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) | E04B-001/344 |
미국특허분류(USC) | 52/66 ; 52/69 ; 296/173 |
출원번호 | US-0755997 (1977-01-26) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 20 인용 특허 : 0 |
Hollow, generally rectilinear structures having a top, a bottom, sides and ends can be constructed so as to be capable of being manipulated between a “normal”or unfolded type configuration and a collapsed or folded configuration in which the ends extend generally parallel to and beneath the top and in which the sides are folded so as to be located next to the ends generally between the bottom and the top. Such a structure includes hinges connecting the ends to the top so that they can be pivoted so as to lie generally parallel to the top. Such a structur...
In a hollow, generally rectilinear structure having a top, a bottom, parallel, spaced, opposed sides extending between said top and said bottom and parallel, spaced, opposed ends extending between said top and bottom the improvement which comprises: frame means for use in providing space into which both of said ends fit when said structure is in a folded configuration, said frame means forming a part of said top, being located generally beneath the remainder of said top and serving to space said sides from the remainder of said top, a first hinge means c...