and urge the clamping surfaces against the structure. A worker\s safety line may be attached to the device such that the lever is locked relative to the first elonga...
A mounting device for securing a safety line to a structure on which a worker is positioned, comprising: a first elongated member; a second elongated member, substantially coaxial with the first elongated member, having a side portion thereof slidably movable along a side portion of the first elongated member such that the elongated members together span the structure on which the worker is positioned; clamping means mounted on the distal ends of the first and second elongated members adapted for engaging the structure; a lever pivotally mounted on the f...