Marine propulsion – Screw propeller – Propulsion unit casing
Patent
1992-09-15
1994-01-11
Basinger, Sherman
Marine propulsion
Screw propeller
Propulsion unit casing
440 66, B63H 2126
Patent
active
052776344
ABSTRACT:
Disclosed herein is a lower unit for a marine propulsion device, such as an outboard motor or a stern drive unit, which lower unit comprising a gear case including a torpedo having a fore and aft axis and including a forward portion, a central portion extending rearwardly from the forward portion and having a generally cylindrical configuration concentric with the axis and defined by a radius, and an aft portion extending rearwardly from the central portion and including a circumferentially extending cylindrical sub-portion which is concentric with the axis, and which is defined by the radius, and a circumferentially extending conical sub-portion which is concentric with the axis, which extends for a circumferential length of not more than 180.degree., and which is defined by radii which are greater than the radius and which gradually increase in the direction toward the aft end.
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Calamia David C.
Gruber Erick L.
Basinger Sherman
Outboard Marine Corporation
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