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) | B60C-027/00 |
미국특허분류(USC) | 152/179 ; 152/1851 ; 152/187 ; 152/191 |
출원번호 | US-0317559 (1981-11-02) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 19 인용 특허 : 0 |
A wheeled vehicle flotation augmentation device is disclosed herein having at least elongated segments releasably connected together in a continuous and endless series of track block guides so as to form a circular tread about the periphery of a single wheel of the vehicle. The plurality of track block guides in the series are hingably coupled together and the adjacent ends of each segment of track block guides are joined by releasable pins. Each track block guide includes a flat base having outwardly projecting and spaced apart side horns which are sepa...
A wheeled vehicle support apparatus comprising: at least three elongated tread segments; means detachably connecting adjacent ends of said tread segments together to provide a continuous and endless circular tread; each of said tread segments having a plurality of individual track block members hingably coupled together; each of said track block members having ground engaging means on its exterior surface and a tire engaging means on its internal contact surface; each of said track block members is of U-shaped cross section having a flat base with uprigh...