Icebreaker
AssigneeBifrost Tug AS
InventorsSteinar Andersen, Bjarne Engen
Life of this patent
Estimating the term…
Abstract
Icebreaker (10) for a vessel (12), where the icebreaker (10) is connected to a bow (12a) of a vessel (12) for breaking up solid ice (40) floating on a water surface, the icebreaker (10) comprises a central part (14) sliding on a first side of the ice (40) and two or more side parts (16) sliding on an opposite part of the ice (40). The centre part (14) and the side parts (16) extend in parallel forward and works against each other when breaking the ice (40) to prevent the ice (40) from lifting, wherein a lower edge of the side parts (16), being in contact with the ice (40), is narrow and sharp to initiate breaking lines (50) in the ice (40), and the centre part (14) comprises a forward protruding cam structure (14a) to break the ice (40) between the side parts (16).
Claims10
An Icebreaker (10) for a vessel (12), where the icebreaker (10) is connected to a bow (12a) of the vessel (12) for breaking up solid ice (40) floating on a water surface,
- the icebreaker (10) comprises a centre part (14) sliding and abutting a first side of the ice (40) and two or more side parts (16) sliding on an opposite part of the ice (40),
- the centre part (14) and the side parts (16) extend in parallel forward and works against each other when breaking the ice (40) to prevent the ice (40) from lifting,
- a lower edge of the side parts (16), being in contact with the ice (40), is narrow and sharp to initiate breaking lines (50) in the ice (40), and
- one or more of the side parts (16) comprises a downward extending rear ice knife (24) to further break up the ice (40),
- the centre part (14) comprises a forward protruding cam structure (14a) to break the ice (40) between the side parts (16),
- the forward protruding cam structure (14a) of the centre part (14), which is in contact with the solid ice (40), comprises an inclined and sharp edge for initiating breaking (50) lines in the ice (40), and
- the centre part (14) has a foot like shape and is connected to a downward extending leg (30) from a connecting part (18), and the centre part is shaped with side faces (32) inclining up toward the leg (30).
Dependencies are inferred from the claim text.