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) | H05B-003/02 F24H-001/12 A47J-031/44 |
미국특허분류(USC) | 219/302 ; 99/288 ; 165/165 ; 165/168 |
출원번호 | US-0003917 (1979-01-16) |
우선권정보 | DE-2804784 (1978-02-04) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 42 인용 특허 : 0 |
An electrical resistance water heating device, particularly intended for use in coffee or other beverage preparation machines, includes a solid metal heating plate having planar upper and lower surfaces. A fluid throughflow duct is formed between the upper and lower surfaces and includes at least two elongated, spaced, side-by-side branches having corresponding ends interconnected by a connecting conduit to form a continuous fluid flow path from a water inlet to a water outlet. An elongated slot is formed between each pair of side-by-side branches and at...
An electrical resistance heating device suitable for use in a hot-plate or the like comprising a solid metal heating plate having a plate-shaped body and planar upper and lower surfaces, and a fluid throughflow duct formed therein between said upper and lower surfaces, said duct including at least two elongated, spaced side-by-side branches having corresponding ends interconnected by a connecting conduit to form a continuous fluid flow path in a single plane from a fluid inlet to a fluid outlet of said body, an elongated slot being formed in said plate b...