Patent ID: 7008110

Claim:
A spindle motor comprising: a stator; a rotor; a pivot bearing; a fluid dynamic journal bearing; a counter-plate; a fluid dynamic thrust bearing; wherein said stator comprises a bracket, a sleeve affixed to said bracket, a core affixed to said bracket, and coils wound around said core; said rotor comprises a shaft, a rotating hub, and a rotor magnet; said pivot bearing comprises a pivot point at an end of said shaft rotating on said sleeve; said fluid dynamic journal bearing comprises said shaft, said sleeve, a fluid, and pressure generating grooves formed on a vertical surface of one of said shaft and said sleeve; said counter plate is affixed to said sleeve and positioned partially over said shaft; and said fluid dynamic thrust bearing comprises said shaft, said counter-plate, said fluid, and pressure generating grooves formed on a horizontal surface of one of said shaft and said counter-plate.