Back to results
US 6,664,685 B2Granted
High adhesion, wear resistant coatings for spindle motors in disk drive/storage applications
AssigneeSeagate Technology LLC
InventorsMohammad M. Ameen, Raquib U. Khan
Life of this patent
Estimating the term…
Abstract
A disc drive storage system including a housing having a central axis, a stationary member that is fixed with respect to the housing and coaxial with the central axis, and a rotatable member that is rotatable about the central axis with respect to the stationary member is described. A hydrodynamic bearing interconnects the stationary member and the rotatable member and includes at least one working surface comprising a wear resistant coating.
Claims18
A disc drive storage system comprising:
- a housing having a central axis;
- a stationary member that is fixed with respect to the housing and coaxial with the central axis;
- a stator fixed with respect to the housing;
- a rotatable member that is rotatable about the central axis with respect to the stationary member;
- a rotor supported by the rotatable member and magnetically coupled to the stator;
- at least one data storage disc attached to and coaxial with the rotatable member;
- an actuator supporting a head proximate to the data storage disc for communicating with the disc;
- and
- a hydrodynamic bearing interconnecting the stationary member and the rotatable member, the bearing having at least one working surface including a wear resistant, low frictional coating having a thickness within a range of about 3000 nanometers to about 5 microns.
6 more elements
A motor comprising:
- a housing having a central axis;
- a stationary member that is fixed with respect to the housing and coaxial with the central axis;
- a stator fixed with respect to the housing;
- a rotatable member that is rotatable about the central axis with respect to the stationary member;
- a rotor supported by the rotatable member and magnetically coupled to the stator;
- and
- a hydrodynamic bearing interconnecting the stationary member and the rotatable member, the bearing having at least one working surface including a wear resistant, low frictional coating having a thickness within a range of about 3000 nanometers to about 5 microns.
4 more elements
A motor, comprising:
- a hydrodynamic bearing interconnecting a stationary member and a rotatable member, wherein the hydrodynamic bearing has at least one working surface;
- and
- the at least one working surface includes a wear reducing means thereon having a thickness within a range of about 3000 nanometers to about 5 microns.
Dependencies are inferred from the claim text.