Ships – Building – Canal and ferry boats
Patent
1977-05-31
1978-07-25
Shapiro, Jacob
Ships
Building
Canal and ferry boats
61 1F, 61 54, 114 40, E02B 1502, B63B 3544
Patent
active
041021444
ABSTRACT:
A stationary offshore platform is protected against damage from moving ice sheets by a conical shield surrounding the platform support structure and having means, such as a pneumatic biasing system, for raising or lowering the shield along the platform support. A system of mooring lines, thrustors, or the like is used to rotate the shield about the platform support. After an advancing ice sheet contacts the narrower upper portion of the shield, the shield is raised so that a wider lower portion of the shield can exert an upward force on the ice sheet to break the ice into pieces. The shield is rotated, while in its elevated position, to carry the broken ice with it to a location downstream from the advancing ice sheet. The shield is then lowered to dump back into the ocean the ice pieces broken by the upstroke of the shield. Means are provided for heating the exterior surfaces of the shield to melt ice pieces sticking to it.
REFERENCES:
patent: 3093360 (1972-09-01), Holder
patent: 3779019 (1973-12-01), Pogonowski et al.
patent: 3807179 (1974-04-01), Stone
patent: 3831385 (1974-08-01), Hudson et al.
Global Marine Inc.
Shapiro Jacob
LandOfFree
Method and apparatus for protecting offshore structures against does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for protecting offshore structures against , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for protecting offshore structures against will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1414800