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) | B62M-007/10 |
미국특허분류(USC) | 180/206 ; 180/220 ; 180/222 ; 200/6112 |
출원번호 | US-0900851 (1978-04-28) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 19 인용 특허 : 4 |
A control system for a combined pedal and battery powered bicycle or companion vehicle in which sensing means is employed to monitor tension in the chain which couples power from the pedal sprocket to the wheel sprocket of such vehicle in order to provide power from the electrical drive as and when needed; and where similar sensing means is employed to monitor activation of the braking system of the vehicle in order to regeneratively brake the vehicle.
A pedal-operated vehicle having at least two wheels, a pedal gear and a gear attached to a first of said wheels, a drive chain connecting both said gears so that rotary pedal motion imparted by a driver of said vehicle to said pedal gear will cause said first wheel to rotate, a battery-powered motor attached to said vehicle and capable of imparting the same sense rotary motion to another wheel of said vehicle as said drive chain imparts to said first wheel, means for sensing increases in chain tension during pedalling of said vehicle, said chain tension ...