US4944995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape having a surface with a low coefficient of friction and long wear characteristics
Assignee: Storage Technology Corp
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Filing: 1988-03-10
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Granted: 1990-07-31
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Expires: 2008-03-10
Abstract
Abstract The tape having a surface with a low coefficient of friction consists of a conformable substrate manufactured of polycarbonate or mylar. Rods of alumina, having cylindrical cross section, are adhesively bonded to the substrate. These rods are parallel to each other, spaced apart at regular intervals and oriented lengthwise across the narrow dimension of the tape. The cylinders of alumina are tapered at both ends so that there is a smooth transition at either edge of the tape. The cylinders of alumina having a very low coefficient of friction and an extremely long lifetime, to thereby provide a surface with a low coefficient of friction for the tape transport path of a magnetic tape drive.
Inventors
- 👤 John C. Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:16
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B23/00; G11B5/00; G11B5/74; G11B5/78; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S428/906; Y10T; Y10T428/00; Y10T428/24; Y10T428/24744; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249941; Y10T428/249942; Y10T428/28; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A tape having a low friction surface comprising: substrate means manufactured from a conformable elongated material of the group including: polycarbonate or mylar, and having first and second sides; a plurality of alumina rods, the surface of which has a low coefficient of friction, attached to said first side of said substrate means at a predetermined spacing for providing said first side of said substrate means with a low friction surface.
Claim 2
Dependent Claim
71 words
A tape having a low friction surface comprising: substrate means manufactured from a conformable elongated material of the group including: polycarbonate or mylar, and having first and second sides; a plurality of alumina rods, the surface of which has a low coefficient of friction, attached to said first side of said substrate means at a predetermined spacing for providing said first side of said substrate means with a low friction surface.
Claim 3
Dependent Claim
23 words
The tape of claim 1 further including: means for adhesively affixing said plurality of rods to said first side of said substrate means.
Claim 4
Dependent Claim
17 words
The tape of claim 1 wherein said substrate means comprises a conformable material of substantially rectangular shape.
Claim 5
Dependent Claim
29 words
The tape of claim 1 wherein said rods are parallel to each other, spaced apart at regular intervals and oriented lengthwise across the narrow dimension of said substrate means.
Claim 6
Dependent Claim
15 words
The tape of claim 1 wherein said rods are cylindrically shaped and have tapered ends.
Claim 7
Dependent Claim
26 words
The tape of claim 1 including: adhesive means affixed to said second side of said substrate means for attaching said low friction tape to a surface.
Claim 8
Dependent Claim
95 words
A tape having a low friction surface comprising: substrate means of substantially rectangular shape and manufactured from a conformable material of the group including: mylar, polycarbonate; a plurality of rods of cylindrical cross section manufactured from alumina; means for adhesively affixing said plurality of rods to one surface of said substrate means in parallel orientation to each other and at regularly spaced intervals along the long dimension of said substrate means; adhesive means affixed to the opposite side of said substrate means from said plurality of cylindrical rods for attaching said tape to a surface.
Claim 9
Dependent Claim
95 words
A tape having a low friction surface comprising: substrate means of substantially rectangular shape and manufactured from a conformable material of the group including: mylar, polycarbonate; a plurality of rods of cylindrical cross section manufactured from alumina; means for adhesively affixing said plurality of rods to one surface of said substrate means in parallel orientation to each other and at regularly spaced intervals along the long dimension of said substrate means; adhesive means affixed to the opposite side of said substrate means from said plurality of cylindrical rods for attaching said tape to a 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) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |