Propeller exhaust hub and shroud

Details Propeller exhaust hub and shroud Propeller exhaust hub and shroud

1978-12-20

1983-06-14

Basinger, Sherman D.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

416 93A, 416193R, B63H 120

Patent

active

043880703

ABSTRACT:
A propeller for controlling the discharge of gases and cooling water exhausting from the central hub of an outboard motor unit comprising a cylindrical shroud surrounding the propeller hub to confine the exhaust to the inner most part of the blades and discharge it downstream of the propeller when operating the unit in the forward or reverse mode. Several attachments to this shroud which enhance the discharge performance of the propeller are disclosed. An alternate embodiment comprises a shroud which may be attached to a conventional through-hub marine propulsion device to channel the exhaust away from the propeller area.

REFERENCES:
patent: 573351 (1896-12-01), Parker
patent: 2948252 (1960-08-01), Alexander
patent: 3356151 (1967-12-01), Strang
patent: 3554665 (1971-12-01), Lorenz
patent: 3576172 (1971-04-01), Ward
patent: 3764228 (1973-10-01), Shook
patent: 3871324 (1975-03-01), Kasschau
patent: 4276036 (1981-06-01), Nishida

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