Marine drives and propeller devices having exhaust venting for enhanced reverse thrust performance

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United States of America Patent

PATENT NO 11459078
SERIAL NO

17109536

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A propeller device has a propeller hub which is elongated along the rotational axis and a propeller blade which radially extends from the propeller hub. The propeller hub and propeller blade are configured so that when the propeller device is forwardly rotated, a first portion of the propeller hub on a first side of the propeller blade encounters a positive pressure and a second portion of the propeller hub on an opposite, second side of the blade encounters a relatively lower pressure or suction, and further so that when the propeller device is reversely rotated, the second portion of the propeller hub encounters a positive pressure and the first portion of the propeller hub encounters a relatively lower pressure or suction. An exhaust vent hole is located in the first portion of the propeller hub and configured to vent exhaust gases from the marine drive via the propeller hub as the propeller device is reversely rotated, thereby enhancing reverse thrust performance of the propeller device.

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Patent Owner(s)

Patent OwnerAddress
BRUNSWICK CORPORATION26125 N RIVERWOODS BLVD STE 500 METTAWA IL 60045

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fregonese, Brian J Fond du Lac, US 4 38
George, Trevor Savoy, US 15 83
Gunderson, Andrew C Fond du Lac, US 5 4
Reifsnyder, Jeffrey D Fond Du Lac, US 7 8
Schmidt, David M Omro, US 5 52

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