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) | B62D-055/04 |
미국특허분류(USC) | 180/921 ; 180/926 |
출원번호 | US-0216775 (1994-03-23) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 22 인용 특허 : 0 |
A traction unit for the road wheel of a farm tractor, or an analogous vehicle, that includes two idler wheels, located near the front and rear surfaces of the road wheel tire, and an endless flexible belt, trained around the three wheels. Each idler wheel has a pneumatic tire, located in the same plane as the vehicle tire, so that the three tires track along the midplane of the belt. The idler wheels are mounted on a tubular beam, that is rockably suspended from an axle member aligned with the road wheel axle, such that the belt lies essentially flat on ...
A traction unit for attachment to a pre-existing road wheel of a vehicle, wherein said road wheel comprises an axle and a pneumatic tire having a tread surface rotatable around an axle defined by said axis; said traction unit comprising an axle means connected to said vehicle road wheel so that said axle means is aligned with said road wheel axis; a normally horizontal rigid beam assembly having first and second ends, said rigid beam assembly being located below said axle means so that said beam assembly extends in opposite directions from a vertical pla...