US3757844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed radial tire
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1971-12-13
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Granted: 1973-09-11
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Expires: 1991-12-13
Abstract
Abstract The carcass reinforcement of a radial tire having a substantially cylindrical tread reinforcement meets the tread reinforcement tangentially at points of the tread reinforcement near or at the edges thereof, and the carcass and tread reinforcements are substantially in contact with each other over a width at least equal to the minimum width of the carcass reinforcement at the height of the bead wires. This permits continuous high-speed travel without danger of ply separation.
Inventors
- 👤 H Verdier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/28; B60C3/00; B60C3/04; B60C9/02; B60C9/0292; B60C9/04; B60C9/08; B60C9/20; B60C9/2003; B60C9/2006; B60C9/26; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A tire comprising a tread portion, a pair of sidewalls respectively extending radially inwardly from opposite edges of said tread portion, a pair of beads respectively at radially inner edges of said sidewalls, a pair of bead wires respectively in said beads, a carcass reinforcement comprising continuous, radially extending cords and having opposite edges respectively anchored on said bead wires and extending through said beads, sidewalls and tread portion, and a tread reinforcement, said carcass reinforcement, when the tire is inflated, following, between said beads and said tread reinforcement, its natural equilibrium profile, said tread reinforcement having a longitudinal curvature and a transverse curvature less than said longitudinal curvature, so that said tread reinforcement is substantially cylindrical, and being strengthened at its edges, and said carcass reinforcement and tread reinforcement meeting tangentially at the edges of said tread reinforcement and being substantially in contact with each other over the entire width of said tread reinforcement and a width at least equal to the minimum width of said carcass reinforcement at the height of said bead wires.
Claim 2
Dependent Claim
176 words
A tire comprising a tread portion, a pair of sidewalls respectively extending radially inwardly from opposite edges of said tread portion, a pair of beads respectively at radially inner edges of said sidewalls, a pair of bead wires respectively in said beads, a carcass reinforcement comprising continuous, radially extending cords and having opposite edges respectively anchored on said bead wires and extending through said beads, sidewalls and tread portion, and a tread reinforcement, said carcass reinforcement, when the tire is inflated, following, between said beads and said tread reinforcement, its natural equilibrium profile, said tread reinforcement having a longitudinal curvature and a transverse curvature less than said longitudinal curvature, so that said tread reinforcement is substantially cylindrical, and being strengthened at its edges, and said carcass reinforcement and tread reinforcement meeting tangentially at the edges of said tread reinforcement and being substantially in contact with each other over the entire width of said tread reinforcement and a width at least equal to the minimum width of said carcass reinforcement at the height of said bead wires.
Claim 3
Dependent Claim
87 words
A tire according to claim 1 wherein cos psi 1 R12 -Re2/Rs2 - Re2 R1 being the radius of the tire at the points where said carcass reinforcement and said tread reinforcement meet, psi being the angle between said carcass reinforcement and the axis of the tire at the points where said carcass reinforcement and said tread reinforcement meet, Rs being the maximum radius of said carcass reinforcement, and Re being the radius of the points of the carcass farthest from the median plane of the tire.
Claim 4
Dependent Claim
57 words
A tire according to claim 2 wherein cos psi 2 R22 -Re2/Rs2 - Re2 R2 being the radius of the tire at the points where said carcass reinforcement meets said beads, and psi 2 being the angle between said carcass reinforcement and the axis of the tire at the points where said carcass reinforcement meets said beads.
Claim 5
Dependent Claim
7 words
A tire according to claim 3 wherein
Claim 6
Dependent Claim
42 words
A tire according to claim 1 wherein 0.60 < H/B < 0.75 , H being the height of said carcass in the inflated condition of the tire, and B being the width of said carcass in the inflated condition of the tire.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |