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) | A63C-005/00 B63B-021/56 |
미국특허분류(USC) | 9/310B ; 114/253 ; 440/34 |
출원번호 | US-0930093 (1978-08-01) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 11 인용 특허 : 3 |
A watersled towed behind a moving boat is steerable from side to side by a rider pulling on or releasing the handle on a single control rope which is attached to a tow rope. The handle is held at various positions by two cleats connected to a raised section of the top deck of the sled between the rider\s legs to facilitate proper operation of the sled. The tow rope is attached to the rear of the sled by being passed through an opening in the hull and knotted. The tow rope is held in proximity to the bottom of the sled by passing the rope through a plasti...
A towed water sled vehicle comprising, a body, a first rope attachment mounted on the body near a stern thereof, a second rope attachment mounted on the body forward of the first attachment, a first rope connected to the first attachment and a second rope connected to the second attachment, joint means for joining the ropes remote from the attachments and means for towing the vehicle from the joint means, and holding means connected to the vehicle for holding the first rope close to the vehicle thereby preventing tipping of the vehicle, the holding means...