US5202804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic disk drive with a magnetic head rotationally actuated
Assignee: Toshiba Corp
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Filing: 1991-05-16
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Granted: 1993-04-13
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Expires: 2011-05-16
Abstract
Abstract A magnetic disk drive for reading information stored in a recording disk and/or writing information to the recording disk comprises a magnetic head for reading and/or writing information to the recording disk, an arm portion for carrying the magnetic head on one end thereof, an elastic portion for elastically supporting another end of the arm portion, the arm portion being rotatably supported, a fixed portion for holding the arm through the elastic portion, and a driver for rotating the arm portion by a driving force, the magnetic head carried on the arm portion being moved in the radial direction of the recording disk.
Inventors
- 👤 Shigeru Takekado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:45
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B5/00; G11B5/48; G11B5/4806; G11B5/4833; G11B25/00; G11B25/04; G11B25/043; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
A magnetic disk drive with a magnetic head rotationally actuated for reading information stored in a recording disk and/or writing information to the recording disk, comprising: a magnetic head for reading and/or writing information to the recording disk; an arm portion for carrying the magnetic head on one end thereof; an elastic portion for elastically supporting another end of the arm portion, the elastic portion including a first elastic element extended in the longitudinal direction of the arm portion and a second elastic element extended in the lateral direction of the arm portion; a fixed portion connected with the arm portion through the first and second elastic elements for holding the arm portion through the elastic portion; and a driver for rotating the arm portion by a driving force, the magnetic head carried on the arm portion being moved in the radial direction of the recording disk.
Claim 2
Dependent Claim
147 words
A magnetic disk drive with a magnetic head rotationally actuated for reading information stored in a recording disk and/or writing information to the recording disk, comprising: a magnetic head for reading and/or writing information to the recording disk; an arm portion for carrying the magnetic head on one end thereof; an elastic portion for elastically supporting another end of the arm portion, the elastic portion including a first elastic element extended in the longitudinal direction of the arm portion and a second elastic element extended in the lateral direction of the arm portion; a fixed portion connected with the arm portion through the first and second elastic elements for holding the arm portion through the elastic portion; and a driver for rotating the arm portion by a driving force, the magnetic head carried on the arm portion being moved in the radial direction of the recording disk.
Claim 3
Dependent Claim
39 words
A magnetic disk drive according to claim 1, wherein the first and second elastic elements are pliably bent so as to rotate the arm portion, and the elastic portion is stiff to prevent the arm portion from moving straight.
Claim 4
Dependent Claim
19 words
A magnetic disk drive according to claim 1, wherein the elastic portion is integrally molded with the arm portion.
Claim 5
Dependent Claim
26 words
A magnetic disk drive according to claim 1, wherein a viscoelastic material is applied to the elastic portion for adding viscoelastic characteristics to the elastic portion.
Claim 6
Dependent Claim
27 words
A magnetic disk drive according to claim 1, wherein the driver includes a drive coil coiled parallel to a plane on which the arm portion is moved.
Claim 7
Dependent Claim
22 words
A magnetic disk drive according to claim 5, wherein a part of the drive coil is integrally molded with the arm portion.
Claim 8
Dependent Claim
16 words
A magnetic disk drive according to claim 1, wherein the arm portion is made of resin.
Claim 9
Dependent Claim
29 words
A magnetic disk drive according to claim 1, wherein the driving force generated by the driver is given between one end and the other end of the arm portion.
Claim 10
Dependent Claim
27 words
A magnetic disk drive according to claim 1, including a resinous frame for setting the recording disk, and a resinous lid for sealing the magnetic disk drive.
Claim 11
Dependent Claim
28 words
A magnetic disk drive according to claim 1, wherein the recording disk is a hard disk of which the diameter is equal to or less than 2.5 inches.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |