US5237477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head wiper for bernoulli disk drive
Assignee: EMC Corp
•
Filing: 1991-09-10
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Granted: 1993-08-17
•
Expires: 2011-09-10
Abstract
Abstract A disk drive has a head cleaner which cleans the heads each time the heads are moved from an operating position to a park position. The heads are slidably mounted to move into engagement with a disk when a cartridge containing the disk is inserted into the drive. When the heads are retracted to the park position, a wiper pad is inserted into the gap between the magnetic heads. This removes unwanted particulate matter from the heads.
Inventors
- 👤 Theodore Hodapp
- 👤 James Wold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/41; G11B17/00; G11B17/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
162 words
A disk drive for writing and reading data to and from a disk comprising: a chassis; a magnetic read/write head slidably mounted with respect to said chassis in a plane parallel to said disk, said read/write head being movable between a park position and a read/write position in which said head interacts with said disk, said read/write head including two magnetic heads juxtaposed to read from or write to the magnetic disk surfaces; and a head cleaner positioned in the path in which said read/write head is slidable so that said magnetic heads are cleaned when in contact with said cleaner, said head cleaner being mounted at said park position so that said head cleaner engages said read/write head when said head is in said park position, said head cleaner having a U-shaped wiper mount block with a wiper pad suspended between two legs of said block such that opposing surfaces of said magnetic head contact opposite sides of said wiper pad.
Claim 2
Dependent Claim
162 words
A disk drive for writing and reading data to and from a disk comprising: a chassis; a magnetic read/write head slidably mounted with respect to said chassis in a plane parallel to said disk, said read/write head being movable between a park position and a read/write position in which said head interacts with said disk, said read/write head including two magnetic heads juxtaposed to read from or write to the magnetic disk surfaces; and a head cleaner positioned in the path in which said read/write head is slidable so that said magnetic heads are cleaned when in contact with said cleaner, said head cleaner being mounted at said park position so that said head cleaner engages said read/write head when said head is in said park position, said head cleaner having a U-shaped wiper mount block with a wiper pad suspended between two legs of said block such that opposing surfaces of said magnetic head contact opposite sides of said wiper pad.
Claim 3
Dependent Claim
39 words
The disk drive recited in claim 1 further comprising: arms for mounting said magnetic heads; and an actuator for moving said arms so that said heads are moved between a park position and a read/write relationship with said disk.
Claim 4
Dependent Claim
27 words
The disk drive recited in claim 1 wherein said U-shaped wiper mount block has slots in each leg thereof, said wiper pad being secured in said slots.
Claim 5
Dependent Claim
16 words
The disk drive recited in claim 3 wherein said wiper pad is a random structured fabric.
Claim 6
Dependent Claim
16 words
The disk drive recited in claim 4 further including a head lubricating fluid on said fabric.
Claim 7
Dependent Claim
35 words
The disk drive recited in claim 1 wherein said disk is contained in a cartridge and wherein said head slides in a plane parallel to said disk when said cartridge is inserted in said drive.
Claim 8
Dependent Claim
19 words
The disk drive recited in claim 6 wherein said disk is a floppy disk stabilized by a Bernoulli surface.
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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) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |