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) | E03D-011/02 E03D-011/18 |
미국특허분류(USC) | 4/423 ; 4/318 ; 4/321 ; 4/323 |
출원번호 | US-0822237 (1986-01-24) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 5 인용 특허 : 5 |
A sewage treatment system includes a toilet, vacuum tank, and vacuum pump. The toilet has a discharge portion at its bottom, and a foot operated valve selectively allows, or blocks, passage of water and waste from the toilet bowl into the discharge. When the valve is opened in rushing air forces waste and water from the bowl at high velocity so that the waste fragments. The vacuum tank is connected to the toilet discharge and is disposed directly below it, and has an outlet at its bottom and a dome-shaped baffle, with side openings, covering the vacuum t...
A sewage handling system comprising: a toilet having a discharge portion at the bottom thereof; a vacuum tank connected to said discharge portion of said toilet and having an outlet at the bottom of said vacuum tank; a vacuum switch operatively connected to said vacuum tank and operatively communicating with the interior thereof; a vacuum pump operatively connected by a conduit to said vacuum tank outlet, and operatively controlled by said vacuum switch; and baffle means mounted within said vacuum tank and operatively surrounding said vacuum tank outlet,...