Concave helix impellers propulsion system

Details Concave helix impellers propulsion system Concave helix impellers propulsion system

B - Operations, Transporting

63

H

B63H 1/14 (2006.01)

Patent

CA 2541136

A propeller comprising at least one blade extending radially outwardly from a hub, the blade having a continuously concave profile along its axial depth, and extending helically about the hub.

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