Shrouded propeller
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United States of America Patent
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-
Oct 11, 1988
Grant Date -
N/A
app pub date -
Mar 26, 1987
filing date -
Mar 27, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shrouded propeller for operation in ice-filled waters, which arrangement comprises a propeller and a nozzle encirculating the propeller, which propeller arrangement comprises an ice crusher annulus. The propeller arrangement is provided by at least one first flow path for the water flow entering the nozzle, which first path is directed via the interspace between said annulus and the actual nozzle. The first path is further directed to and through the nozzle interior. The arrangement is provided by a flow path for the water main flow through the central portion bordered by said annulus. If the central flow path is obstructed by ice chunks, said first path is available for the water flow inside the nozzle.
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