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-005/04 |
미국특허분류(USC) | 251/314 ; 251/309 ; 251/DIG ; 1 ; 251/209 |
출원번호 | US-0603282 (1975-08-11) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 12 인용 특허 : 0 |
A rotary plug valve having a plug member rotatable in a valve housing between an opened position and a closed position, the housing member having a valve seat therein with a first passage opening to the seat and a second passage opening to the seat, and sealing means such as an endless sealing ring and an endless groove encircling one of the openings of the first and second passages to the seat. The rotary plug valve is capable of two-way flow therethrough, and this is realized by providing the passage in the plug member which has the sealing means encir...
A rotary plug valve capable of having fluid flow therethrough in either direction, said plug valve comprising: a housing member having a valve seat therein, a first passage having a port opening to said valve seat and a second passage having a port opening to said valve seat; a plug member having a flow passgeway therethrough with ports at its ends, said plug member being rotatable on an axis in said valve seat between a fully opened position wherein the ports of the flow passageway therethrough axially align respectively with said port openings of said ...