Patent ID: 7419041

Claim:
A clutch adapted for engagement in a transmission having a plurality of gear sets and comprising: an input shaft having at least one fluid inlet for pressurized fluid; a rotatable first main shaft portion being engagable with a first gear set; a rotatable second main shaft portion having a spring, said second main shaft portion being engagable with a second gear set; wherein said first main shaft portion is slidably movable with respect to said second main shaft portion and rotatable therewith; wherein said first main shaft portion is in a bias relationship with said spring for movement in a first direction; a piston slidably movable for actuating movement of said first main shaft portion, said piston being selectively in fluid flow communication with sufficiently pressurized fluid at said fluid inlet for movement in a second direction opposite said first direction; wherein said first gear set and said first main shaft portion are engagable and disengagable; wherein said spring biases said first main shaft portion to engage the first gear set when the piston is not in fluid flow communication with sufficiently pressurized fluid at said fluid inlet; wherein sufficiently pressurized fluid at said fluid inlet forces said piston to disengage the first main shaft portion from said first gear set; and wherein when sufficiently pressurized fluid is depleted at said fluid inlet, said spring biases said first main shaft portion to re-engage said first gear set.