Patent ID: 8243451

Claim:
A cooling member for withdrawing heat from a device containing heat, said cooling member comprising: a housing having a central fluid inlet and a radially spaced fluid outlet, said housing in physical contact with the device; a plurality of irregular-shaped fins located at least partially within said housing, said plurality of irregular-shaped fins surrounding and extending radially from said central fluid inlet: and a plurality of irregular-shaped and hierarchical branched fluid pathways between said plurality of irregular-shaped fins, said plurality of irregular-shaped and hierarchical branched fluid pathways having a pathway inlet and a pathway outlet with at least one of said irregular-shaped and hierarchical branched fluid pathways having a non-uniform width that decreases and then increases between said pathway inlet and said pathway outlet, said housing and plurality of irregular-shaped fins operable for a fluid to flow through said central fluid inlet, flow through said plurality of irregular-shaped and hierarchical branched fluid pathways, exit through said radially spaced fluid outlet and withdraw the heat: from the device.