US PATENT SUBCLASS 477 / 61
.~.~.~ Control responsive to fluid drive

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}
61.~.~.~ Control responsive to fluid drive

DEFINITION

Classification: 477/61

Control responsive to fluid drive:

(under subclass 53) Subject matter wherein the gear transmission* is controlled by a condition of the fluid torque transmitting means.

(1) Note. The gear transmission may be controlled, for example, by regulating a clutch* associated with the fluid drive, a ratio changing clutch* or brake*, or the system pressure of the gear transmission* control system.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

731.1, for the combination of a fluid drive and nonplanetary gearing with a condition responsive control but no engine control.

475, Planetary Gear Transmission Systems or Components,

42, 49, and 61+ for the combination of planetary gearing and fluid drive where a gear transmission is controlled by a condition of the fluid drive, but without an engine control.