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) | F16K-001/226 |
미국특허분류(USC) | 251/306 ; 251/327 ; 251/328 ; 251/362 |
출원번호 | US-0468995 (1983-02-23) |
우선권정보 | DE-3208906 (1982-03-12) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 7 인용 특허 : 5 |
A shut-off valve, particularly for use in a pipeline for conveying gases, includes a valve casing, a valve member mounted for movement between a valve open position and a valve closed position, and a casing seal mounted on at least one of the valve casing and the valve member for forming a seal with a sealing surface at least when the valve member is in the valve closed position. The casing seal includes a frame member having two legs extending in a direction toward the position of the sealing surface when the seal is formed. The two legs are spaced and ...
A polygonal shut-off valve, particularly for use in a pipeline for conveying cases, and comprising: a valve casing; a valve member mounted for movement between a valve open position and a valve closed position; seal means, mounted on at least one of said valve casing and said valve member, for forming a seal with a sealing surface at least when said valve member is in said valve closed position; said seal means including a polygonal frame member formed by plural straight sections each having two legs extending in a direction toward the position of said s...