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) | B63C-013/00 |
미국특허분류(USC) | 9/12 ; 188/4R |
출원번호 | US-0970754 (1978-12-18) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 18 인용 특허 : 0 |
A wheeled body member is arranged to be attained to the bow of a boat and such body member has two positions one of which holds the wheeled support in a raised position allowing normal operation of the boat and the other of which holds the wheeled support in a lowered ground engaging position. The body member has a hitch so that it can be releasably secured to a towing vehicle. A brake mechanism is provided to prevent rearward rotation of the wheel when desired. In one embodiment, mounting arms are employed having releasable ball-type connectors which pe...
A wheel support assembly for a pointed bow, V-bottom boat comprising (a) a body member having forward and rearward ends and opposite sides, (b) a wheel on said body member, (c) a pair of arms having opposite ends, (d) means connecting one end of said arms to respective sides of said body member, (e) connecting means on the other end of said arms arranged to connect said other end to opposite sides of a boat rearwardly of the bow, (f) abutting means on each side of said body member rearwardly of the connection of said arms to said body member, (g) said ar...