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) | A63C-001/24 |
미국특허분류(USC) | 280/1128 ; 280/8704 ; A |
출원번호 | US-0973971 (1978-12-28) |
우선권정보 | CH-0016174 (1977-12-29); CH-0006462 (1978-06-14); CH-0009452 (1978-09-08) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 29 인용 특허 : 0 |
A skateboard or the like supported by two articulated steerable trucks which pivot about two non-parallel axes that are oblique with respect to the surface on which the board travels. The two pivotal axes converge to an inter-section lying below the chassis at a point lying between the two support trucks. Each of the trucks includes an articulated member holding a shaft on which wheels are mounted. In order to improve the directional stability of the skateboard, the wheel shafts of each of the two trucks lie rearward of the pivotal axes of the articulate...
A surface vehicle comprising: a chassis; at least two pivotable steering and support trucks attached to said chassis, said trucks being variably pivoted by the relative inclination of said chassis with respect to said trucks, the pivotal axes of said trucks being inclined with respect to the surface on which said vehicle moves and said pivotal axes converging toward one another below said chassis, each of said trucks including an articulated member, each of said articulated members fixedly supported by said trucks, a shaft supported by said articulated m...