Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent
1991-04-01
1992-04-07
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Having positive means for impeller adjustment
Power or manual actuator on non-rotatable part
416165R, 416223R, B63H 300, B63H 100
Patent
active
051023016
ABSTRACT:
Stern drive propulsion systems for boats in which there is at least one prime mover (outboard or inboard motor) and a power train for rotating at least one propeller in the water to propel the boat are improved by inclusion therein of novel variable pitch propellers, and a novel pitch adjusting propulsion system. The system includes a blade and hub mechanism that can propel the boat forwardly and in reverse with great maneuverability, and cut through mud and thick vegetation without becoming fouled, as well operate the boat at high speeds in open water.
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Look Edward K.
Nguyen Hoang
Sieberth John F.
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