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) | B60P-003/12 |
미국특허분류(USC) | 414/563 ; 414/426 ; 414/595 ; 280/402 |
출원번호 | US-0379948 (1989-07-14) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 13 인용 특허 : 6 |
A towable dolly having a wheel lift mechanism for towing a vehicle by lifting the towed vehicle by its wheels so that contact with the vehicle\s bumper, undercarriage, or axle is avoided and the vehicle rides on its own suspension system. The towing dolly is provided with an inclined rail carrying a carriage with a wheel lift mechanism extending generally horizontally and rearwardly therefrom as the carriage moves along the rail. An inflatable bag may be used to assist the wheel lift, or in lieu thereof.
In a towing dolly for towing a wheeled vehicle, said towing dolly having a frame with ground engaging wheels, a tow hitch at the front end thereof, a rearwardly and downwardly inclined rail, and a vehicle engaging carriage selectively movable along said rail to thereby raise from the ground the wheels at only one end of the vehicle to be towed, the improvement wherein said carriage includes means adopted to lift the wheels of the vehicle to be towed at the end thereof to be raised without otherwise contacting such vehicle so that such vehicle may be supp...