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) | E01B-001/00 |
미국특허분류(USC) | 238/2 ; 238/8 ; 238/9 |
출원번호 | US-0548435 (1995-10-26) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 14 인용 특허 : 0 |
A pair of rails are secured on a plurality of perpendicularly disposed ties which rest on a ballast material. A gauge panel is disposed between the rails and has a top surface which is substantially the same height as the rails. Field inserts are positioned on the outside of the parallel rails and field panels, which have a top surface that is substantially the same height as the rails, are positioned in contact with the field inserts. Gauge inserts are inserted into the space between the gauge panel and the parallel rails.
A method of installing an elongated member having a profile with a main body, a leg, and a resilient arm, in a space between a rail and surrounding surface, said method comprising the steps of: positioning the elongated member with the leg extending downward between the rail and the surrounding surface; inserting the elongated member into the space between the rail and the surrounding surface by rotating the elongated member until the main body and the leg are between the rail and the surrounding surface and pressing the elongated member downward until t...