US4901176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head support assembly for floppy device
Assignee: Toshiba Corp
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Filing: 1988-01-29
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Granted: 1990-02-13
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Expires: 2008-01-29
Abstract
Abstract Disclosed is a magnetic head support assembly for a floppy disc device, in which the pressure of a spring to a magnetic head against a floppy disc is finely adjusted so as to apply a predetermined pressure thereto and to obtain an excellent contact condition between the magnetic head and magnetic disc.
Inventors
- 👤 Takashi Kuzuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:38
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/56; G11B5/58; G11B17/00; G11B17/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
A head supporting assembly able to read data from and write data on either side of a disk having two sides, comprising: a pair of head means for reading data from and writing data on both sides of the disk; a pair of flexible head supporting plates for movably supporting the head means, respectively; a pair of head supporting means, opposed to each other, each for supporting one of the head supporting plates, at least one of the head supporting means being pivotable toward and away from the other head supporting means; a pair of pivot spring means, each mounted on one of the head supporting means, for supporting the head supporting plates; pressure spring means for forcing the head supporting means so that in one of the reading and writing operations the head means contact the disk; in one of the reading and writing operations, the flexible head supporting plates and the pivot spring means bend and provide first pressing forces for maintaining close operative relation between the head means and the disk; adjusting spring means for providing a second pressing force with the pivot spring means, the adjusting spring means having higher flexibility than that of the pivot spring means; and pressure adjusting means for finely adjusting the first pressing forces for the head means by adjusting the second pressing force.
Claim 2
Dependent Claim
223 words
A head supporting assembly able to read data from and write data on either side of a disk having two sides, comprising: a pair of head means for reading data from and writing data on both sides of the disk; a pair of flexible head supporting plates for movably supporting the head means, respectively; a pair of head supporting means, opposed to each other, each for supporting one of the head supporting plates, at least one of the head supporting means being pivotable toward and away from the other head supporting means; a pair of pivot spring means, each mounted on one of the head supporting means, for supporting the head supporting plates; pressure spring means for forcing the head supporting means so that in one of the reading and writing operations the head means contact the disk; in one of the reading and writing operations, the flexible head supporting plates and the pivot spring means bend and provide first pressing forces for maintaining close operative relation between the head means and the disk; adjusting spring means for providing a second pressing force with the pivot spring means, the adjusting spring means having higher flexibility than that of the pivot spring means; and pressure adjusting means for finely adjusting the first pressing forces for the head means by adjusting the second pressing force.
Claim 3
Dependent Claim
36 words
A head supporting assembly according to claim 1, wherein the pressure adjusting means includes a screw, the tip end of which contacts with the adjusting spring means, for adjusting and deflection of the adjusting spring means.
Claim 4
Dependent Claim
47 words
A head supporting assembly according to claim 1, further comprising stopper means for stopping the pivot movement of one of the head supporting means toward the other head supporting means so that a distance between the head supporting means is maintained in the reading and writing operations.
Claim 5
Dependent Claim
37 words
A head supporting assembly according to claim 3, further comprising a second pressure adjusting means for roughly adjusting the first pressing forces by adjusting the distance between the head supporting means in the reading and writing operations.
Claim 6
Dependent Claim
42 words
A head supporting assembly according to claim 4, wherein the second pressure adjusting means includes a screw, one end of which is mounted on one of the head supporting means and the other end of which contacts the other head supporting means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |