US PATENT SUBCLASS 477 / 55
.~.~.~ With countershaft gearing

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

34  DF  TRANSMISSION CONTROL {15}
52  DF  .~ Including fluid drive {2}
53  DF  .~.~ Impeller-turbine-type {8}
55.~.~.~ With countershaft gearing {3}
56  DF  .~.~.~.~> And turbine shaft brake
57  DF  .~.~.~.~> And clutch control
58  DF  .~.~.~.~> Control of or by fluid drive

DEFINITION

Classification: 477/55

With countershaft gearing:

(under subclass 53) Subject matter wherein the gear transmission* comprises intermeshing gears on parallel shafts and wherein the axes of the shafts are fixed.

(1) Note. This is to be distinguished from planetary gearing wherein an axis of a planetary gear is not fixed; but, instead, it rotates about another axis.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

718, 720, and 730.1+ for this type of transmission with a fluid drive but without an engine control.