Patent ID: 8910766

Claim:
A multi-disc clutch for transmitting torque between a first rotary part and a second rotary part, the multi-disc clutch comprising: a counterpressure plate rotationally and axially fixedly connected to the first rotary part; a disc stack disposed adjacent to the counterpressure plate and including a set of first discs alternatively interleaved with a set of second discs, the first discs being connected for rotation with the first rotary part and axial displacement relative thereto, the second discs being connected for rotation with the second rotary part and axial movement relative thereto, the first discs each having at least two conduit apertures; a pressure piston connected for rotation with the first rotary part and being axially moveable relative to the disc pack and the counterpressure plate between a released position and an engaged position, the pressure piston being operable in its released position to release fictional engagement of the disc stack for establishing a non-torque transferring mode and being operable in its engaged position to frictionally engage the disc stack for establishing a torque transferring mode; a distributor insert fixed for rotation with the pressure piston, the distributor insert being configured to at least partially define a lubricant chamber and including at least two axially-extending tubular conduit extensions that are in fluid communication with the lubricant chamber, each of the at least two tubular conduit extensions arranged to extend through a corresponding one of the at least two conduit apertures in the first discs; a reset device including at least two reset elements each disposed within a corresponding one of the at least two tubular conduit extensions, each of the reset elements arranged to act between the counterpressure plate and the pressure piston for normally biasing the pressure piston toward its released position; an actuator operable for forcibly moving the pressure piston from its released position into its engaged position in opposition to the biasing exerted on the pressure plate by the reset elements; and a lubricant conduit configured to supply a lubricant to the lubricant chamber of the distributor insert.