Patent US3783926A successfully refreshed from Google Patents.
US3783926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire having two-ply carcass merging into one ply
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1972-04-26
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Granted: 1974-01-08
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Expires: 1992-04-26
Abstract
Abstract A tire carcass is formed of a pair of plies adjacent to each other and extending through the tire from one bead to the other. Each ply comprises cords arranged with the same pitch and along the same direction, and the cords of each ply are staggered with respect to those of the other by half the pitch. The cords of the two plies, in regions of the carcass close to the beads, are located respectively at different distances from the inner wall of the tire. Successive cords of each ply, in regions of the carcass between the midheights of the two sidewalls, are inserted between adjacent cords of the other ply, so that the cords of the two plies, in regions of the carcass between the midheights of the two sidewalls, are located substantially at the same distance from the inner wall of the tire.
Inventors
- 👤 Zarauz Y De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:46
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/08; B29D30/20; B29D30/30; B29D30/3007; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/08; B60C9/16; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855; Y10T152/10873
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
198 words
A tire comprising an annular tread portion, a pair of sidewalls respectively extending radially inwardly from opposite edges of the tread portion, a pair of shoulders respectively at the junctions of the tread portion and the sidewalls, a pair of beads respectively at the radially inner edges of the sidewalls, and a carcass formed of at least one pair of plies adjacent to each other and extending through the tire from one bead to the other, each ply comprising cords arranged with the same pitch and along the same direction, the cords of each ply being staggered with respect to those of the other by half the pitch, the cords of the two plies, in regions of the carcass close to the beads, being located respectively at different distances from the inner wall of the tire, and successive cords of each ply, in regions of the carcass between the midheights of the two sidewalls, being inserted between adjacent cords of the other ply, so that the cords of the two plies, in said regions of the carcass between the midheights of the two sidewalls, are located substantially at the same distance from the inner wall of the tire.
Claim 2
Dependent Claim
198 words
A tire comprising an annular tread portion, a pair of sidewalls respectively extending radially inwardly from opposite edges of the tread portion, a pair of shoulders respectively at the junctions of the tread portion and the sidewalls, a pair of beads respectively at the radially inner edges of the sidewalls, and a carcass formed of at least one pair of plies adjacent to each other and extending through the tire from one bead to the other, each ply comprising cords arranged with the same pitch and along the same direction, the cords of each ply being staggered with respect to those of the other by half the pitch, the cords of the two plies, in regions of the carcass close to the beads, being located respectively at different distances from the inner wall of the tire, and successive cords of each ply, in regions of the carcass between the midheights of the two sidewalls, being inserted between adjacent cords of the other ply, so that the cords of the two plies, in said regions of the carcass between the midheights of the two sidewalls, are located substantially at the same distance from the inner wall of the tire.
Claim 3
Dependent Claim
16 words
A Tire according to claim 1 wherein the cords lie in radial planes of the tire.
Claim 4
Dependent Claim
19 words
A tire according to claim 1 wherein the cords are made of a material of high modulus of elasticity.
Claim 5
Dependent Claim
13 words
A tire according to claim 3 wherein the cords are made of steel.
Claim 6
Dependent Claim
45 words
A tire according to claim 1 comprising rubber, which forms bridges between the cords, the width of the rubber bridges between adjacent cords at the shoulders being substantially equal to the width of the rubber bridges between adjacent cords of either ply in the beads.
Claim 7
Dependent Claim
36 words
A tire according to claim 1 comprising rubber, which forms bridges between the cords, the width of the rubber bridges between adjacent cords at the shoulders being between one-fourth and three-fourths the diameter of the cords.
Claim 8
Dependent Claim
69 words
A tire according to claim 1 comprising rubber, which forms bridges between the cords, characterized in that, at all points of the carcass, the width of the rubber bridges between adjacent cords which are at the same distance from the inner wall of the tire is within the range of a value which is a fraction of a cord diameter to a value which slightly exceeds a cord diameter.
References Cited (Backward Citations)
US3500888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |