Abstract: The trans-clutch torque converter of the invention includes a pair of parallel input and output shafts having pairs of interengaging input and output gears on the shafts together with pairs of idler or transfer gears positioned on the shafts between the other pairs of gears thereon and with hydraulic pressure fluid galleries being formed in the housing chamber and with the speed output of the converter being determined by the interengagement and relationship between the gears on the input and output shafts, the improvement comprising using special herringbone gears and side pressure vanes slidably positioned in the housing to move axially thereof for maintaining pressure engagement between the sides of the gears on the input and output shafts after wear thereof, and wherein the gears each have a recess formed in one side face thereof connecting to a hub opening to transmit pressure liquid to the support shaft and a pressure relief orifice therein to aid in controlling the gear interengagement and speed contro

Abstract: A multi-speed trans-clutch torque converter having pairs of input and output gears positioned on parallel input and output shafts in a closed chamber, a plurality of pairs of idler gears journalled on the shafts between the input and output gears, means to supply pressure liquid to the driven input gears for recirculation in the closed chamber by the output gears, and means to move pairs of said idler gears axially to engage said input or said output gears and retain them in their given positions.