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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0047921 (1993-04-19) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 18 인용 특허 : 0 |
A subsurface chamber formed by a pit and buried beneath a surface across which aircraft travel is provided with an effective sealing system at its opening. The opening to the chamber is formed by a mounting frame adapted to receive and seat a lid therewithin. The mounting frame is formed with a frus
In an access lid assembly having a lid of rigid construction throughout that is able to withstand the weight applied by the tires of an aircraft traveling thereacross and an annular mounting frame located atop a subsurface chamber used to service aircraft and defining an opening therewithin and in w
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