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" |
국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | A47J-031/10 |
미국특허분류(USC) | 99/279 ; 99/299 ; 99/306 ; 99/323 |
출원번호 | US-0172440 (1988-03-24) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 19 인용 특허 : 0 |
A tea brewing apparatus comprising an upper container for simmering tea therein and a lower container for storing the tea brewed in the upper container. The bottom face of the upper container is provided with a tea dripping hole for allowing tea which was brewed in the upper container to flow into the lower container. A ball-activated sieve with an arched stem is disposed in the upper container and above the dripping holes so as to prevent tea leaves from dropping into the lower container. A steel ball disposed inside the sieve is attached to a distal en...
A separative tea brewing apparatus, comprising: a lower container having a spout on an upper edge thereof; an upper container, a circumferential wall thereof being stepped with a diameter of a lower portion thereof slightly smaller than that of an upper portion thereof, and a bottom face of said upper container being inclined from a periphery thereof to a center thereof and being provided with a dripping hole in said center thereof; a ball-activated sieve disposed on said bottom face of said upper container, comprising: sieve being semispherical and a se...