US4975795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connection for a self-loading head assembly for disk drives
Assignee: Maxtor Corp
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Filing: 1989-09-13
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Granted: 1990-12-04
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Expires: 2009-09-13
Abstract
Abstract A head assembly for use in connection with a disk storage unit in a digital data processing system. The head assembly maintains a bellows arrangement for loading the head, with air entrained with the disk during disk rotation filling the bellows to force the slider carrying the head into a loaded condition. The air entrained with the disk thus provides the conventional retraction force, resulting from air flow against the slider, as well as a loading force thereby ensuring balance in changes in the forces resulting from variations in speed of the air entrained with the disk.
Inventors
- 👤 John L. Spash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:17
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/16; G11B21/20; G11B21/21; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
102 words
A suspension circuit for use in connection with a head assembly for supporting a slider which has at least one lead extending therefrom, comprising: A. a frame having an inner rim spaced from an outer rim, said inner rim being adapted to receive said slider; B. at least one arm disposed between said inner and outer rims to allow said inner rim to move with respect to said outer rim; and C. at least one electrical conductor formed on said frame and extending between said inner rim and said outer rim via said at least one arm for connection to said lead.
Claim 2
Dependent Claim
102 words
A suspension circuit for use in connection with a head assembly for supporting a slider which has at least one lead extending therefrom, comprising: A. a frame having an inner rim spaced from an outer rim, said inner rim being adapted to receive said slider; B. at least one arm disposed between said inner and outer rims to allow said inner rim to move with respect to said outer rim; and C. at least one electrical conductor formed on said frame and extending between said inner rim and said outer rim via said at least one arm for connection to said lead.
Claim 3
Dependent Claim
69 words
The suspension circuit of claim 1 wherein said head assembly is adapted to be mounted on an elongated arm to position said head assembly over a disk, said suspension circuit including an elongated strip extending from said outer rim, said elongated strip having formed thereon an electrical conductor connected to the electrical conductor at said outer rim for carrying the electrical signal between said lead and external processing circuitry.
Claim 4
Dependent Claim
24 words
The suspension circuit of claim 1 wherein said frame is substantially planar when said slider is in a loaded position juxtaposed a rotating disk.
Claim 5
Dependent Claim
19 words
The suspension circuit of claim 3 wherein said inner rim is adapted to translate relative to said outer rim.
Claim 6
Dependent Claim
20 words
The suspension circuit of claim 4 wherein said inner rim translates along a line perpendicular to said substantially planar frame.
Claim 7
Dependent Claim
22 words
The suspension circuit of claim 1 wherein said inner rim is connected to said outer rim by said at least one arm.
Claim 8
Dependent Claim
14 words
The suspension circuit of claim 6 wherein said at least one arm is resilient.
Claim 9
Dependent Claim
29 words
The suspension circuit of claim 6 further comprising a plurality of said conductors and a plurality of said arms, each said conductor being formed on one of said arms.
Claim 10
Dependent Claim
24 words
The suspension circuit of claim 1 wherein said inner rim and said outer rim are separated by a plurality of perforations in said frame.
Claim 11
Dependent Claim
11 words
The suspension circuit of claim 9 wherein said perforations are elongated.
Claim 12
Dependent Claim
28 words
The suspension circuit of claim 10 wherein said outer rim is rectangular and said elongated perforations are parallel to one of the sides of said rectangular outer rim.
Claim 13
Dependent Claim
12 words
The suspension circuit of claim 10 wherein said inner rim is rectangular.
Claim 14
Dependent Claim
23 words
The suspension circuit of claim 10 wherein said outer rim is circular and said elongated perforations are substantially concentric with said outer rim.
Claim 15
Dependent Claim
16 words
The suspension circuit of claim 1 wherein said frame biases said slider away from said disk.
Claim 16
Dependent Claim
13 words
The suspension circuit of claim 1 wherein said frame comprises a resilient material.
Claim 17
Dependent Claim
12 words
The suspension circuit of claim 15 wherein said resilient material is Kapton.
Claim 18
Dependent Claim
25 words
The suspension circuit of claim 3 wherein said inner rim is adapted to rotate about at least one axis parallel to said substantially planar frame.
Claim 19
Dependent Claim
28 words
The suspension circuit of claim 17 wherein said inner rim is further adapted to rotate about a second axis parallel to the plane defined by said outer rim.
Claim 20
Dependent Claim
18 words
The suspension circuit of claim 18 wherein said second axis is orthogonal to said at least one axis.
Claim 21
Dependent Claim
40 words
The suspension circuit of claim 17 wherein said inner rim is connected to said outer rim by said at least one arm so that said inner rim is inhibited from rotating about an axis perpendicular to said substantially planar frame.
Claim 22
Dependent Claim
114 words
A disk drive comprising: a disk; a head assembly for interacting with said disk, said head assembly including a slider having at least one lead extending therefrom; and a suspension circuit for supporting said slider, comprising: A. a frame having an inner rim spaced from an outer rim, said inner rim being adapted to receive said slider; B. at least one arm disposed between said inner and outer rims to allow said inner rim to move with respect to said outer rim; and C. at least one electrical conductor formed on said frame and extending between said inner rim and said outer rim via said at least one arm for connection to said lead.
Claim 23
Dependent Claim
114 words
A disk drive comprising: a disk; a head assembly for interacting with said disk, said head assembly including a slider having at least one lead extending therefrom; and a suspension circuit for supporting said slider, comprising: A. a frame having an inner rim spaced from an outer rim, said inner rim being adapted to receive said slider; B. at least one arm disposed between said inner and outer rims to allow said inner rim to move with respect to said outer rim; and C. at least one electrical conductor formed on said frame and extending between said inner rim and said outer rim via said at least one arm for connection to said lead.
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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) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |