Patent ID: 8479905

Claim:
A clutch apparatus comprising: a first clutch pack having a plurality of first friction disks, wherein the first clutch pack will selectively transfer torque from a torque supplying member to a first torque receiving member; a second clutch pack having a plurality of second friction disks, wherein the second clutch pack will selectively transfer torque from the torque supplying member to a second torque receiving member; a first rotating manifold having a first central web portion and a first cooling inlet for directing a cooling fluid to the first clutch pack, wherein at least a portion of the first rotating manifold is coupled for rotation with at least a portion of the first friction disks; a second rotating manifold having a second central web portion and a second cooling inlet for directing a cooling fluid to the second clutch pack, wherein at least a portion of the second rotating manifold is coupled for rotation with at least a portion of the second friction disks, and wherein the first central web portion includes at least one first web extension and the second central web portion includes at least one second central web aperture such that when the first rotating manifold is coupled to the second rotating manifold, the first web extension is received within the second central web aperture; and wherein the first rotating manifold and the second rotating manifold are interchangeable; a first piston chamber positioned radially inward of the first clutch pack, wherein the first piston chamber is operably connected the first clutch pack for exerting a compressive force on at least a portion of the first clutch pack as a first fluid is pressurized into the first piston chamber; a first piston and a first balance chamber formed at least partially between the first piston and the torque supplying member, wherein movement of the first piston as a fluid flows into the first piston chamber will displace a second fluid from the first balance chamber, and wherein a portion of the first piston and a portion of the torque supplying member form the pressure boundary for the first piston chamber, and wherein the first piston chamber selectively receives fluid through the first rotating manifold to axially displace the first piston relative to the first rotating manifold.