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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0198179 (1988-05-24) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 10 인용 특허 : 5 |
A boom is mounted within a sleeve for longitudinal translation and the sleeve is hinged to a base plate that is securable by a C-clamp to a superstructure beam in front of a manway cover. An hydraulic actuator bears against the sleeve to adjust its elevation. A powered cable winch is joined to one e
Portable remotely controllable apparatus for handling the installation and removal from a manway flange of a manway cover on the underside of a vessel enclosure where said covers are too heavy to be handled by an unaided individual, said apparatus comprising in combination a base member, means for r
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