US4283455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cover fabrics for V belts which function as wear indicators due to different layer characteristics
Assignee: Highland Industries Inc
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Filing: 1979-11-19
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Granted: 1981-08-11
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Expires: 1999-11-19
Abstract
Abstract A cover fabric for a V belt having increased flex and wear-life, and a method of making the cover fabric. A fabric is bias cut into a continuous strip of fabric. The individual fibers in the continuous strip are impregnated with an elastomeric polymeric material effective to increase the flex and wear-life of the fabric when used as a cover fabric for V belts. This impregnation is accomplished by immersing the strip in a fluid mix having a viscosity of about 2000 cps or less, the mix including a fluid carrier, an elastomeric polymer (e.g. a polychloroprene compound) and a dark pigment. A coating of an elastomeric polymer (e.g. another polychloroprene compound) is applied to the strip, the strip is stretched in its width direction to increase the angular relation of the threads of the fabric relative to its longitudinal axis, and the thus coated strip is dried. The continuous strip is ultimately slit longitudinally of itself into a plurality of tapes, and the tapes are used to cover a V belt.
Inventors
- 👤 James N. McGee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:21
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04; F16G5/06; F16G5/08; B; B29; B29D; B29D29/00; B29D29/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2369; Y10T442/273
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
129 words
An industrial cover fabric for power transmission belts or the like, consisting of a strip of bias cut fabric woven from blended fiber yarns, the individual fibers of said yarns being encapsulated in a dried pigmented elastomeric polymer, and said yarns and encapsulated fibers being over coated with a dried elastomeric polymer, the angular orientation between the warp and weft yarns of said woven fabric being increased to an angle greater than 90° and being held in that position by the dried elastomeric coating, said industrial cover fabric having greatly increased wear life by virtue of said individual fiber encapsulation, the pigment in said pigmented elastomeric polymer being adapted to abrade off with said polymer to reveal unpigmented portions of said fibers when said fabric has outlived its usefulness.
Claim 2
Dependent Claim
129 words
An industrial cover fabric for power transmission belts or the like, consisting of a strip of bias cut fabric woven from blended fiber yarns, the individual fibers of said yarns being encapsulated in a dried pigmented elastomeric polymer, and said yarns and encapsulated fibers being over coated with a dried elastomeric polymer, the angular orientation between the warp and weft yarns of said woven fabric being increased to an angle greater than 90° and being held in that position by the dried elastomeric coating, said industrial cover fabric having greatly increased wear life by virtue of said individual fiber encapsulation, the pigment in said pigmented elastomeric polymer being adapted to abrade off with said polymer to reveal unpigmented portions of said fibers when said fabric has outlived its usefulness.
Claim 3
Dependent Claim
20 words
The product of claim 1 wherein the elastomeric polymer is a polychloroprene, and the pigment is a conductive carbon black.
Claim 4
Dependent Claim
66 words
A bias cut woven fabric cover for a V belt or the like, the fabric cover being produced from a continuous fabric strip by impregnating the individual fibers in the strip with a fluid mix including an elastomeric polymer, a dark pigment and a fluid, and having a viscosity of about 2000 cps or less; applying an elastomeric coating to the strip; and drying the strip.
Claim 5
Dependent Claim
66 words
A bias cut woven fabric cover for a V belt or the like, the fabric cover being produced from a continuous fabric strip by impregnating the individual fibers in the strip with a fluid mix including an elastomeric polymer, a dark pigment and a fluid, and having a viscosity of about 2000 cps or less; applying an elastomeric coating to the strip; and drying the strip.
Claim 6
Dependent Claim
65 words
A bias cut woven fabric cover for a V belt or the like, the fabric cover being produced from a continuous fabric strip by impregnating the individual fibers in the strip with an elastomeric polymeric material effective to increase the wearlife of the fabric when covering a V belt or the like, applying an elastomeric coating to the strip, and drying the thus coated strip.
Claim 7
Dependent Claim
65 words
A bias cut woven fabric cover for a V belt or the like, the fabric cover being produced from a continuous fabric strip by impregnating the individual fibers in the strip with an elastomeric polymeric material effective to increase the wearlife of the fabric when covering a V belt or the like, applying an elastomeric coating to the strip, and drying the thus coated strip.
