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 |
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국제특허분류(IPC7판) | B08B-009/04 F16K-031/524 |
미국특허분류(USC) | 137/244 ; 15/10416 ; 137/62538 ; 137/6255 |
출원번호 | US-0487858 (1983-04-22) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 1 |
A valve assembly is disclosed which comprises a housing having at least two fluid ports which are adapted for connection to a fluid system. A piston is slidably mounted in the housing and movable between a first position in which the fluid ports are fluidly connected and a second position in which the fluid ports are fluidly disconnected. A seal is carried by the piston and engages a sealing surface in the housing when the piston is in its second position. A scraping member is also carried by the member so that the scraping member passes across and engag...
A valve assembly comprising: a housing having a first port, a second port and a third port, said second and third ports being axially aligned, said ports adapted for fluid connection to a fluid system, a piston axially slidably mounted in said housing between a first position in which said first and second fluid ports are fluidly connected and a second position in which said first and third fluid ports are fluidly connected, a first and second seal, said first seal being carried by said piston at a position spaced inwardly from a first axial end of said ...