US PATENT SUBCLASS 440 / 54
.~.~ With means limited to vertical movement within hull cavity

Current as of: June, 1999
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440 /   HD   MARINE PROPULSION

49  DF  SCREW PROPELLER {12}
53  DF  .~ With means effecting or facilitating movement of propulsion unit or a segment of the propulsion unit (e.g., tilting or steering) {9}
54.~.~ With means limited to vertical movement within hull cavity

DEFINITION

Classification: 440/54

With means limited to vertical movement within hull cavity:

(under subclass 53) Device wherein the means to move, assist, or allow the movement of the propulsion unit confines the unit only to movement in a plane perpendicular to the

horizontal, causing the propulsion unit to move in and out of a hollow space within the hull.