Patent US5422768A successfully refreshed from Google Patents.
US5422768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compliant hard disk assembly for a recording/reproducing device
Assignee: HP Inc
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Filing: 1994-05-31
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Granted: 1995-06-06
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Expires: 2014-05-31
Abstract
Abstract To minimize unwanted motion in a hard disk assembly in a hard disk drive, an elastomeric support is employed to mount a hard disk pack for rotation by a motor rotor of a disk spindle motor. The hard disk pack includes a hard disk support ring which has opposite annular axial faces upon which the hard disks are securely mounted and axially spaced thereby. An elastomeric connection between the hard disk support ring and a cylindrical body of the motor rotor of the disk spindle motor, provides a soft, or compliant, support for the hard disk pack.
Inventors
- 👤 Donald P. Roehling
- 👤 Gary M. Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:33
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/038; G11B25/00; G11B25/04; G11B25/043
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
A disk assembly for minimizing unwanted disk motion in a hard disk pack comprising: a. a power train including a rotatable cylindrical body with a cylinder axis about which said cylindrical body rotates; b. a hard disk support ring having a hard annular axial face and a central circular opening; c. a hard disk having a central circular opening of greater diameter than said central circular opening of said hard disk support ring; d. means for concentrically securing said hard disk to said hard annular axial face of said hard disk support ring to form a separate hard disk pack; e. said cylindrical body fitting through said central circular opening of said hard disk support ring of said separate hard disk pack, and f. means for cylindrical mounting said hard disk support ring of said separate hard disk pack to said cylindrical body independently of engagement with said hard disk, in a position concentric with said cylinder axis.
Claim 2
Dependent Claim
158 words
A disk assembly for minimizing unwanted disk motion in a hard disk pack comprising: a. a power train including a rotatable cylindrical body with a cylinder axis about which said cylindrical body rotates; b. a hard disk support ring having a hard annular axial face and a central circular opening; c. a hard disk having a central circular opening of greater diameter than said central circular opening of said hard disk support ring; d. means for concentrically securing said hard disk to said hard annular axial face of said hard disk support ring to form a separate hard disk pack; e. said cylindrical body fitting through said central circular opening of said hard disk support ring of said separate hard disk pack, and f. means for cylindrical mounting said hard disk support ring of said separate hard disk pack to said cylindrical body independently of engagement with said hard disk, in a position concentric with said cylinder axis.
Claim 3
Dependent Claim
44 words
The disk assembly according to claim 1, in which said means for compliantly mounting said hard disk support ring of said separate hard disk pack to said cylindrical body comprises: a. elastomeric means disposed between said hard disk support ring and said cylindrical body.
Claim 4
Dependent Claim
192 words
The disk assembly according to claim 1, in which said means for compliantly mounting said hard disk support ring of said separate hard disk pack to said cylindrical body comprises: a. an internal annular flange defining said central circular opening of said hard disk support ring; b. an external annular flange on said cylindrical body; c. an axially displacable clamp on said cylindrical body in a position axially displaced from said external annular flange on said cylindrical body; d. said hard disk support ring being disposed about said cylindrical body between said clamp and said external flange, and e. a first elastic spacer between said internal annular flange on said hard disk support ring and said external annular flange on said cylindrical body and a second elastic spacer between said internal annular flange on said hard disk support ring and said clamp, said clamp applying pressure to said second elastic spacer to thereby secure said internal annular flange of said hard disk support ring to said cylindrical body in compression between said first elastic spacer and said second elastic spacer for resiliently mounting said separate hard disk pack to said cylindrical body.
Claim 5
Dependent Claim
52 words
The disk assembly according to claim 3, in which: a. said pressure applied by said clamp prevents relative angular and radial displacement between said hard disk pack and said cylindrical body due to slippage between said elastic spacers and said cylindrical body and between said elastic spacers and said internal annular flange.
Claim 6
Dependent Claim
16 words
The disk assembly according to claim 3, in which: a. said elastic spacers are elastic toroids.
Claim 7
Dependent Claim
29 words
The disk assembly according to claim 5, in which: a. compression of said elastic toroids in the presence of clamping pressure of said clamp is about 10% to 20%.
Claim 8
Dependent Claim
103 words
The disk assembly according to claim 1, in which said means for resiliently mounting said hard disk support ring of said separate hard disk pack to said cylindrical body comprises: a. a mounting ring concentrically disposed within said central opening of said hard disk support ring; b. an elastomeric spacer disposed between and bonded to said mounting ring and said hard disk support ring, and c. means for securing said mounting ring to said cylindrical body in a position about said cylindrical body concentric with said cylinder axis to provide a compliant mount of said separate hard disk pack to said cylindrical body.
Claim 9
Dependent Claim
99 words
The disk assembly according to claim 7, in which said means for securing said mounting ring of said separate hard disk pack to said cylindrical body comprises: a. an external flange on said cylindrical body; b. an axially displacable clamp on said cylindrical body in a position axially displaced from said external annular flange along said cylindrical body; c. said mounting ring of said separate hard disk pack being disposed about said cylindrical body in a position between said clamp and said external annular flange, said clamp clamping said mounting ring between said clamp and said external annular flange.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-06-05 | 1998-12-05 | 1999-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-05 | 2002-12-05 | 2003-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-05 | 2006-12-05 | 2007-06-06 | $7700.00 | Window Closed / Lapsed |