US PATENT SUBCLASS 475 / 169
.~ Means to change speed ratio between input and output

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

162  DF  PLANET PERIPHERY SURROUNDS AXIS OF INTERACTING GEAR (E.G., ECCENTRICALLY DRIVEN TRANSMISSON) {11}
169.~ Means to change speed ratio between input and output {4}
170  DF  .~.~> Variable eccentricity
171  DF  .~.~> Plural power paths to planetary gearing
172  DF  .~.~> Condition responsive control
173  DF  .~.~> Plural planetary elements braked

DEFINITION

Classification: 475/169

Means to change speed ratio between input and output:

(under subclass 162) Subject matter including means selectively or automatically actuated to vary the speed ratio*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13, where the speed ratio* change is accompanied by an exchange in function of an input member* and an output member*.

166, for means to change the speed ratio* of friction gearing. [figure]