Boat Propeller

Details Boat Propeller Boat Propeller

1974-05-08

1976-02-03

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Spiral blade or flow passage

416200R, B63H 114

Patent

active

039362280

ABSTRACT:
A boat propeller includes an elongated shaft and three vanes which extend outwardly from the shaft at axially spaced positions there along. The vanes lie approximately along a helix on the shaft, and the vanes are spaced about 120.degree. apart around the circumference of the shaft.

REFERENCES:
patent: 645605 (1900-03-01), Pugsley
patent: 847961 (1907-03-01), De La Mar
patent: 1593942 (1926-07-01), Lipari
patent: 2388711 (1945-11-01), Sawyer
patent: 3081826 (1963-03-01), Loiseau

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