Claim 8
Independent Claim
102 words
A method of making a cover fabric for V belts or the like, comprising the steps of (a) cutting a fabric into a continuous strip of fabric; (b) impregnating the individual fibers in the continuous strip of fabric with an elastomeric polymeric material effective to increase the wearlife of the fabric when used as a cover fabric for V belts or the like; (c) applying an elastomeric coating to the strip; (d) stretching the strip in its width direction to increase the angular relation of the threads of the fabric relative to its longitudinal axis; and (e) drying the thus coated strip.
Claim 9
Independent Claim
102 words
A method of making a cover fabric for V belts or the like, comprising the steps of (a) cutting a fabric into a continuous strip of fabric; (b) impregnating the individual fibers in the continuous strip of fabric with an elastomeric polymeric material effective to increase the wearlife of the fabric when used as a cover fabric for V belts or the like; (c) applying an elastomeric coating to the strip; (d) stretching the strip in its width direction to increase the angular relation of the threads of the fabric relative to its longitudinal axis; and (e) drying the thus coated strip.
Claim 10
Dependent Claim
34 words
A method as recited in claim 5 wherein step (b) is practiced by immersing the strip in a low viscosity fluid mix of polymeric material, and removing excess mix, prior to practicing step (c).
Claim 11
Dependent Claim
30 words
A method as recited in claim 6 wherein excess mix is removed utilizing a pair of textile pad rolls through which the fabric passes after immersion in a dip tank.
Claim 12
Dependent Claim
23 words
A method as recited in claim 5 wherein steps (c) and (d) are practiced directly after step (b), with no drying in between.
Claim 13
Dependent Claim
32 words
A method as recited in claim 5 comprising the further step of, simultaneously with step (b), improving the cosmetic effect of the fabric by coloring the fabric fibers with a dark pigment.
Claim 14
Independent Claim
33 words
A method as recited in claims 5, 6, 8, or 9 wherein step (b) is accomplished by impregnating the fabric with a fluid mix having a viscosity of about 2000 cps or less.
Claim 15
Independent Claim
32 words
A method as recited in claims 5, 6, 8, or 9 wherein step (b) is accomplished by impregnating the fabric with a fluid mix comprising an elastomeric polymer and a dark pigment.
Claim 16
Independent Claim
52 words
A method as recited in claims 5, 6, 8, or 9 wherein step (b) is accomplished by impregnating the fabric with a fluid mix comprising a major portion of an elastomeric polymer and a minor portion of dark pigment, and the fluid mix having a viscosity of about 2000 cps or less.
Claim 17
Independent Claim
56 words
A method as recited in claims 5 or 9 wherein step (b) is accomplished by impregnating the fabric with a solvent mix comprising a major portion of an elastomeric polychloroprene compound and a minor portion of dark pigment, and the solvent mix having a solids range of about 2-20%, and a viscosity of about 1500±250 cps.
Claim 18
Independent Claim
34 words
A method as recited in claims 5 or 9 comprising the further steps of: slitting the continuous strip longitudinally of itself into a plurality of tapes for covering a V belt or the like.
Claim 19
Dependent Claim
27 words
A method as recited in claim 5 wherein the fabric step (a) is accomplished by slitting the fabric to obtain an angle of between 15° and 60°.
Claim 20
Independent Claim
80 words
A method of treating a bias cut woven fabric continuous strip so that it is suitable for use as a cover fabric for V belts or the like, comprising the steps of (a) impregnating the individual fibers in the strip with a fluid mix including an elastomeric polymer, a dark pigment, and a fluid carrier, said fluid mix having a viscosity of about 2000 cps or less; (b) applying an elastomeric coating to the strip; and (c) drying the strip.
Claim 21
Independent Claim
80 words
A method of treating a bias cut woven fabric continuous strip so that it is suitable for use as a cover fabric for V belts or the like, comprising the steps of (a) impregnating the individual fibers in the strip with a fluid mix including an elastomeric polymer, a dark pigment, and a fluid carrier, said fluid mix having a viscosity of about 2000 cps or less; (b) applying an elastomeric coating to the strip; and (c) drying the strip.
Claim 22
Dependent Claim
17 words
A method as recited in claim 16 wherein a conductive black is employed as the dark pigment.
Claim 23
Dependent Claim
22 words
A method as recited in claim 16 wherein the fluid carrier is a solvent, and the fluid mix is a solvent mix.
Claim 24
Dependent Claim
21 words
A method as recited in claim 16 wherein the fluid carrier is water, and the fluid mix is an aqueous mix.
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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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |