Thin film motors
OwnerMenachem Rafaelofinventor
Life of this patent
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Abstract
Apparatus for an electrostatic spindle motor is disclosed. More particularly, a stator having a first plurality of surface electrodes is spaced apart from a rotor having a second plurality of surface electrodes for capacitive coupling. At least one of the first plurality of surface electrodes and the second plurality of surface electrodes is configured to conduct electrical charge. A source is configured to provide electrical charge to the at least one of the first plurality of surface electrodes and the second plurality of surface electrodes and to alternate electrical polarity. The rotor and the stator may comprise bearing surfaces to provide a fluid dynamic bearing.
Claims20
An electrostatic spindle motor apparatus, comprising:
- a stator, the stator having a first plurality of surface electrodes;
- a rotor, the rotor having a second plurality of surface electrodes;
- the first plurality of surface electrodes spaced apart from the second plurality of electrodes to provide capacitive coupling, at least one of the first plurality of surface electrodes and the second plurality of surface electrodes configured to conduct electrical charge;
- and
- a source configured to provide electrical charge to the at least one of the first plurality of surface electrodes and the second plurality of surface electrodes and to alternate electrical polarity.
An electrostatic spindle motor apparatus, comprising:
- a stator, the stator having a first plurality of surface electrodes and a first fluid dynamic bearing surface;
- a rotor, the rotor having a second plurality of surface electrodes and having a second fluid dynamic bearing surface;
- the first plurality of surface electrodes spaced apart from the second plurality of electrodes to provide capacitive coupling, at least one of the first plurality of surface electrodes and the second plurality of surface electrodes configured to conduct electrical charge;
- and
- a source configured to provide electrical charge to the at least one of the first plurality of surface electrodes and the second plurality of surface electrodes and to alternate electrical polarity.
An electrostatic spindle motor apparatus, comprising:
- first electrode means for providing alternating electrical charge thereto;
- second electrode means spaced apart from the first electrode means for capacitive coupling with the first electrode means to provide electromotive force;
- and
- means for providing the alternating electrical charge.
Dependencies are inferred from the claim text.