Hydrokinetic converter with multiple clutches and control means to simultaneously orselectively engage the same

Claim 1

THE COMBINATION WITH A TRANSMISSION OF THE TYPE HAVING (1) INPUT AND OUTPUT ELEMENTS, (2) A FIRST POWER PATH MEANS INCLUDING A HYDROKINETIC TORQUE CONVERTER AND A FIRST FLUID PRESSURE OPERATED CLUTCH MEANS, (3) A SECOND POWER PATH MEANS INCLUDING A SECOND FLUID PRESSURE OPERATED CLUTCH MEANS, SAID POWER PATH MEANS BEING OPERATIVE TO ALTERNATELY CONNECT SAID ELEMENTS, (4) FLUID PRESSURE PUMP MEANS FOR SUPPLYING FLUID PRESSURE TO ACTUATE SAID FIRST AND SECOND CLUTCH MEANS, (5) MEANS FOR CONDUCTING FLUID PRESSURE FROM SAID PUMP MEANS TO SAID CLUTCH MEANS, OF A CONTROL SYSTEM INCLUDING (A) A FIRST AND A SECOND LAG VALVE EACH HAVING A FIRST AND AN ALTERNALTE POSITION AND BEING INTERPOSED IN SAID CONDUCTING MEANS, (1) SAID FIRST LAG VALVE IN ITS FIRST POSITION BEING OPERATIVE TO CONDUCT FLUID PRESSURE TO SAID FIRST CLUTCH MEANS AND REMAINS IN SUCH FIRST POSITION UNTIL SAID SECOND CLUTCH MEANS IS ENGAGED AND BEING OPERATIVE IN ITS ALTERNATE POSITION TO VENT SAID FIRST CLUTCH MEANS AND DIRECT FLUID PRESSURE TO SAID SECOND CLUTCH MEANS, (2) SAID SECOND LAG VALVE IN ITS FIRST POSITION BEING OPERATIVE TO VENT SAID SECOND CLUTCH MEANS AND DIRECT FLUID PRESSURE TO SAID FIRST CLUTCH MEANS AND INT ITS ALTERNATE POSITION TO DIRECT FLUID PRESSURE TO SAID SECOND CLUTCH MEANS AND REMAINS IN SUCH ALTERNATE POSITION UNTIL SAID FIRST CLUTCH MEANS IS ENGAGED, (B) AND A MAIN CONTROL VALVE BEING INTERPOSED IN SAID CONDUCTING MEANS AND BEING OPERATIVE TO POSITION AND LAG VALVES IN THEIR FIRST AND ALTERNATE POSITIONS IN RESPONSE TO AT LEAST THE SPEED OF ONE OF SAID ELEMENTS.