US PATENT SUBCLASS 475 / 21
.~ With infinitely variable drive

Current as of: June, 1999
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475 /   HD   PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS

18  DF  STEERING BY DRIVING {6}
21.~ With infinitely variable drive {3}
22  DF  .~.~> Variable drive is fluid drive {1}
25  DF  .~.~> Belt type
26  DF  .~.~> Variable drive is friction drive

DEFINITION

Classification: 475/21

With infinitely variable drive:

(under subclass 18) Subject matter wherein at least one of the plural drive trains* includes a means to vary the speed ratio* steplessly. [figure]