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-031/00 |
미국특허분류(USC) | 99/280 |
출원번호 | US-0640051 (1975-12-12) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 8 인용 특허 : 1 |
A battery powered coffee maker, for non-boil coffee and the like, including a generally rectangular container having a battery contained in the base of the container, electrical heating elements in the walls and in the base of the container for providing gentle heat, and an insulated housing for the container to reduce heat loss. The apparatus includes electrical circuitry to allow all heating elements to be used for brewing coffee and the like and to allow only the base heating element to be used to maintain serving temperature.
A coffee maker comprising a container and an insulated housing for said container, said container including opposed walls, a top, and a base, a first heating element in one of said opposed walls, a second heating element in the other of said opposed walls, and a third heating element in said base, power supply means in said base, and selector means for selectively connecting said power supply means to said first heating element, said second heating element and said third heating elemenT, said selector means including a first circuit means for connecting ...