Claims
- 1. A reinforced ply of elastomer having a cord of two twisted filaments each filament of less than 0.34 millimeters diameter made from steel with a carbon content by weight of 0.7 to 0.90 percent, said ply having at least 8.66 cords per centimeter spaced in a direction lateral to the direction of reinforcement of the ply.
- 2. The reinforced ply defined in claim 1 wherein said cord diameter has a range of 0.25 to 0.68 millimeters.
- 3. The reinforced ply defined in claim 1 wherein said cord has a lay length of 20 to 100 times the filament diameter.
- 4. The reinforced ply defined in claim 1 wherein the lay length of said cord is 10 to 16 millimeters.
- 5. A reinforced composite structure comprising an elastomeric body, a plurality of individual, twisted filament reinforcing cords of a diameter from 0.25 to 0.68 millimeters, said cords being laterally spaced at 8.66 to 11.02 cords per centimeter in said body and said body having a modulus greater than 120 MPa.
- 6. The reinforced composite structure defined in claim 5 wherein each said cord has a lay length of 20 to 100 times the filament diameter.
- 7. The reinforced composite structure defined in claim 5 wherein said cords are comprised of two single filaments.
- 8. The reinforced composite structure defined in claims 5 or 7 wherein said filaments have a diameter of less than 0.34 millimeters.
- 9. The reinforced composite structure of claims 5 or 6 wherein the lay length of said cord is 14 millimeters.
- 10. A reinforced composite structure comprising an elastomeric body, a plurality of individual, twisted filament reinforcing cords, said cords having a Tabor stiffness of less than 60 grams, said ply having a critical load greater than 19.8 MPa and a critical strain not exceeding 11.0 percent.
- 11. The reinforced composite structure defined in claim 10 wherein the critical load range is from 19.8 to 23.8 MPa.
- 12. The reinforced composite structure defined in claim 10 wherein the critical strain range is from 9.0 to 11.0 percent.
- 13. A reinforced composite structure comprising an elastomeric body, a plurality of individual, twisted filament reinforcing cords, said cords having a Tabor stiffness of less than 60 grams and a modulus greater than 190 GPa and a filament diameter less than 0.34 mm.
- 14. The reinforced composite structure defined in claim 13 wherein the cords have a diameter of less than 0.68 mm.
- 15. A reinforced composite structure comprising an elastomeric body, a plurality of individual, twisted filament reinforcing cords, said cords having a fialment diameter of less than 0.34 mm and a cord modulus greater than 190 GPa and said ply capable of 2,000,000 or more cycles at a maximum load of 16.9 MPa and a frequency of 10 cycles/sec.
- 16. A reinforced composite structure comprising an elastomeric body, cords of two twisted filaments, said cords spaced parallel to each other in a plane forming the structure with a ratio of actual to nominal rivet of 1.94 between points on the cords which are a quarter lay length apart along the length of the cords and capable of satisfactory rubber-cord adhesion at a nominal rivet of 0.53 times the cord diameter.
- 17. The reinforced ply and structure defined in claims 1, 5, 10 or 16 wherein said cords have an average flare length of 8 mm one minute after cutting the ends thereof.
Parent Case Info
This is a division of application Ser. No. 133,169, filed Dec. 11, 1987, which is a continuation of application Ser. No. 836,934, filed Mar. 6, 1986, now abandoned.
Foreign Referenced Citations (5)
Number |
Date |
Country |
4317172 |
Jun 1972 |
AUX |
2090483 |
Nov 1983 |
AUX |
2406284 |
Nov 1984 |
AUX |
A157716 |
Oct 1985 |
EPX |
103093 |
Dec 1981 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
133169 |
Dec 1987 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
836934 |
Mar 1986 |
|