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) | A63H-001/06 A63H-001/00 A63H-013/20 |
미국특허분류(USC) | 446/259 ; 446/236 ; 272/31R |
출원번호 | US-0778528 (1985-09-20) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 12 인용 특허 : 3 |
A domed spinning top is disclosed in which a vertically movable housing member having a transparent dome is mounted above a stationary base. A rotatable turntable is mounted on the housing member under the dome. An actuating mechanism acts upon a drive mechanism to engage the turntable and rotate it during vertical movement of the housing member toward the base. Upon cessation of vertical movement of the housing member toward the base, the actuating mechanism disengages the drive mechanism from the turntable to permit the turntable to rotate freely. A pe...
A spinning top for a generally horizontal support surface comprising: base means adapted to rest on the surface; housing means movable relative to said base means, said housing means having diaphanous dome means attached to an upper portion thereof to define a chamber; resilient compressive means for urging said housing means away from said base means; rotatable means axially mounted on said housing means within said chamber; drive means for engaging said rotatable means to impart rotation thereto; and actuating means operatively connected to said drive ...