US3774663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truck tire having carcass extension
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1971-09-30
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Granted: 1973-11-27
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Expires: 1991-09-30
Abstract
Abstract A pneumatic tire has a radial carcass formed of one or more plies of cords the ends of which are arranged near the steel wires in the beads. The carcass proper is extended in each bead by at least one additional ply or carcass extension adjacent to or encircling the bead wires and rising in the side. The cords of the additional ply or carcass extension are connected together by a connecting rubber of a grade different from that of the connecting rubber connecting the cords of the carcass proper.
Inventors
- 👤 J Montagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:52
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/08; B60C15/00; B60C15/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10819; Y10T152/10828; Y10T152/10837; Y10T152/10846
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A radial pneumatic tire comprising a pair of sidewalls, a pair of beads, at least one bead wire in each bead, a carcass proper, said carcass proper being of the radial type and comprising at least one ply of cords, and a connecting rubber connecting the cords of said carcass proper, said cords being respectively turned outwardly around said bead wires and the ends of said cords being respectively adjacent to said bead wires, said carcass proper being extended in each bead by a carcass extension adjacent a turned out carcass ply at the bead, said carcass extension ending beyond said beads but short of the middle of said sidewalls, said carcass extension comprising cords, further comprising a second connecting rubber connecting the cords of said carcass extension, said second connecting rubber having a modulus of elasticity higher than that of said rubber connecting the cords of said carcass proper.
Claim 2
Dependent Claim
150 words
A radial pneumatic tire comprising a pair of sidewalls, a pair of beads, at least one bead wire in each bead, a carcass proper, said carcass proper being of the radial type and comprising at least one ply of cords, and a connecting rubber connecting the cords of said carcass proper, said cords being respectively turned outwardly around said bead wires and the ends of said cords being respectively adjacent to said bead wires, said carcass proper being extended in each bead by a carcass extension adjacent a turned out carcass ply at the bead, said carcass extension ending beyond said beads but short of the middle of said sidewalls, said carcass extension comprising cords, further comprising a second connecting rubber connecting the cords of said carcass extension, said second connecting rubber having a modulus of elasticity higher than that of said rubber connecting the cords of said carcass proper.
Claim 3
Dependent Claim
23 words
A pneumatic tire according to claim 1 wherein the cords of said carcass extension are separate from the cords of said carcass proper.
Claim 4
Dependent Claim
23 words
A pneumatic tire according to claim 1 wherein the cords of said carcass extension are different from the cords of said carcass proper.
Claim 5
Dependent Claim
26 words
A pneumatic tire according to claim 1 wherein the cords of said carcass extension follow a path which is concave towards the outside of the tire.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |