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) | F16L-025/00 F16L-019/00 |
미국특허분류(USC) | 285/3323 ; 285/354 |
출원번호 | US-0493222 (1983-05-10) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 12 인용 특허 : 4 |
A hose coupling is provided with metallic male and female members which are engaged by means of an internally threaded sleeve which is rotatably secured to the female member. The male and female members are provided with tapered male and female seating surfaces. The male seating surface is interrupted by a circumferential groove cut perpendicular to the axis of the bore of the male member. A deformable O-ring is carried in the groove. The cross-sectional area of the groove is greater than that of the O-ring.
A house coupling, comprising: a female member having a central bore and a frustoconical female seating surface; an internally threaded sleeve rotatably secured to said female member; and an externally threaded male member with threads engaging the threads of said sleeve, having a central bore coaxial with the bore of said female member, a frustoconical male seating surface complementary to said female seating surface, an annular groove in said male seating surface directed substantially perpendicular to the axis of said bore with one side of the groove h...