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) | A45C-005/14 |
미국특허분류(USC) | 190/18A ; 190/58B ; 190/42 |
출원번호 | US-0563626 (1975-03-31) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 10 인용 특허 : 0 |
A plurality of recesses are formed in the bottom of a suitcase in spaced relation with each other. A plurality of mounting devices are provided, each movably mounted in a corresponding one of the recesses. Each of a plurality of wheels is rotatably mounted on a corresponding one of the mounting devices. A control system in the suitcase selectively controls the movement of the mounting devices in the recesses in a manner whereby the wheels are spaced from the bottom of the suitcase for supporting the suitcase in one position and are retracted into the rec...
A suitcase device for a suitcase having a top and a bottom, said suitcase device comprising a plurality of recesses formed in the bottom of a suitcase in spaced relation with each other; a plurality of mounting means each movably mounted in a corresponding one of the recesses; a plurality of wheels each rotatably mounted on a corresponding one of the mounting means; and control means in the suitcase for selectively controlling the movement of the mounting means in the recesses in a manner whereby the wheels are spaced from the bottom of the suitcase for ...