US PATENT SUBCLASS 440 / 12.58
.~.~.~ By flexible endless member (e.g., belt, chain)

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}
12.58.~.~.~ By flexible endless member (e.g., belt, chain)

DEFINITION

Classification: 440/12.58

By flexible endless member (e.g., belt, chain):

(under subclass 12.57) Subject matter wherein the long generally cylindrical slender element is rotated about its longitudinal axis by an annular band made either of (a) a single piece of flexible material or (b) a plurality of individual sections movably connected together.

SEE OR SEARCH THIS CLASS, SUBCLASS:

474, Endless Belt Power Transmission Systems and Components, appropriate subclasses for endless belt power transmission systems and components, per se.