US3789900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tires
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1972-06-09
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Granted: 1974-02-05
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Expires: 1992-06-09
Abstract
Abstract A tire of reduced weight and greater strength is obtained by restraining the radial carcass on the inside by means of a shoulder ply arranged on the inside of the carcass at each end of the crown reinforcement so as to impart a nearly rectangular meridian profile to the carcass.
Inventors
- 👤 H Verdier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/28; B60C3/00; B60C3/04; B60C9/02; B60C9/04; B60C9/08; B60C9/09; B60C9/20; B60C9/2003; B60C9/2006; B60C9/2009; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10801; Y10T152/10855; Y10T152/10864
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A tire comprising a continuous carcass formed of radial wires or cords and a crown plied reinforcement which reinforces the tread, has a slightly curved meridian profile and restrains the carcass on the outside, characterized by the fact that the carcass is restrained on the inside by at least one shoulder ply of elastic wires or cords forming an angle of at most 30* with respect to the radial wires or cords of the carcass, said shoulder ply being separately arranged on the inside of the carcass at each end of the crown plied reinforcement, whereby the meridian profile of the carcass is raised in the direction of the crown plied reinforcement.
Claim 2
Dependent Claim
112 words
A tire comprising a continuous carcass formed of radial wires or cords and a crown plied reinforcement which reinforces the tread, has a slightly curved meridian profile and restrains the carcass on the outside, characterized by the fact that the carcass is restrained on the inside by at least one shoulder ply of elastic wires or cords forming an angle of at most 30* with respect to the radial wires or cords of the carcass, said shoulder ply being separately arranged on the inside of the carcass at each end of the crown plied reinforcement, whereby the meridian profile of the carcass is raised in the direction of the crown plied reinforcement.
Claim 3
Dependent Claim
27 words
The tire as defined by claim 1 wherein the carcass is restrained on the inside by two shoulder plies of elastic wires or cords having opposite angularity.
Claim 4
Dependent Claim
43 words
The tire as defined by claim 1 wherein the elastic wires or cords of said shoulder ply which restrains the carcass on the inside form an angle of between 10* and 20* with respect to the radial wires or cords of the carcass.
Claim 5
Dependent Claim
34 words
The tire as defined by claim 1 wherein the said shoulder ply of elastic wires or cords extends substantially over the same width on either side of each edge of the crown plied reinforcement.
Claim 6
Dependent Claim
32 words
The tire as defined by claim 1 wherein the said shoulder ply of elastic wires or cords has a width substantially equal to one-half of the width of the widest crown ply.
Claim 7
Dependent Claim
21 words
The tire as defined by claim 1 wherein the elastic wires or cords of the shoulder ply consist of synthetic fibers.
Claim 8
Dependent Claim
63 words
The tire as defined by claim 1 wherein the carcass has a substantially rectangular meridian profile comprising a central portion covered by the crown reinforcement and spaced only slightly from it and two lateral portions substantially parallel to the median plane and also only slightly curved, the central portion and the lateraL portions being connected by strongly curved connections of small developed length.
Claim 9
Dependent Claim
35 words
The tire as defined by claim 1 wherein the tread has a width substantially equal to that of the carcass and a distance from the carcass substantially constant at all points of its outer surface.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |