Ice-breaking means for ships

Details Ice-breaking means for ships Ice-breaking means for ships

1977-08-09

1980-04-22

Franfort, Charles E.

Ships

Ice breakers

Cutters

115 19, 299 24, 115 1R, B63B 3508

Patent

active

041989171

ABSTRACT:
Disclosed are ice-breaking units for ships adapted to be installed at the bow and/or bottom portion of the ship's hull, consisting of two ice-breaking units each of which can be reversibly driven independently of each other, for performing ice-breaking and/or propulsion of the ship. The ice-breaking unit has a screw-like body having a spiral blade wound thereabout. The ice-breaking units may be disposed at the bow portion, at both sides of the longitudinal center line of the ship, in parallel with or normal to the latter, or may be arranged to have a propulsion portion and an ice-breaking portion, respectively. The two screw-like bodies may be driven simultaneously in the same direction or reversed, or may be rotated in the opposite directions, to provide thrusts to move the ship in any direction of ahead/astern and port/starboard.

REFERENCES:
patent: 958 (1838-10-01), Hunt
patent: 1041232 (1912-10-01), Berry
patent: 2665655 (1954-01-01), Brown
patent: 3229658 (1966-01-01), Schrader
patent: 3250239 (1966-05-01), Garate
patent: 3381650 (1968-05-01), Itoh
patent: 3632172 (1972-01-01), Robinson

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