US PATENT SUBCLASS 440 / 12.59
.~.~.~ By gearing

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

12.5  DF  SELF-PROPELLED VEHICLE HAVING LAND AND WATER PROPULSION MEANS (E.G., AMPHIBIOUS VEHICLE) {5}
12.51  DF  .~ Having separated propulsion means for land and water {4}
12.57  DF  .~.~ Motor driven screw propeller shaft {2}
12.59.~.~.~ By gearing {2}
12.6  DF  .~.~.~.~> Bevel gearing
12.61  DF  .~.~.~.~> Spur gearing

DEFINITION

Classification: 440/12.59

By gearing:

(under subclass 12.57) Subject matter wherein the long generally cylindrical slender element is rotated about its longitudinal axis by (a) a toothed wheel, cylinder or other machine element that meshes with (b) another toothed wheel, cylinder or other machine element to transmit motion or to change speed or direction.

SEE OR SEARCH CLASS

74, Machine Elements and Mechanisms, appropriate subclasses, for a gearing arrangement, per se.