Title: Icebreaker vessel

Abstract: An icebreaker having a cantilever forecastle from which is suspended one sliding carriage or a plurality of sliding carriages. Each sliding carriage mounts one planing tool or a plurality of planing tools with increasing depth of cut, in a tandem arrangement. The suspension means for each sliding carriage may consist of a linkage or of cables or booms. The one or several sliding carriages are yieldingly suspended and may be withdrawn into the ship's hull. The ice cutting operation may be assisted by vibrating the sliding carriage or supplying heat and/or pressurized water to the planing tools.

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Inventors: Waas, Heinrich (2 Hamburg 33, DT)

Application Number: 488709
Filing Date: 1974-07-15
Publication_date: 1976-08-10
Assignee:
Primary Class(es): 114/42
Other Classes:
US Patent Ref:

17209	May, 1857	Estlack	114/41.
449517	Mar, 1891	Bodenstein	299/24.
3636904	Jan, 1972	Blanchet	114/41.
3648635	Mar, 1972	Hashemi	114/40.
3658024	Apr, 1972	Stoffel	114/40.
3693360	Sep, 1972	Holder	114/40.

Other Refs:
Primary Examiner: Blix, Trygve M.
Assistant Examiner: O'Connor, Gregory W.
Attorney: Toren, McGeady and Stanger