Patent US3759112A successfully refreshed from Google Patents.
US3759112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-belt
Assignee: Individual
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Filing: 1971-09-01
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Granted: 1973-09-18
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Expires: 1991-09-01
Abstract
Abstract A V-belt, wound on whose core at an angle of 45* is a rubberized fabric strip produced by warpwise cutting of this fabric. The strip is helically lap-wound on the core to form belt covering layers, the number of which is obtained by the displacement of the strip convolutions, and depends on the strip width.
Inventors
- 👤 I Polshikov
- 👤 L Kurdin
- 👤 A Titarenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:11
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04; F16G5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A V-belt comprising: a rubber-fabric core; covering material wound on said core with its fibers at an angle of 45* to the longitudinal direction of the V-belt, and forming covering layers; said material having the form of a covering strip produced from rubberized fabric cut along its warp, said strip being helically lap-wound on said core, a predetermined number of said layers being displaced relative to one another in the convolutions of said strip; wherein the width of said strip is determined by the formula: B K P sin Alpha , wherein B is said width of the strip, K is said number of the layers, P is the perimeter of the V-belt cross section, and Alpha is the angle at which said material is wound on said core.
Claim 2
Dependent Claim
129 words
A V-belt comprising: a rubber-fabric core; covering material wound on said core with its fibers at an angle of 45* to the longitudinal direction of the V-belt, and forming covering layers; said material having the form of a covering strip produced from rubberized fabric cut along its warp, said strip being helically lap-wound on said core, a predetermined number of said layers being displaced relative to one another in the convolutions of said strip; wherein the width of said strip is determined by the formula: B K P sin Alpha , wherein B is said width of the strip, K is said number of the layers, P is the perimeter of the V-belt cross section, and Alpha is the angle at which said material is wound on said core.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |