US PATENT SUBCLASS 477 / 37
.~ Continuously variable friction transmission

Current as of: June, 1999
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477 /   HD   INTERRELATED POWER DELIVERY CONTROLS, INCLUDING ENGINE CONTROL

34  DF  TRANSMISSION CONTROL {15}
37.~ Continuously variable friction transmission {8}
38  DF  .~.~> With fluid drive
39  DF  .~.~> With clutch control
40  DF  .~.~> With brake control
41  DF  .~.~> Interrelated control of diverse transmissions
42  DF  .~.~> Constant speed output
43  DF  .~.~> Controlled by engine map
44  DF  .~.~> Belt-type {1}
50  DF  .~.~> Fluid pressure control

DEFINITION

Classification: 477/37

Continuously variable friction transmission:

(under subclass 34) Subject matter wherein the gear transmission* is of a type having a steplessly changeable speed ratio* and includes toothless gearing that transmits force by frictional contact.