Marine propeller

Details Marine propeller Marine propeller

1979-08-29

1983-01-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416237, B63H 116

Patent

active

043700969

ABSTRACT:
A marine ring propeller comprising blades, each having parallel edges and a constant cross-section, and a ring in the form of an annular shroud fixed to the outer ends of the blades. The shroud is typically frusto-conical on its inner surface and curved on its outer surface to provide an aerofoil cross-section, apart from the leading edge which is provided with a concave bevel on either or both of the inner and outer surfaces.

REFERENCES:
patent: Re16001 (1925-02-01), Gill
patent: 406708 (1889-07-01), Daniels
patent: 677101 (1901-06-01), Parker
patent: 745871 (1903-12-01), MacDuff
patent: 1467515 (1923-09-01), Stewart
patent: 1518501 (1924-12-01), Gill
patent: 1635840 (1927-07-01), Haw
patent: 1968955 (1934-08-01), Mobley
patent: 2426742 (1947-09-01), Pawlowski
patent: 2438867 (1948-03-01), Rockwell et al.
patent: 3124097 (1964-03-01), Priddle
patent: 3246698 (1966-04-01), Kiekhaefer
patent: 3487805 (1970-01-01), Satterthwaite et al.
patent: 3519367 (1970-07-01), Soulez-Lariviere

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