US PATENT SUBCLASS 440 / 12.63
.~ Flexible endless track propulsion means

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}
12.63.~ Flexible endless track propulsion means {1}
12.64  DF  .~.~> Driven by sprocket-type wheel

DEFINITION

Classification: 440/12.63

Flexible endless track propulsion means:

(under subclass 12.5) Subject matter wherein the means for moving the vehicle under its own power includes (a) an annular band made either of a single piece of flexible material, or of a plurality of individual treads or sections

movably connected together and (b) the annular band contacting the land or the body of water and applying a force thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95+, for flexible endless track propelling means for a marine vehicle, per se.

SEE OR SEARCH CLASS

180, Motor Vehicles, especially

6.2+, for steering by driving of a motor propelled land vehicle, subclass 6.7 for steering by driving of a motor propelled land vehicle having an endless flexible track, subclasses 9.1+ for a motor propelled land vehicle having a flexible endless track for propulsion, and subclasses 190+ for a motor propelled land vehicle including a ski-like runner or member and a flexible endless track for propulsion.

305, Wheel Substitutes for Land Vehicles, appropriate subclasses, especially 35+, for a flexible endless track for propelling a land vehicle.