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) | H04M-011/00 |
미국특허분류(USC) | 379/102 ; 340/82506 ; 251/12904 |
출원번호 | US-0673114 (1984-11-19) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 3 인용 특허 : 0 |
A telephone signal or a radio signal is employed to terminate the through flow of gas through a gas meter to enable the flow of gas to a consumer to be terminated from a remote position. In one embodiment, a weighted arm includes a closure member to obturate an opening. The closure member is part of a weighted arm mounted on a rotatable rod bearing a toothed wheel engaged by a pawl which is operated by an electromagnetic arrangement which in turn is controlled by a signal. Provision is made for resetting the arrangement mechanically by the utilization of...
Apparatus comprising a gas meter, inlet pipe means for supplying gas to said gas meter, outlet pipe means for conveying gas away from said gas meter, internal meter means for converying gas from said inlet means to said outlet means, and control means responsive to a signal originating outside of said meter for interfering with the flow of gas through at least one of the first three said means, said control means including displaceable means having a first position of non-interference with any of the first three said means and a second position for inter...