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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0194868 (1988-05-17) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 11 인용 특허 : 2 |
An environmentally safe monitoring well cap has a base and a hingely rotatable cap attached to the base. The base includes a coupling section which fits around the monitoring well casing and the coupling sections includes a ledge having an O-ring position thereagainst for contacting the top of the c
A cap for an environmental monitoring well, said well including a casing extending from an area below ground to be monitored, said casing being encased in grout, said cap comprising: a base, including affixation means extending therefrom to form an environmentally safe seal with said well casing and
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