Self-feathering propeller

Details Self-feathering propeller Self-feathering propeller

1976-05-27

1977-11-15

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Including movement limit stop or damping means

416169R, B63H 120

Patent

active

040583600

ABSTRACT:
A self-feathering propeller for use on sail boats having an auxiliary power source. The propeller blades are rotated automatically to working pitch positions to provide an ahead or an astern thrust in accordance with the direction of rotation of the propeller shaft. When the shaft is stationary and water flow is substantially parallel to the shaft axis, as when the boat is under sail, the blades are automatically feathered thereby to minimize resistance to movement of the boat.

REFERENCES:
patent: 1520746 (1924-12-01), Boyce et al.
patent: 1600654 (1926-09-01), Stodder
patent: 1718525 (1929-06-01), Casey
patent: 2134157 (1938-10-01), Thompson
patent: 2257976 (1941-10-01), Moorman
patent: 2283774 (1942-05-01), Thompson
patent: 2322352 (1943-06-01), Frazier
patent: 2417917 (1947-03-01), Everts

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