Weedless propeller

Details Weedless propeller Weedless propeller

1981-08-26

1984-11-13

Marcus, Stephen

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Integrally shaped or blended into hub

416239, 416244B, 416245A, B63H 120, B63H 126

Patent

active

044822987

ABSTRACT:
A weedless propeller comprising a major hub having a plurality of propeller blades. The rearward end of the major hub is bluntly terminated immediately aft the trailing edge of the blades at the root of the blades. A secondary hub is connected to the forward end of the primary hub. The junction between the forward end of the secondary hub and the shroud of the engine or motor driving the propeller is spaced a substantial distance from the major hub and blades. Preferably, the diameter of the primary and secondary hub is the same, with the diameter of the forward end of the secondary hub being substantially equal to the diameter of the shroud of the motor to create a streamline flow of water along the shroud and along the secondary and primary hubs.

REFERENCES:
patent: 22373 (1858-12-01), Montgomery
patent: 1010929 (1911-12-01), Loetzer
patent: 2667936 (1954-02-01), Clark
patent: 3709634 (1973-01-01), Lorenz

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