US5513683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tires made using elastomers containing springy fibers
Assignee: Goodyear Tire and Rubber Co
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Filing: 1994-07-01
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Granted: 1996-05-07
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Expires: 2014-07-01
Abstract
Abstract Springy fibers, when used as a fiber reinforcement in an elastomer, have been found to demonstrate reduced crack propagation in the elastomer. Springy fiber reinforced elastomers can be used in tires in various components.
Inventors
- 👤 Alfredo G. Causa
- 👤 Christina H. Obermaier
- 👤 Marc Borowczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:26
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0025; B60C1/0016; B60C9/00; B60C9/18; B60C9/1821; C; C08; C08L; C08L21/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10513
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
A pneumatic tire including a component comprising an elastomeric matrix material having dispersed therein about 1 to about 10 phr artificially crimped synthetic organic springy fibers having a length of about 100 to 12,000 um, a diameter of about 1.2 to 1,250 um and an aspect ratio of 25 to 1000, said springy fibers being selected from the group consisting of nylon, polyethlene, polypropylene, polyester and mixtures thereof.
Claim 2
Dependent Claim
68 words
A pneumatic tire including a component comprising an elastomeric matrix material having dispersed therein about 1 to about 10 phr artificially crimped synthetic organic springy fibers having a length of about 100 to 12,000 um, a diameter of about 1.2 to 1,250 um and an aspect ratio of 25 to 1000, said springy fibers being selected from the group consisting of nylon, polyethlene, polypropylene, polyester and mixtures thereof.
Claim 3
Dependent Claim
98 words
A pneumatic tire including a component comprising an elastomeric matrix material having dispersed therein about 1 to about 10 phr artificially crimped synthetic organic springy fibers having a length of about 100 to 12,000 um, a diameter of about 1.2 to 1,250 um and an aspect ratio of 25 to 1000, said springy fibers being selected from the group consisting of nylon, polyethylene, polypropylene, polyester and mixtures thereof, and in which said elastomeric matrix material is selected from the group consisting of polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber, EPDM rubber, nitrile rubber, halobutyl rubber, and mixtures thereof.
Claim 4
Dependent Claim
98 words
A pneumatic tire including a component comprising an elastomeric matrix material having dispersed therein about 1 to about 10 phr artificially crimped synthetic organic springy fibers having a length of about 100 to 12,000 um, a diameter of about 1.2 to 1,250 um and an aspect ratio of 25 to 1000, said springy fibers being selected from the group consisting of nylon, polyethylene, polypropylene, polyester and mixtures thereof, and in which said elastomeric matrix material is selected from the group consisting of polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber, EPDM rubber, nitrile rubber, halobutyl rubber, and mixtures thereof.
Claim 5
Dependent Claim
29 words
The tire according to claim 2 wherein said springy fibers comprise about 4 to about 8 parts by weight per 100 parts by weight of said elastomeric matrix material.
Claim 6
Dependent Claim
12 words
The tire according to claim 2, wherein said component is a sidewall.
Claim 7
Dependent Claim
13 words
The tire according to claim 2 wherein said component is a tread base.
Claim 8
Dependent Claim
12 words
The tire according to claim 2 wherein said component is an apex.
Claim 9
Dependent Claim
114 words
The tire of claim 2 wherein said elastomeric matrix material comprises a polyisoprene/polybutadiene rubber mixture reinforced with 40 to 60 phr carbon black and 4 to 8 phr springy nylon fiber, said matrix having a tensile modulus at 50% strain of 2.0 to 7.0 MPa, a cut growth rate under 30% dynamic shear strain of 0.5 to 0.9×10 2 mm/Mc, a hysteresis (as defined by the tangent of the phase angle at 50% strain) of 0.2 to 0.5, a molded groove tear strength of 13 to 22N, a tensile strength of about 10 to 12 MPa, an ultimate elongation of 400 to 500% and a Shore A hardness of about 60 to 65 points.
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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) | 1999-05-07 | 1999-11-06 | 2000-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-07 | 2003-11-06 | 2004-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-07 | 2007-11-06 | 2008-05-07 | $7700.00 | Window Closed / Lapsed |