Patent US4586100A successfully refreshed from Google Patents.
US4586100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning disc
Assignee: Discwasher Inc
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Filing: 1983-03-18
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Granted: 1986-04-29
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Expires: 2003-03-18
Abstract
Abstract A cleaning device for cleaning contact-type information transducing heads is disclosed. The device has a substrate covered in part by a cleaning material and partly by a recording surface. A program is stored on the recording surface for directing the transducing head toward cleaning material for each cleaning operation. An embodiment is disclosed in which memory locations on the recording surface count the number of cleaning program executions, indicate specifically available cleaning areas and indicate when the cleaning device has been completely used.
Inventors
- 👤 David J. Howe
- 👤 Paul E. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:23
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/41; G11B21/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
79 words
A cleaning disc for a contact-type information transducing head coupled to apparatus with program reading capabilities comprising: a substrate; a recording surface covering a first portion of said substrate; cleaning means covering a second portion of said substrate; and program means recorded on said recording surface for providing instructions to direct the transducing head onto said cleaning means, said program means comprising means for directing the transducing head to varying portions of the cleaning means during successive cleaning operations.
Claim 2
Dependent Claim
79 words
A cleaning disc for a contact-type information transducing head coupled to apparatus with program reading capabilities comprising: a substrate; a recording surface covering a first portion of said substrate; cleaning means covering a second portion of said substrate; and program means recorded on said recording surface for providing instructions to direct the transducing head onto said cleaning means, said program means comprising means for directing the transducing head to varying portions of the cleaning means during successive cleaning operations.
Claim 3
Dependent Claim
38 words
The cleaning disc of claim 1 wherein said cleaning means comprises a layer of adhesive bonded to said substrate and a web of fabric bonded to said adhesive forming ridges adapted to remove material from the transducing head.
Claim 4
Dependent Claim
14 words
The cleaning disc of claim 1 wherein said cleaning means comprises a non-abrasive fabric.
Claim 5
Dependent Claim
16 words
The cleaning disc of claim 1 wherein said cleaning means includes a plurality of cleaning areas.
Claim 6
Dependent Claim
35 words
The cleaning disc of claim 1 wherein the directing means comprises memory means located on said recording surface for storing information indicating to said program means which of said cleaning areas are available for cleaning.
Claim 7
Dependent Claim
26 words
The cleaning disc of claim 5 wherein said memory means indicates to said program means when there are no available cleaning areas remaining on the disc.
Claim 8
Dependent Claim
13 words
The cleaning disc of claim 6 wherein said memory means comprises a counter.
Claim 9
Dependent Claim
44 words
The cleaning disc of claim 7 wherein said program means comprises: means for incrementing said counter for each performance of a cleaning operation; and means for preventing further use of each of the cleaning areas after a respective selected maximum number of cleaning operations.
Claim 10
Dependent Claim
25 words
The cleaning disc of claim 8 wherein the selected maximum number of cleaning operations varies in accordance with the size of the associated cleaning area.
Claim 11
Dependent Claim
99 words
A cleaning device for a magnetic head comprising: a disc-shaped substrate having first and second sides; a plurality of annular cleaning areas on the first side of said substrate; an annular magnetic oxide layer located on said first side of said substrate; memory means located on said magnetic oxide layer for storing information indicating which of said cleaning areas is available for cleaning the magnetic head; and program means recorded on said magnetic oxide layer for directing the magnetic head into position relative said substrate so that the magnetic head wipes against selected ones of said available cleaning areas.
Claim 12
Dependent Claim
99 words
A cleaning device for a magnetic head comprising: a disc-shaped substrate having first and second sides; a plurality of annular cleaning areas on the first side of said substrate; an annular magnetic oxide layer located on said first side of said substrate; memory means located on said magnetic oxide layer for storing information indicating which of said cleaning areas is available for cleaning the magnetic head; and program means recorded on said magnetic oxide layer for directing the magnetic head into position relative said substrate so that the magnetic head wipes against selected ones of said available cleaning areas.
Claim 13
Dependent Claim
28 words
The cleaning device of claim 10 wherein said memory means further comprises means for indicating to said program means when no available cleaning area remains on the device.
Claim 14
Dependent Claim
41 words
The cleaning device of claim 10 wherein said plurality of cleaning areas comprises a layer of adhesive bonded to said substrate and a plurality of elongated strips bonded to the adhesive forming ridges adapted to remove material from the magnetic head.
Claim 15
Dependent Claim
20 words
The cleaning device of claim 10 wherein said plurality of cleaning areas on said substrate comprises a non-abrasive, lint-free fabric.
Claim 16
Dependent Claim
13 words
The cleaning device of claim 10 wherein said memory means comprises a counter.
Claim 17
Dependent Claim
45 words
The cleaning device of claim 14 wherein said program means comprises: means for incrementing said counter for each cleaning operation performed by the device; and means for preventing further use of each of the cleaning areas after a respective selected maximum number of cleaning operations.
Claim 18
Dependent Claim
25 words
The cleaning device of claim 15 wherein the selected maximum number of cleaning operations varies in accordance with the size of the associated cleaning area.
Claim 19
Dependent Claim
91 words
A cleaning device for a magnetic head comprising; a disc-shaped substrate having first and second sides; cleaning means covering a first portion of the first side of said substrate, said cleaning means including a plurality of concentric annular cleaning areas; an annular recording surface covering a second portion of the first side of said substrate; program means stored on said recording surface for providing instructions to direct said magnetic head into contact with successive ones of the cleaning areas in successive cleaning operations; and a jacket for enveloping said disc-shaped substrate.
Claim 20
Dependent Claim
91 words
A cleaning device for a magnetic head comprising; a disc-shaped substrate having first and second sides; cleaning means covering a first portion of the first side of said substrate, said cleaning means including a plurality of concentric annular cleaning areas; an annular recording surface covering a second portion of the first side of said substrate; program means stored on said recording surface for providing instructions to direct said magnetic head into contact with successive ones of the cleaning areas in successive cleaning operations; and a jacket for enveloping said disc-shaped substrate.
Claim 21
Dependent Claim
48 words
The cleaning device of claim 17 wherein the cleaning means comprises a web of fabric, forming ridges adapted to remove material from the magnetic head and adhesive deposited on the surface of the substrate between the ridges, said adhesive adapted to capture material removed from the magnetic head.
Claim 22
Dependent Claim
14 words
The cleaning device of claim 17 wherein the cleaning means comprises a lint-free fabric.
Claim 23
Dependent Claim
41 words
The cleaning device of claim 17 wherein the annular recording surface comprises an inner annular recording surface and an outer annular recording surface, and wherein the plurality of annular cleaning areas are disposed between the inner and outer annular recording surfaces.
Claim 24
Dependent Claim
15 words
The cleaning device of claim 17 wherein said recording surface comprises a magnetic oxide layer.
Claim 25
Dependent Claim
44 words
The cleaning device of claim 21 further comprising memory means located on said magnetic oxide layer, and means included in the program means, for directing the storage of information in the memory means to indicate which of said cleaning areas remains available for cleaning.
Claim 26
Dependent Claim
56 words
The cleaning device of claim 22 wherein the program means comprises means for preventing further use of each of the cleaning areas after a selected maximum number of uses, said selected maximum number of uses being larger for a first cleaning area having a larger size than for a second cleaning area having a smaller size.
Claim 27
Dependent Claim
29 words
The cleaning device of claim 22 wherein said memory means comprises a counter which is incremented by said program means for each cleaning operation performed by the clearing device.
Claim 28
Dependent Claim
29 words
The cleaning device of claim 24 wherein said memory means comprises means for identifying to said program means a specific available cleaning are for each value of said counter.
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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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |