Disk drive monitoring a supply current to protect motor...

Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

06934135

ABSTRACT:
A disk drive is disclosed comprising a spindle motor for rotating a disk and a voice coil motor (VCM) for actuating a head over the disk. The spindle motor comprises a plurality of windings, and the VCM comprises a voice coil. If the current flowing from a supply voltage exceeds a threshold, the windings are disconnected from the supply voltage, the voice coil is disconnected from the supply voltage, and the first and second ends of the voice coil are connected to ground.

REFERENCES:
patent: 5442272 (1995-08-01), Schwartz
patent: 5592353 (1997-01-01), Shinohara et al.
patent: 5666463 (1997-09-01), Schwartz et al.
patent: 5774315 (1998-06-01), Mussenden
patent: 5898283 (1999-04-01), Bennett
patent: 5930096 (1999-07-01), Kim
patent: 6013990 (2000-01-01), Lee
patent: 6462496 (2002-10-01), Hassan et al.
patent: 6549359 (2003-04-01), Bennett et al.
patent: 6549361 (2003-04-01), Bennett et al.
patent: 6574062 (2003-06-01), Bennett et al.
patent: 6577465 (2003-06-01), Bennett et al.
patent: 6617817 (2003-09-01), Hill
patent: 6859340 (2005-02-01), Brittner et al.
patent: 6876508 (2005-04-01), Patton et al.
U.S. Appl. No. 10/210,399, filed Jul. 31, 2002 entitled “Decreasing Spin Up Time in a Disk Drive by Adjusting a Duty Cycle of a Spindle Motor PWM Signal to Maintain Constant Average Input Current”.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Disk drive monitoring a supply current to protect motor... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive monitoring a supply current to protect motor..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive monitoring a supply current to protect motor... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3510435

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.