Patent ID: 7002774

Claim:
An enclosure base structure adapted for supporting a filter in a data storage device, wherein one or more data storage discs form a disc stack that, when rotated, impart a velocity to a fluid around the disc resulting in a generally outwardly spiraling fluid flow, the enclosure base structure further comprising a shroud disposed transverse to the disc and concentric with the disc, the shroud defining an inlet having a leading edge and a trailing edge, the leading edge corresponding to the upstream side of the fluid flow and tapering away from the disc edge toward the inlet for locally reducing pressure to urge fluid flow into the inlet, the trailing edge disposed in a closely mating relationship with the disc edge, the shroud defining an outlet that is fluidly connected by a passageway between the inlet and the outlet and disposed radially beyond the shroud for recirculating fluid flow from and then back to the disc stack, the shroud defining first and second receiving features adapted for receivingly engaging opposing ends of the filter, operably supporting the filter within the passageway and extending across the passageway, wherein the filter guides the fluid flow toward the outlet and back to the disc stack.