Hull and propeller arrangement

Details Hull and propeller arrangement Hull and propeller arrangement

2005-02-08

2005-02-08

Basinger, Sherman (Department: 3617)

Marine propulsion

Screw propeller

Having means to control flow around propeller

C440S049000, C440S079000

Reexamination Certificate

active

06851991

ABSTRACT:
Hull and propeller arrangement for a surface watercraft (1), provided with at least one propeller (3), in addition to which the propeller (3), at high speeds of the watercraft, is surface-piercing, and the propeller (3) is arranged in such a manner that only the propeller blades (11) or parts thereof are submerged in the water at high speeds of the watercraft (1), in addition to which the hull (2) is provided with at least one streamlined projecting part (4) extends essentially in the longitudinal direction of the hull (2), the projecting part (4), in terms of its outer shape, has, at its aft end (6), an end edge (15) which, at least in part, extends essentially transversely to the longitudinal direction of the projecting part (4), the propeller (3) is locaded immediately astern of the end edge (15), and a part of the propeller, in the radial direction, extends beyond the delimiting surfaces of the projecting part (4). Each projecting part (4) is arranged in such a manner that, at high speeds of the watercraft (1), a bearing area (8) for the watercraft (1) is formed, which consists essentially of a part of the surface of the projecting part (4), which is situated immediately forward of the end edge (15) and on the very bottom of the projecting part (4).

REFERENCES:
patent: 3164118 (1965-01-01), Lopez
patent: 3709187 (1973-01-01), Marco et al.
patent: 3793980 (1974-02-01), Sherman
patent: 4371350 (1983-02-01), Kruppa et al.
patent: 4406635 (1983-09-01), Wiihrer
patent: 4648345 (1987-03-01), Wham et al.
patent: 4924797 (1990-05-01), Solia
patent: 5474011 (1995-12-01), Steinberg
patent: 5957078 (1999-09-01), Van Tassel
patent: 6045420 (2000-04-01), Small et al.
patent: WO 9939973 (1999-08-01), None

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