Patent ID: 7416341

Claim:
A capillary reservoir, comprising: a first member having a first radial surface; a second member having a second radial surface, the first radial surface coaxial with and opposing the second radial surface, the first radial surface and the second radial surface irrotational with respect to each other; wherein the first radial surface and the second radial surface define an axially tapering gap, the axially tapering gap in fluidic communication with a hydrodynamic bearing region defined by a third surface and a fourth surface; wherein the third surface includes a radial surface of a third member, the fourth surface includes a second radial surface of the first member, the radial surface of the third member and the second radial surface of the first member generally coaxial with the first radial surface and the second radial surface about an axis of rotation, and radially opposing each other; and wherein the third member is disposed radially more distal the axis of rotation than the first member and the second member.