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) | B61B-013/08 B60V-003/04 |
미국특허분류(USC) | 104/231 ; 104/134 |
출원번호 | US-0007282 (1987-01-27) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 11 인용 특허 : 2 |
A transportation system is disclosed in which passenger carrying coaches are guided along paths defined by a trackway. The trackway has bottom, top and side tracks which limit movement of the coaches orthogonally to the trackway. The coaches proceed, for the most part, without touching the tracks, being supported by stub wings, mounted on pylons carried by the coaches. Motive power is supplied by a jet engine and primary control of a coach is by airfoil type control surfaces. Auxiliary control is supplied by nozzles which expel pressurized gas to provide...
A transportation system comprising: longitudinally spaced, open topped framework members; longitudinally extending bottom, side and top tracks defining an open trackway system supported within said framework members, said tracks serving as the only connection between said frame work members; a passenger carrying coach in said trackway system; power means to propel said coach in said trackway system; longitudinally spaced pylons carried by said coach and adapted to project through the open top of said framework members; airfoil shaped stub wings carried b...