US4176705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire cord with a synthetic fiber core
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1977-09-15
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Granted: 1979-12-04
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Expires: 1997-09-15
Abstract
Abstract A composite cord used in the reinforcement of pneumatic tires is composed of a plurality of twisted steel strands cabled around a multifilament core.
Inventors
- 👤 C. Paul Russell
- 👤 Joseph M. Gingo
- 👤 Oswald A. Drica-Minieris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:59
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/48; B; B60; B60C; B60C9/00; B60C9/0042; B60C9/005; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0613; D07B2201/00; D07B2201/10; D07B2201/1012; D07B2201/102; D07B2201/1028; D07B2201/1032; D07B2201/104; D07B2201/1064; D07B2201/1076; D07B2201/20; D07B2201/2015; D07B2201/2022; D07B2201/2024; D07B2201/2038; D07B2201/2039; D07B2201/2047; D07B2201/2052; D07B2201/2055; D07B2201/2057; D07B2201/2058; D07B2205/00; D07B2205/20; D07B2205/2046; D07B2205/205; D07B2401/00; D07B2401/20; D07B2401/2005; D07B2401/202; D07B2401/2025; D07B2401/208; D07B2501/00; D07B2501/20; D07B2501/2046
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A composite cord for a tire having a body of corrosion-resistant material, comprising a plurality of metal strands having equal diameters and tensile strengths and a centrally disposed unreinforced non-metallic core having a generally circular cross section around which said strands are cabled, said core having a diameter at least equal to the diameter of each of said metal strands and sufficient to hold said metal strands in a spread condition so that said corrosion-resistant material covers and adheres to said strands to prevent exposure of said metal strands to moisture, and said core having a tensile strength substantially equal to the tensile strength of any one of said metal strands so as to maintain said strands in said spread condition under tension and carry a proportional amount of the load imparted to said strands and said core.
Claim 2
Dependent Claim
138 words
A composite cord for a tire having a body of corrosion-resistant material, comprising a plurality of metal strands having equal diameters and tensile strengths and a centrally disposed unreinforced non-metallic core having a generally circular cross section around which said strands are cabled, said core having a diameter at least equal to the diameter of each of said metal strands and sufficient to hold said metal strands in a spread condition so that said corrosion-resistant material covers and adheres to said strands to prevent exposure of said metal strands to moisture, and said core having a tensile strength substantially equal to the tensile strength of any one of said metal strands so as to maintain said strands in said spread condition under tension and carry a proportional amount of the load imparted to said strands and said core.
Claim 3
Dependent Claim
12 words
The reinforcement of claim 1, wherein the core is composed of aramid.
Claim 4
Dependent Claim
26 words
The reinforcement of claim 2, wherein the metal strands are steel, and each of the strands comprise a plurality of individual wires which are cabled together.
Claim 5
Dependent Claim
152 words
A tire having a body of corrosion-resistant material comprising at least one layer of cords reinforcing the tire, each of said cords of said layer consisting of a plurality of metal strands having equal diameters and tensile strengths and a centrally disposed unreinforced non-metallic core having a generally circular cross section around which the strands are cabled, said core having a diameter at least equal to the diameter of each of said metal strands and sufficient to hold said metal strands in a spread condition so that said corrosion-resistant material covers and adheres to said strands to prevent exposure of said metal strands to moisture, and said core having a tensile strength substantially equal to the tensile strength of any one of said metal strands so as to maintain said strands in said spread condition under tension and carry a proportional amount of the load imparted to said strands and said core.
Claim 6
Dependent Claim
152 words
A tire having a body of corrosion-resistant material comprising at least one layer of cords reinforcing the tire, each of said cords of said layer consisting of a plurality of metal strands having equal diameters and tensile strengths and a centrally disposed unreinforced non-metallic core having a generally circular cross section around which the strands are cabled, said core having a diameter at least equal to the diameter of each of said metal strands and sufficient to hold said metal strands in a spread condition so that said corrosion-resistant material covers and adheres to said strands to prevent exposure of said metal strands to moisture, and said core having a tensile strength substantially equal to the tensile strength of any one of said metal strands so as to maintain said strands in said spread condition under tension and carry a proportional amount of the load imparted to said strands and said core.
Claim 7
Dependent Claim
12 words
The tire of claim 4, wherein the core is composed of aramid.
Claim 8
Dependent Claim
20 words
The tire of claim 4, wherein the layer of said cords reinforces at least one carcass ply of the tire.
Claim 9
Dependent Claim
21 words
The tire of claim 4, wherein the layer of said cords reinforces at least one annular belt ply of the tire.
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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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |