US4490870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning disks containing encoded information
Assignee: Individual
•
Filing: 1982-11-08
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Granted: 1985-01-01
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Expires: 2002-11-08
Abstract
Abstract A roller having a core of natural rubber and an electrostatically activatable, mechanically chargeable outer surface is secured to a handle for rotation about its axis. The outer tacky surface is composed of a soft, flexible, open-air cured silicone polymer having a Shore A durometer hardness of approximately 30. The tacky outer surface is not caused by sticky adhesive but is permanent and formed during the curing process. The outer surface is mechanically chargeable and cleanable by rolling the surface over a second surface covered with a pressure sensitive adhesive. The second surface in one embodiment is the outer surface of a second roller which is biased into contact with the outer surface of the first roller as the first roller is rolled over the surface of a disk to be cleaned.
Inventors
- 👤 Stanley Taub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:15
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/40
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
146 words
Apparatus for cleaning disks containing encoded information, such as phonorecords and videodiscs, comprising: a first roller having a core and an electrostatically activatable, mechanically chargeable outer surface adapted to be rolled over a surface of the disk to be cleaned, said outer surface being composed of a permanently tacky soft, flexible silicone polymer having a Shore A durometer hardness of less than approximately 100, said outer surface being cleanable by rolling it over a second surface covered with a pressure sensitive adhesive; a handle to which the first roller is secured for rotation about its axis; and means for simultaneously cleaning and charging said first roller comprising a second roller supported by said handle for rotation about its axis in continuous rolling contact with said first roller and driven thereby, said second roller having an outer covering of pressure sensitive adhesive around the entire circumference thereof.
Claim 2
Dependent Claim
146 words
Apparatus for cleaning disks containing encoded information, such as phonorecords and videodiscs, comprising: a first roller having a core and an electrostatically activatable, mechanically chargeable outer surface adapted to be rolled over a surface of the disk to be cleaned, said outer surface being composed of a permanently tacky soft, flexible silicone polymer having a Shore A durometer hardness of less than approximately 100, said outer surface being cleanable by rolling it over a second surface covered with a pressure sensitive adhesive; a handle to which the first roller is secured for rotation about its axis; and means for simultaneously cleaning and charging said first roller comprising a second roller supported by said handle for rotation about its axis in continuous rolling contact with said first roller and driven thereby, said second roller having an outer covering of pressure sensitive adhesive around the entire circumference thereof.
Claim 3
Dependent Claim
30 words
Apparatus as set forth in claim 1 wherein surface tackiness of the first roller is at least approximately 20 gms as tested on a Polyken Probe Tack Tester Model 480-2.
Claim 4
Dependent Claim
24 words
Apparatus as set forth in claim 1 wherein the outer surface of the first roller has a Shore A durometer hardness of approximately 30.
Claim 5
Dependent Claim
21 words
Apparatus as set forth in claim 1 further including means for biasing the second roller into contact with the first roller.
Claim 6
Dependent Claim
22 words
Apparatus as set forth in claim 4 further including means for varying the pressure of the first roller against the second roller.
Claim 7
Dependent Claim
19 words
Apparatus as set forth in claim 1 wherein the core of the first roller is composed of natural rubber.
Claim 8
Dependent Claim
21 words
Apparatus as set forth in claim 1 wherein the outer surface of the first roller is approximately 0.03 inches in thickness.
Claim 9
Dependent Claim
116 words
Apparatus for cleaning disks containing encoded information, such as phonorecords and videodiscs, comprising: a first roller having a core and an electrostatically activatable, mechanically chargeable outer surface adapted to be rolled over a surface of the disk to be cleaned; a handle to which the roller is secured for rotation about its axis; and means for simultaneously cleaning and charging said first roller as it is rolled over a surface of the disk to be cleaned comprising a second roller secured to the handle for rotation about its axis in continuous rolling contact with said first roller and driven thereby, said second roller having an outer covering of pressure sensitive adhesive around the entire circumference thereof.
Claim 10
Dependent Claim
116 words
Apparatus for cleaning disks containing encoded information, such as phonorecords and videodiscs, comprising: a first roller having a core and an electrostatically activatable, mechanically chargeable outer surface adapted to be rolled over a surface of the disk to be cleaned; a handle to which the roller is secured for rotation about its axis; and means for simultaneously cleaning and charging said first roller as it is rolled over a surface of the disk to be cleaned comprising a second roller secured to the handle for rotation about its axis in continuous rolling contact with said first roller and driven thereby, said second roller having an outer covering of pressure sensitive adhesive around the entire circumference thereof.
Claim 11
Dependent Claim
23 words
Apparatus as set forth in claim 8 wherein the outer surface of the first roller is composed of a soft, flexible silicone polymer.
Claim 12
Dependent Claim
22 words
Apparatus as set forth in claim 9 wherein the silicone polymer is air cured and rendered permanently tacky on its outer surface.
Claim 13
Dependent Claim
20 words
Apparatus as set forth in claim 10 wherein the silicone polymer has a Shore A durometer hardness of approximately 30.
Claim 14
Dependent Claim
21 words
Apparatus as set forth in claim 8 further including means for biasing the second roller into contact with the first roller.
Claim 15
Dependent Claim
22 words
Apparatus as set forth in claim 12 further including means for varying the pressure of the first roller against the second roller.
Claim 16
Dependent Claim
19 words
Apparatus as set forth in claim 13 wherein the core of the first roller is composed of natural rubber.
Claim 17
Dependent Claim
21 words
Apparatus as set forth in claim 14 wherein the outer surface of the first roller is approximately 0.03 inches in thickness.
Claim 18
Dependent Claim
20 words
Apparatus as set forth in claim 15 wherein the outer surface is secured to the core by silicone rubber cement.
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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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |