Propeller

Details Propeller Propeller

1976-05-02

1978-03-21

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Combined or convertible

Hub lubrication or seal

416234, 416238, B63H 126

Patent

active

040800997

ABSTRACT:
A propeller having a specified combination of blade sweep, camber and rake which provides distinct operating advantages when utilized on pleasure boats; and further including weed cutting and protection features which make the prop particularly suitable for use on outboard motors and stern drives employing underwater exhaust through the lower gear case housing. Propeller blade rake and camber are adjusted as described to improve performance of light to moderately loaded, medium to high speed pleasure boats. The blades are swept aft and weed cutting blade-like fingers extend forwardly of the propeller blades to prevent weeds from accumulating forward of the prop and blocking the exhaust passageway.

REFERENCES:
patent: 368416 (1887-08-01), Mosher
patent: 602651 (1898-04-01), Adam
patent: 885174 (1908-04-01), Perkins
patent: 887156 (1908-05-01), Voss
patent: 1087203 (1914-02-01), Walters
patent: 1390397 (1921-09-01), Svenson
patent: 1403729 (1922-01-01), Balaguer
patent: 1593516 (1926-07-01), Sutter
patent: 1813540 (1931-07-01), Laska
patent: 1857327 (1932-05-01), Pilet
patent: 2011821 (1935-08-01), Meyer et al.
patent: 2143693 (1939-01-01), Harris
patent: 3081826 (1963-03-01), Loiseau
patent: 3226031 (1965-12-01), Holland
patent: 3367423 (1968-02-01), Van Ranst
patent: 3371720 (1968-03-01), Blanchard
patent: 3619083 (1971-11-01), Witte

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