US4024895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product reinforcing fabric and two-component weft yarn useful therein
Assignee: EIDP Inc
•
Filing: 1976-03-24
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Granted: 1977-05-24
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Expires: 1996-03-24
Abstract
Abstract A reinforcing fabric comprising a web of tire cords maintained in spaced relationship with sheath-core weft yarns having a cotton sheath about a core of spin-oriented polyester filaments. The weft yarns have a high initial modulus and a high break elongation which is substantially retained after heat aging the yarn at 450° or 475° F. The fabric is particularly useful as reinforcement in radial tire constructions.
Inventors
- 👤 Eugene R. Barron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/48; B; B60; B60C; B60C9/00; B60C9/0042; D02G3/22; D02G3/36; D03; D03D; D03D15/00; D03D15/20; D03D15/208; D03D15/217; D03D15/283; D03D15/40; D03D15/41; D03D15/47; D03D15/50; D03D15/573; D10; D10B; D10B2201/00; D10B2201/01; D10B2201/02; D10B2331/00; D10B2331/04; D10B2505/00; D10B2505/02; D10B2505/022; Y; Y10; Y10S; Y10S57/00; Y10S57/902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
In a reinforcing fabric having a web of tire cords maintained in spaced relationship by weft yarns, an improved weft yarn comprising a cotton sheath twisted about a core of spin-oriented polyester filaments, which yarn has an initial modulus of at least 15 grams per denier and a break elongation of 100 to 150 percent when tested before heating, and which has an initial modulus of at least 15 grams per denier and a break elongation of at least 75 percent when tested after heat aging at 450° F. for 2 minutes.
Claim 2
Dependent Claim
92 words
In a reinforcing fabric having a web of tire cords maintained in spaced relationship by weft yarns, an improved weft yarn comprising a cotton sheath twisted about a core of spin-oriented polyester filaments, which yarn has an initial modulus of at least 15 grams per denier and a break elongation of 100 to 150 percent when tested before heating, and which has an initial modulus of at least 15 grams per denier and a break elongation of at least 75 percent when tested after heat aging at 450° F. for 2 minutes.
Claim 3
Dependent Claim
25 words
A fabric as defined in claim 1 wherein the polyester core is from 35 to 65 percent of the total weight of the weft yarn.
Claim 4
Dependent Claim
17 words
A fabric as defined in claim 2 wherein the polyester core is from 80 to 240 denier.
Claim 5
Dependent Claim
24 words
A fabric as defined in claim 3 wherein the polyester core has a break elongation of 120 to 180 percent when tested before heating.
Claim 6
Dependent Claim
73 words
A yarn comprising a cotton sheath twisted about a core of spin-oriented polyester filaments, which yarn has an initial modulus of at least 15 grams per denier and a break elongation of 100 to 150 percent when tested before heating, and which has an initial modulus of at least 15 grams per denier and a break elongation of at least 75 percent when tested after heat aging at 450° F. for 2 minutes.
Claim 7
Dependent Claim
73 words
A yarn comprising a cotton sheath twisted about a core of spin-oriented polyester filaments, which yarn has an initial modulus of at least 15 grams per denier and a break elongation of 100 to 150 percent when tested before heating, and which has an initial modulus of at least 15 grams per denier and a break elongation of at least 75 percent when tested after heat aging at 450° F. for 2 minutes.
Claim 8
Dependent Claim
24 words
A yarn as defined in claim 5 wherein the polyester core is from 35 to 65 percent of the total weight of the yarn.
Claim 9
Dependent Claim
17 words
A yarn as defined in claim 6 wherein the polyester core is from 80 to 240 denier.
Claim 10
Dependent Claim
24 words
A yarn as defined in claim 7 wherein the polyester core has a break elongation of 120 to 180 percent when tested before heating.
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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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |