US3677319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belted pneumatic tires
Assignee: Uniroyal SA
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Filing: 1970-07-23
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Granted: 1972-07-18
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Expires: 1990-07-23
Abstract
Abstract Belted pneumatic tires characterized by improved treadreinforcing breaker constructions are disclosed. In any such breaker, a single-section plural-layer non-metallic textile cord ply structure having the cords thereof oriented at a 0* angle to the median equatorial plane of the tire is combined with a plural-layer ply structure of metallic wires or strips which in each layer are crossed relative to those in the other layer and are oriented at a substantial bias angle, preferably between about 18* and 75*, to the said plane. The plural-layer textile cord ply structure, which may be located radially outwardly or inwardly of the metal ply structure or between the layers thereof, is constituted by a single length of breaker cord fabric wound in a continuous spiral circumferentially of the carcass for at least a plurality of full turns and is considerably narrower than the metal ply structure. Such tires are found to be possessed of good road-holding or cornering ability while affording good riding comfort. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.
Inventors
- 👤 Henri Mirtain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:36
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/30; B60C9/20; B60C9/2003; B60C9/2009; B60C9/22; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10801
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
338 words
In a pneumatic tire having a carcass, a non-separable tread surrounding the crown region of said carcass, sidewalls overlying the lateral regions of said carcass from the bead regions of the tire to the marginal regions of said tread, and a treadreinforcing breaker disposed circumferentially about the crown region of said carcass between the latter and said tread; said breaker consisting of a first plural-layer ply structure including elongated reinforcing elements made of metallic material, and a considerably narrower single-section second plural-layer ply structure including elongated reinforcing elements made of non-metallic textile material, said ply structures being arranged one in concentric superposed relation to the other, said metallic reinforcing elements in each layer of said first ply structure being oriented at a respective bias angle of between about 18* and 75* to the median equatorial plane of the tire and in crossing relation to the metallic reinforcing elements in each adjacent layer of said first ply structure, the width of the radially inwardmost layer of said first ply structure being at most equal to that of said tread, the width of any other layer of said first ply structure being at most equal to that of said radially inwardmost layer, said second ply structure in all layers thereof being continuous transversely of the tire from one lateral edge of said second ply structure to the other lateral edge thereof, said layers of said second ply structure being all of identical width and constituted by a single length of 0* textile breaker cord fabric extending circumferentially about the crown region of said carcass in a continuous spiral for at least a plurality of full turns, said non-metallic textile reinforcing elements in said second ply structure being oriented at an essentially 0* angle to the median equatorial plane of the tire, and the width of said second ply structure as measured from one of said lateral edges thereof to the other being between about one-fourth and three-fourths of the width of said radially inwardmost layer of said first ply structure.
Claim 2
Dependent Claim
338 words
In a pneumatic tire having a carcass, a non-separable tread surrounding the crown region of said carcass, sidewalls overlying the lateral regions of said carcass from the bead regions of the tire to the marginal regions of said tread, and a treadreinforcing breaker disposed circumferentially about the crown region of said carcass between the latter and said tread; said breaker consisting of a first plural-layer ply structure including elongated reinforcing elements made of metallic material, and a considerably narrower single-section second plural-layer ply structure including elongated reinforcing elements made of non-metallic textile material, said ply structures being arranged one in concentric superposed relation to the other, said metallic reinforcing elements in each layer of said first ply structure being oriented at a respective bias angle of between about 18* and 75* to the median equatorial plane of the tire and in crossing relation to the metallic reinforcing elements in each adjacent layer of said first ply structure, the width of the radially inwardmost layer of said first ply structure being at most equal to that of said tread, the width of any other layer of said first ply structure being at most equal to that of said radially inwardmost layer, said second ply structure in all layers thereof being continuous transversely of the tire from one lateral edge of said second ply structure to the other lateral edge thereof, said layers of said second ply structure being all of identical width and constituted by a single length of 0* textile breaker cord fabric extending circumferentially about the crown region of said carcass in a continuous spiral for at least a plurality of full turns, said non-metallic textile reinforcing elements in said second ply structure being oriented at an essentially 0* angle to the median equatorial plane of the tire, and the width of said second ply structure as measured from one of said lateral edges thereof to the other being between about one-fourth and three-fourths of the width of said radially inwardmost layer of said first ply structure.
Claim 3
Dependent Claim
26 words
A pneumatic tire according to claim 1, wherein the width of said second ply structure is about one-third of the width of said first ply structure.
