Patent ID: 8157447

Claim:
An apparatus comprising: a fluid dynamic bearing defined between an inner component and an outer component, wherein the inner component and the outer component are positioned for relative rotation; a groove configuration defined on at least one of the inner component and the outer component, wherein the groove configuration comprises: a first primary leg connected to a second primary leg forming a primary apex therebetween; and a first secondary leg connected to a second secondary leg forming a secondary apex therebetween, wherein the first primary leg and the second primary leg pump fluid toward, and increase pressure at, the primary apex, the first secondary leg and the second secondary leg pump fluid toward, and increase pressure at, the secondary apex, the first primary leg and the second primary leg extend a greater circumferential distance about the fluid dynamic bearing surface as compared to the first secondary leg and the second secondary leg, and the secondary apex is situated closer to an axial end of a journal bearing, as compared to the primary apex.