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

E - Fixed Constructions

02

B

61/9

E02B 17/00 (2006.01) E02B 15/02 (2006.01)

Patent

CA 1080491

ABSTRACT OF THE DISCLOSURE A rotary ice-breaking body having a spiral rotary blade is attached to a structure for use in icy waters at a part which comes into contact with an ice lump. 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 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.

291514

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