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) | E05F-001/02 |
미국특허분류(USC) | 16/303 ; 16/330 |
출원번호 | US-0102480 (1993-07-02) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 17 인용 특허 : 0 |
A hinge includes a housing, a barrel rotatably engaged in the housing, a shaft extended in the housing and the barrel, two rings engaged on the shaft and movable along the shaft, springs engaged on the shaft for biasing the rings toward each other, one of the rings has a pair of helical surfaces, and the other ring has two projections for slidably engaging with the helical surfaces. The rings are separated from each other to compress the springs when the door is opened, and the rings are forced toward each other by the springs.
A hinge comprising a housing having a notch formed in a middle portion thereof, a first ear extended from said housing, a barrel engaged in said notch of said housing, a second ear extended from said barrel, a shaft extended in said housing and said barrel and including a first end fixed to said housing, a sleeve secured on said first end of said housing, a wheel secured on a second end of said shaft, a first ring and a second ring engaged on said shaft and movable along said shaft, said first ring slidably coupled to said barrel and rotated in concert w...