US PATENT SUBCLASS 440 / 58
.~.~ Having toothed or threaded member to move propulsion unit or a segment of the propulsion unit


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}
58.~.~ Having toothed or threaded member to move propulsion unit or a segment of the propulsion unit {2}
59  DF  .~.~.~> Screw type
60  DF  .~.~.~> Rack and pinion


DEFINITION

Classification: 440/58

Having toothed or threaded member to move propulsion unit or a segment of the propulsion unit:

(under subclass 53) Device wherein the means to move or assist in the movement of the propulsion unit includes the interengaging projections of gears or helical ridges of screws interacting with some complementary member.