US4342809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-friction, low-elasticity drive belt for tape cartridges
Assignee: KYBER Corp
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Filing: 1980-06-24
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Granted: 1982-08-03
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Expires: 2000-06-24
Abstract
Abstract Drive belts for tape cartridges featuring a base belt of low coefficient of elasticity with an elastomeric coating having a high coefficient of friction. Three examples of such belts are: (1) polyimide or polyester film base belts with a thin elastomeric film coating; (2) nickel, copper or steel base belts with a thin elastomeric film coating and (3) spirally wound filaments of high modulus of elasticity within an elastomeric matrix having a low modulus of elasticity, the filaments forming the base belt and the elastomeric matrix forming the coating on the base belt, holding the spiral loops in place.
Inventors
- 👤 Chester W. Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:13
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08778; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31721; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
An inelastic compound endless belt for driving tape rolls about their peripheries at high accelerations comprising, an endless base belt having a coefficient of elasticity at least as low as the tape being driven, and an elastomeric coating at least on a side of the base belt facing the tape being driven, said coating having a relatively high coefficient of friction contacting the surface of the tape being driven, the base belt and the elastomeric coating forming a compound belt, said base belt and compound belt having uniform cross-sectional width and thickness, the width being less than the width of the tape being driven and the thickness being less than 5 mils.
Claim 2
Dependent Claim
112 words
An inelastic compound endless belt for driving tape rolls about their peripheries at high accelerations comprising, an endless base belt having a coefficient of elasticity at least as low as the tape being driven, and an elastomeric coating at least on a side of the base belt facing the tape being driven, said coating having a relatively high coefficient of friction contacting the surface of the tape being driven, the base belt and the elastomeric coating forming a compound belt, said base belt and compound belt having uniform cross-sectional width and thickness, the width being less than the width of the tape being driven and the thickness being less than 5 mils.
Claim 3
Dependent Claim
18 words
The belt of claim 1 wherein the thickness of said compound belt is comparable to the tape thickness.
Claim 4
Dependent Claim
18 words
The belt of claim 1 wherein the thickness of said compound belt is less than the tape thickness.
Claim 5
Dependent Claim
23 words
The belt of claim 1 wherein said base belt is made of a material selected from the group consisting of polyester and polyimide.
Claim 6
Dependent Claim
25 words
The belt of claim 1 wherein said base belt is made of a metal material selected from the group consisting of nickel, copper and steel.
Claim 7
Dependent Claim
23 words
The belt of claim 1 wherein said base belt is made of spirally wound fibers having a relatively high Young's modulus of elasticity.
Claim 8
Dependent Claim
24 words
The belt of claim 6 wherein said spirally fibers are selected from the group consisting of silk, fiberglass, graphite and high modulus polyamide fibers.
Claim 9
Dependent Claim
38 words
The belt of claim 1 wherein said spirally wound fibers are held in a matrix formed by said elastomeric coating, the material of said matrix having a relatively low modulus of elasticity and a high coefficient of friction.
Claim 10
Dependent Claim
25 words
The belt of claim 1 wherein said compound belt has a width at least as small as one-half the width of the tape being driven.
References Cited (Backward Citations)
US3208297A
Cited
US3305186A
Cited
US3620473A
Cited
US3692255A
Cited
US3992958A
Cited
US4012962A
Cited
US4216856A
Cited
US4010655A
Cited
US4172569A
Cited
US4127039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-02 | 1986-02-01 | 1986-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-02 | 1990-02-01 | 1990-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-02 | 1994-02-01 | 1994-08-03 | $7700.00 | Window Closed / Lapsed |