Transmission

Claim 2

IN A HYDRODYNAMIC BRAKE, THE COMBINATION OF A ROTOR DRIVEN BY SOURCE OR TORQUE AND A STATOR COACTING TO DEFINE A FLUID WORKING CIRCUIT, MEANS MOVABLE RELATIVE TO THE CIRCUIT AND SO ARRANGED AS TO VARY THE RESISTANT CAPACITY OF THE BRAKE, A SOURCE OF FLUID UNDER PRESSURE, AND MEANS RESPONSIVE TO TORQUE DEMAND FOR SUPPLYING THE WORKING CIRCUIT WITH FLUID FROM THE SOURCE AT VARIABLE FLOW RATES, AND MEANS FOR AT TIMES EMPTYING SAID BRAKE.

Claim 3

IN A TRANSMISSION, THE COMBINATION OF DRIVING AND DRIVEN MEMBERS, PLANETARY GEARING INTERPOSED BETWEEN THE DRIVING AND DRIVEN MEMBERS FOR PROVIDING A PLURALITY OF DRIVE RATIOS THEREBETWEEN, THE PLANETARY GEARING COMPRISING FIRST AND SECOND GEAR UNITS EACH INCLUDING IMPUT, OUTPUT, AND REACTION ELEMENTS, THE FIRST GEAR UNIT HAVING THE INPUT ELEMENT THEREOF ROTATABLE BY THE DRIVING MEMBER, THE SECOND GEAR UNIT HAVING THE OUTPUT ELEMENT THEREOF ROTATABLE WITH THE DRIVEN MEMBER, BRAKE MEANS FOR PREVENTING ROTATION OF EACH GEAR UNIT REACTION ELEMENT IN ONE DIRECTION SO AS TO AFFORD ONE DRIVE RATIO THROUGH THE RESPECTIVE GEAR UNITS, AN INTERMEDIATE CLUTCH OPERATIVE TO DRIVE CONNECT THE FIRST GEAR UNIT OUTPUT ELEMENT AND THE SECOND GEAR UNIT IMPUT ELEMENT, A FIRST GEAR UNIT CLUTCH OPERATIVE TO JOIN THE DRIVING MEMBER AND THE IMPUT ELEMENT OF THE SECOND GEAR UNIT SO AS TO PROVIDE IN CONJUNCTION WITH SAID INTERMEDIATE CLUTCH ANOTHER DRIVE RATIO THROUGH THE FIRST GEAR UNIT, AND A SECOND GEAR UNIT CLUTCH OPERATIVE TO JOIN THE FIRST AND SECOND GEAR UNIT OUTPUT ELEMENTS SO AS TO FURNISH ANOTHER DRIVE RATIO THROUGH THE SECOND GEAR UNIT, THE INTERMEDIATE CLUTCH BEING INOPERATIVE SO AS TO PERMIT THE BRAKE MEANS TO BE EFFECTIVE IN THE NEUTRAL CONDITION OF THE TRANSMISSION.

Claim 4

IN A TRANSMISSION, THE COMBINATION OF DRIVING AND DRIVEN MEMBERS, PLANETARY GEARING INTERPOSED BETWEEN THE DRIVING AND DRIVEN MEMBERS FOR PROVIDING A PLURALITY OF DRIVE RATIOS THEREBETWEEN, THE PLANETARY GEARING COMPRISING FIRST AND SECOND GEAR UNITS EACH INCLUDING IMPUT, OUTPUT, AND REACTION ELEMENTS, THE FIRST GEAR UNIT HAVING THE INPUT ELEMENT THEREOF ROTATABLE BY THE DRIVING MEMBER, THE SECOND GEAR UNIT HAVING THE OUTPUT ELEMENT THEREOF ROTATABLE WITH THE DRIVEN MEMBER, BRAKE MEANS FOR PREVENTING ROTATION OF EACH GEAR UNIT REACTION ELEMENT IN ONE DIRECTION SO AS TO AFFORD ONE DRIVE RATIO THROUGH THE RESPECTIVE GEAR UNITS, AN INTERMEDIATE CLUTCH OPERATIVE TO DRIVE CONNECT THE FIRST GEAR UNIT OUTPUT ELEMENT AND THE SECOND GEAR UNIT IMPUT ELEMENT, A FIRST GEAR UNIT CLUTCH OPERATIVE TO JOIN THE DRIVING MEMBER AND THE IMPUT ELEMENT OF THE SECOND GEAR UNIT SO AS TO PROVIDE IN CONJUNCTION WITH SAID INTERMEDIATE CLUTCH ANOTHER DRIVE RATIO THROUGH THE FIRST GEAR UNIT, AND A SECOND GEAR UNIT CLUTCH OPERATIVE TO JOIN THE FIRST AND SECOND GEAR UNIT OUTPUT ELEMENTS SO AS TO FURNISH ANOTHER DRIVE RATIO THROUGH THE SECOND GEAR UNIT, THE INTERMEDIATE CLUTCH BEING INOPERATIVE SO AS TO PERMIT THE BRAKE MEANS TO BE EFFECTIVE IN THE NEUTRAL CONDITION OF THE TRANSMISSION.

