Patent ID: 8534440

Claim:
A clutch arrangement, comprising: a housing having an interior space and configured to be filled with fluid; a first friction surface formation configured to be rotatable with the housing around an axis of rotation; a second friction surface formation configured to be rotatable with a driven element around the axis of rotation; a pressing element configured to be rotatable with the housing around the axis of rotation that divides the interior space of the housing into a first spatial area and a second spatial area, the pressing element is movable with respect to the housing for producing and canceling a frictional engagement between the first friction surface formation and the second friction surface formation based at least in part on the fluid pressure in the first spatial area and the fluid pressure in the second spatial area; a fluid supply system for at least one of the first spatial area and the second spatial area comprising at least one of a first fluid flow path for the first spatial area and a second fluid flow path for the second spatial area, wherein the fluid is supplied to the respective spatial area via the respective fluid flow path and the fluid is removed from the associated spatial area via at the respective fluid flow path; and at least one delivery element configured to generate an internal fluid circulation, wherein the second friction surface formation comprises a friction element connected to the pressing element, and a delivery surface is provided at least one of at least partially at the friction element and at an intermediate element connecting the friction element to the pressing element, and wherein the delivery element forms at least one of: an integral component part of the pressing element, a friction element of the second friction surface formation connected to the pressing element, and an intermediate element connecting the friction element to the pressing element, and wherein the delivery element is provided at a delivery member that is fixedly connected thereto.