US PATENT SUBCLASS 475 / 122
.~.~.~.~ Speed responsive valve control

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

31  DF  FLUID DRIVE OR CONTROL OF PLANETARY GEARING {11}
116  DF  .~ Fluid controlled mechanical clutch or brake {12}
118  DF  .~.~ Speed responsive control {3}
121  DF  .~.~.~ Ratio change {1}
122.~.~.~.~ Speed responsive valve control {2}
123  DF  .~.~.~.~.~> Electrical control
124  DF  .~.~.~.~.~> Centrifugal control

DEFINITION

Classification: 475/122

Speed responsive valve control:

(under subclass 121) Subject matter wherein the speed ratio* change is effected by a valve which is moved in response to the velocity of a transmission part.