Claim 5

IN A TRANSMISSION, THE COMBINATION OF DRIVING AND DRIVEN MEMBERS, PLANETARY GEARING INTERPOSED BETWEEN THE DRIVING AND DRIVEN MEMBERS AND COMPRISING FIRST AND SECOND GEAR UNITS EACH INCLUDING INPUT, OUTPUT, AND REACTION ELEMENTS, THE FIRST GEAR UNIT HAVING THE INPUT ELEMENT THEREOF ROTATABLE BY THE DRIVING MEMBER, THE SECOND GEAR UNIT HAVING THE OUTPUT ELEMENT THEREOF ROTATABLE WITH THE DRIVEN MEMBER, A PLURALITY OF RATIO ESTABLISHING DEVICES OPERATIVE TO RENDER THE GEAR UNITS EFFECTIVE SO AS TO PROVIDE A PLURALITY OF DRIVE RATIOS THROUGH THE TRANSMISSION, ONE OF THE DRIVE RATIO CHANGES REQUIRING A RECONDITIONING OF BOTH GEAR UNITS, THE RATION ESTABLISHING DEVICES INCLUDING A BRAKE FOR RESISTING ROTATION OF ONE OF THE GEAR UNIT REACTION ELEMENTS IN ONE DIRECTION SO AS TO CONDITION SAID ONE OF THE GEAR UNITS FOR ONE DRIVE RATIO, AND MEANS CAUSING THE OPERATION OF THE RATIO ESTABLISHING DEVICES TO BE SO CORRELATED THAT DURING SAID ONE DRIVE RATIO CHANGE REQUIRING A RECONDITIONING OF BOTH GEAR UNITS THE RATIO ESTABLISHING DEVICES FOR PRODUCING SAID ONE DRIVE RATIO CHANGE ARE RENDERED EFFECTIVE PRIOR TO SAID ONE DRIVE RATIO CHANGE WHILE THE BRAKE IS RENDERED INEFFECTIVE AND AT THE TIME OF SAID ONE RATIO CHANGE ONLY THE BRAKE IS RENDERED EFFECTIVE.

Claim 6

IN A TRANSMISSION, THE COMBINATION OF DRIVING AND DRIVEN MEMBERS, PLANETARY GEARING INTERPOSED BETWEEN THE DRIVING AND DRIVEN MEMBERS AND COMPRISING FIRST AND SECOND GEAR UNITS EACH INCLUDING INPUT, OUTPUT, AND REACTION ELEMENTS, THE FIRST GEAR UNIT HAVING THE INPUT ELEMENT THEREOF ROTATABLE BY THE DRIVING MEMBER, THE SECOND GEAR UNIT HAVING THE OUTPUT ELEMENT THEREOF ROTATABLE WITH THE DRIVEN MEMBER, A PLURALITY OF RATIO ESTABLISHING DEVICES OPERATIVE TO RENDER THE GEAR UNITS EFFECTIVE SO AS TO PROVIDE A PLURALITY OF DRIVE RATIOS THROUGH THE TRANSMISSION, ONE OF THE DRIVE RATIO CHANGES REQUIRING A RECONDITIONING OF BOTH GEAR UNITS, THE RATION ESTABLISHING DEVICES INCLUDING A BRAKE FOR RESISTING ROTATION OF ONE OF THE GEAR UNIT REACTION ELEMENTS IN ONE DIRECTION SO AS TO CONDITION SAID ONE OF THE GEAR UNITS FOR ONE DRIVE RATIO, AND MEANS CAUSING THE OPERATION OF THE RATIO ESTABLISHING DEVICES TO BE SO CORRELATED THAT DURING SAID ONE DRIVE RATIO CHANGE REQUIRING A RECONDITIONING OF BOTH GEAR UNITS THE RATIO ESTABLISHING DEVICES FOR PRODUCING SAID ONE DRIVE RATIO CHANGE ARE RENDERED EFFECTIVE PRIOR TO SAID ONE DRIVE RATIO CHANGE WHILE THE BRAKE IS RENDERED INEFFECTIVE AND AT THE TIME OF SAID ONE RATIO CHANGE ONLY THE BRAKE IS RENDERED EFFECTIVE.