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) | G01N-003/00 G01N-017/00 |
미국특허분류(USC) | 73/8665 ; 422/53 ; 436/6 ; 73/86 |
출원번호 | US-0855707 (1986-04-25) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 19 인용 특허 : 7 |
A corrosion coupon holder for inserting and removing a coupon from the interior of a pipeline while under pressure has an elongated housing with a threaded connection at one end and a removable closure device at the other end, the housing connection to be attached to a pipe entry valve which is connected as a branch to the pipeline. The housing other end also carries a guide body having a bore which guidingly and sealingly receives a rod for inserting a coupon having a safety stop element at one end to hold the coupon, the guide body having a split colle...
A test coupon holder for inserting and removing a coupon from the interior of a pipeline comprising: an elongated housing defining a chamber, said housing having connecting means at one end for connecting said housing to a pipe entry valve which is connected as a branch to a pipeline to be tested; a guide body mounted on the other end of said housing having a bore in communication with said chamber; a rod guidingly and sealingly received in said bore, said rod has a portion which extends through said housing and said portion has an end exterior of said h...