Ice-breaking apparatus for structure for use in icy waters

Details Ice-breaking apparatus for structure for use in icy waters Ice-breaking apparatus for structure for use in icy waters

1977-11-23

1980-10-28

Corbin, David H.

Hydraulic and earth engineering

Marine structure or fabrication thereof

Structure protection

114 42, E02B 1700, B63B 3512

Patent

active

042304237

ABSTRACT:
A rotary ice-breaking body having a spiral rotary blade is attached to a structure for use in icy waters at a part falling in contact with an ice lump or ice floe. The rotary blade is actuated to bite into the ice lump and to lift up or press down the ice lump. The ice lump is broken by the flexural stress and the structure is protected from influences of the ice lump. One rotary ice-breaking body may be disposed to constitute the outer periphery of the structure. Alternately, a plurality of rotary ice-breaking bodies may be disposed to surround the structure so that they are driven and rotated simultaneously or independently.

REFERENCES:
patent: 3667416 (1972-06-01), Fioravanti et al.
patent: 3669052 (1972-06-01), Schirtzinger
patent: 3759046 (1973-09-01), Anders
patent: 3807179 (1974-04-01), Stone
patent: 4048943 (1977-09-01), Gerwick

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