Of course, other means for raising and lowering the piston could equally well be used. 6 is somewhat different in that a piston (4) working in the chamber (3) is raised by means of a winch (23), a pulley (24) and a chain or wire (22) and can be lowered under its own weight and by the weight of incoming water. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles Manually-movable jib-cranes for use in workshops Floating cranes
B66C23/18- Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g.B66C23/00- Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g.B66C- CRANES LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES.B63B1/107- Semi-submersibles Small waterline area multiple hull vessels and the like, e.g.B63B1/10- Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls.B63B1/02- Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement.
B63B1/00- Hydrodynamic or hydrostatic features of hulls or of hydrofoils.B63B35/44- Floating buildings, stores, drilling platforms, or workshops, e.g.B63B35/00- Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for.B63B- SHIPS OR OTHER WATERBORNE VESSELS EQUIPMENT FOR SHIPPING.B63- SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT.206010047654 Vitreous floaters Diseases 0.000 description 2.240000004282 Grewia occidentalis Species 0.000 description 4.238000001514 detection method Methods 0.000 claims description 4.230000000875 corresponding Effects 0.000 claims description 6.XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42.Application granted granted Critical Publication of US4898288A publication Critical patent/US4898288A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links
Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from GB8405689 external-priority Application filed by Heerema Engr Service BV filed Critical Heerema Engr Service BV Assigned to HEEREMA ENGINEERING SERVICE BV, A DUTCH CORPORATION reassignment HEEREMA ENGINEERING SERVICE BV, A DUTCH CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Original Assignee Heerema Engr Service BV Priority date (The priority date is an assumption and is not a legal conclusion. HEEREMA ENGINEERING SERVICE BV A DUTCH Corp Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Erdbrink Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US06/708,441 Inventor Robert J.
#Semi submersible crane vessel pdf#
Google Patents Semi-submersible crane vesselĭownload PDF Info Publication number US4898288A US4898288A US06/708,441 US70844185A US4898288A US 4898288 A US4898288 A US 4898288A US 70844185 A US70844185 A US 70844185A US 4898288 A US4898288 A US 4898288A Authority US United States Prior art keywords vessel piston crane chamber set forth Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4898288A - Semi-submersible crane vessel US4898288A - Semi-submersible crane vessel
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