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) | E05F-001/10 E05F-001/12 E06B-003/36 E05F-003/20 E05D-003/02 |
출원번호 | US-0808159 (2015-07-24) |
등록번호 | US-9725940 (2017-08-08) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 0 인용 특허 : 24 |
A hinge assembly that includes a closure member such as a door and a torsion bar that extends between hinge assemblies about which the door pivots so that the torsion bar becomes twisted when the door is moved between a closed position and an open position. The twisting of the torsion bar creates potential energy in the torsion which can be used to open or close the door. A force adjustment mechanism is provided which releases built-up potential energy in the torsion bar in a controlled manner so as to close open the door in a controlled manner.
1. In a door assembly having a door and a door frame and a door hinge mechanism the improvement comprising: a torsion bar about which the door rotates between an open and a closed position wherein one end of the torsion bar is attached to the door frame so as not to rotate with respect to the door frame and another end of the torsion bar is fixedly attached to the door so as to become twisted as the door is pivoted between open and closed positions, whereby when the door is moved between the closed and open positions the torsion bar twists between the en...