US4558386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head cleaner for floppy disk drive
Assignee: SSK ENTERPRISES Inc
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Filing: 1982-06-04
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Granted: 1985-12-10
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Expires: 2002-06-04
Abstract
Abstract A head cleaner includes a generally flat, rectangular sheath 10 formed of flexible top and bottom walls 11 and 12 as is standard in floppy disk construction. The magnetic disk that would be within the sheath is replaced by a flat, absorbent member 17 which has an opening 18 such that it can be mounted on the hub of a disk drive. One of the walls of the sheath has an aperture 22 through which head 34 can extend and contact the absorbent member. A liquid solvent is applied in the aperture to the absorbent member to dissolve built up oxides on the head. The aperture is made wider than standard apertures for floppy disks, and there are additional apertures on other edges of the sheath for providing additional windows. Other windows may be through the other wall of the sheath such that there are eight total windows in the head cleaners. Therefore, the head cleaner can be inserted into the disk drive with any edge leading and with either wall on the head side of the drive.
Inventors
- 👤 Stephen Kara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:09
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/0327; G11B5/00; G11B5/41
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
210 words
In a head cleaner for a disk drive comprising a generally flat, rectangular sheath having flexible top and bottom walls and four edges, a central hub receiving opening through which a hub of a disk drive can extend, a generally flat, absorbent member received within the sheath and having a central opening located in the hub receiving opening of the sheath, and first head receiving aperture means through one wall of the sheath positioned about a line perpendicular from the edge of the sheath to the center of the hub receiving opening of the sheath such that it is positioned under the head of the disk drive when the head cleaning apparatus is in the disk drive, the improvement comprising the provision: three other head receiving aperture means apart from the first head receiving aperture means through the one wall of the sheath, the first head receiving aperture means and the three other head receiving aperture means being on the four lines perpendicular from the center of the hub to the four edges of the sheath for permitting contact of the absorbent member by the head through the first and the three other head receiving aperture means irrespective of which edge of the sheath is inserted into the disk drive.
Claim 2
Dependent Claim
210 words
In a head cleaner for a disk drive comprising a generally flat, rectangular sheath having flexible top and bottom walls and four edges, a central hub receiving opening through which a hub of a disk drive can extend, a generally flat, absorbent member received within the sheath and having a central opening located in the hub receiving opening of the sheath, and first head receiving aperture means through one wall of the sheath positioned about a line perpendicular from the edge of the sheath to the center of the hub receiving opening of the sheath such that it is positioned under the head of the disk drive when the head cleaning apparatus is in the disk drive, the improvement comprising the provision: three other head receiving aperture means apart from the first head receiving aperture means through the one wall of the sheath, the first head receiving aperture means and the three other head receiving aperture means being on the four lines perpendicular from the center of the hub to the four edges of the sheath for permitting contact of the absorbent member by the head through the first and the three other head receiving aperture means irrespective of which edge of the sheath is inserted into the disk drive.
Claim 3
Dependent Claim
41 words
In the head cleaner of claim 1, the improvement further comprising four secondary apertures through the other wall of the sheath and aligned with the first and the three other head receiving aperture means through the first wall of the sheath.
Claim 4
Dependent Claim
35 words
In the head cleaner of claim 1, the improvement further comprising the provision of each of the head receiving aperture means having a maximum width of at least 10% of the width of the sheath.
Claim 5
Dependent Claim
57 words
In the head cleaner of claim 1, the improvement comprising a plurality of sensor holes through the sheath, at least one sensor hole being adjacent each of the head receiving aperture means and at least one hole through the absorbent member positioned under the sensor holes at at least one position during rotation of the absorbent member.
Claim 6
Dependent Claim
32 words
In the head cleaner of claim 1, the improvement further comprising at least one cut-out through each of the edges of the sheath for locating the head cleaner in the disk drive.
Claim 7
Dependent Claim
57 words
In the head cleaner of claim 5, the improvement wherein the sheath has two cut-outs equally spaced from the center of each edge of the sheath for locating the head cleaner in the disk drive irrespective of which edge is inserted into the disk drive and irrespective of which wall faces either side of the disk drive.
Claim 8
Dependent Claim
30 words
In the head cleaner of claim 1, the improvement further comprising the provision of each of the first and the three other head receiving apertures being of the same size.
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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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |