Cooling of head actuator of disk device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 14, 2010
Grant Date -
May 1, 2008
app pub date -
Aug 9, 2007
filing date -
Oct 31, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetic disk device includes a swing-type head actuator which is driven by a voice coil motor. The voice coil motor is cooled by an airflow generated when a magnetic disk accommodated in a disk accommodating unit of an enclosure is rotated by a spindle motor. An airflow dividing member provided on an inner wall or a base of an actuator accommodating unit divides the airflow generated by the rotation of the disk and passing along the inner wall. The divided airflow is introduced to a coil part of the voice coil motor, and cools the coil, without sacrificing the dust purge performance.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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TOSHIBA STORAGE DEVICE CORPORATION | 1-1 SHIBAURA 1-CHOME MINATO-KU TOKYO 105-8001 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Matsuda, Yoshiharu | Kawasaki, JP | 48 | 448 |
# of filed Patents : 48 Total Citations : 448 | |||
Suwa, Masaya | Kawasaki, JP | 15 | 97 |
# of filed Patents : 15 Total Citations : 97 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- G11B Class
- 5.30 % this patent is cited more than
- 15 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Mar 10, 2025 | PD | Priority Date | |
May 13, 2019 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: MICROENTITY |
May 13, 2019 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Apr 07, 2019 | FP | EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Apr 07, 2019 |
Nov 26, 2018 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: MICROENTITY |
Apr 07, 2015 | I | Issuance | |
Mar 18, 2015 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 22, 2014 | F | Filing |

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