Claim 4
Dependent Claim
39 words
A pneumatic tire according to claim 2, wherein said metallic reinforcing elements in each layer of said first ply structure are oriented at an angle of between about 20* and 45* to the median equatorial plane of the tire.
Claim 5
Dependent Claim
28 words
A pneumatic tire according to claim 3, wherein said second ply structure is disposed in circumferentially surrounding relation to at least a part of said firsT ply structure.
Claim 6
Dependent Claim
59 words
A pneumatic tire according to claim 4, wherein said first ply structure is constituted of two layers each of which is continuous transversely of the tire from one edge region of said tread to the other, and the radially inwardmost layer of said second ply structure is directly adjacent to the radially outwardmost layer of said first ply structure.
Claim 7
Dependent Claim
25 words
A pneumatic tire according to claim 5, wherein said second ply structure is disposed symmetrically with respect to the median equatorial plane of the tire.
Claim 8
Dependent Claim
25 words
A pneumatic tire according to claim 5, wherein said second ply structure is disposed asymmetrically with respect to the median equatorial plane of the tire.
Claim 9
Dependent Claim
43 words
A pneumatic tire according to claim 7, wherein said second ply structure is disposed with one of its lateral edges in substantially coinciding overlying relation to the proximate one of the lateral edges of said radially inwardmost layer of said first ply structure.
Claim 10
Dependent Claim
28 words
A pneumatic tire according to claim 3, wherein at least a part of said first ply structure is disposed in circumferentially surrounding relation to said second ply structure.
Claim 11
Dependent Claim
58 words
A pneumatic tire according to claim 9, wherein said first ply structure is constituted of two layers each of which is continuous transversely of the tire from one edge region of said tread to the other, and said radially inwardmost layer of said first ply structure is directly adjacent the radially outwardmost layer of said second ply structure.
Claim 12
Dependent Claim
51 words
A pneumatic tire according to claim 9, wherein said first ply structure is constituted of two layers each of which is continuous transversely of the tire from one edge region of said tread to the other, and said second ply structure is disposed between said layers of said first ply structure.
Claim 13
Dependent Claim
63 words
A pneumatic tire according to claim 4, wherein said first ply structure is constituted of two layers one of which is continuous and the other discontinuous transversely of the tire from one edge region of said tread to the other, and the radially inwardmost layer of said second ply structure is directly adjacent to the radially outwardmost layer of said first ply structure.
Claim 14
Dependent Claim
48 words
A pneumatic tire according to claim 12, wherein said radially inwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being narrower than said second ply structure, and the latter being positioned in straddling relation to said gap.
Claim 15
Dependent Claim
48 words
A pneumatic tire according to claim 12, wherein said radially outwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being narrower than said second ply structure, and the latter being positioned in straddling relation to said gap.
Claim 16
Dependent Claim
79 words
A pneumatic tire according to claim 4, wherein said radially outwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being substantially equal in width to said second ply structure, the latter being positioned within the confines of said gap and substantially fully occupying the same, and the radially inwardmost layer of said second ply structure being disposed directly adjacent said radially inwardmost layer of said first ply structure.
Claim 17
Dependent Claim
77 words
A pneumatic tire according to claim 4, wherein said radially outwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being greater in width than said second ply structure, the latter being positioned within the confines of said gap and partly occupying the same, and the radially inwardmost layer of said second ply structure being disposed directly adjacent said radially inwardmost layer of said first ply structure.
Claim 18
Dependent Claim
20 words
A pneumatic tire according to claim 16, wherein said second ply structure is disposed symmetrically with respect to said gap.
Claim 19
Dependent Claim
20 words
A pneumatic tire according to claim 16, wherein said second ply structure is disposed asymmetrically with respect to said gap.
Claim 20
Dependent Claim
65 words
A pneumatic tire according to claim 9, wherein said first ply structure is constituted of two layers one of which is continuous and the other discontinuous transversely of the tire from one edge region of said tread to the other, and said second ply structure is disposed in at least partly bridging relation to the gap between the laterally adjacent sections of said discontinuous layer.
Claim 21
Dependent Claim
37 words
A pneumatic tire according to claim 19, wherein said radially inwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being narrower than said second ply structure.
Claim 22
Dependent Claim
79 words
A pneumatic tire according to claim 19, wherein said radially inwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being substantially equal in width to said second ply structure, the latter being positioned within the confines of said gap and substantially fully occupying the same, and the radially outwardmost layer of said second ply structure being disposed directly adjacent said radially outwardmost layer of said first ply structure.
Claim 23
Dependent Claim
77 words
A pneumatic tire according to claim 19, wherein said radially inwardmost layer of said first ply structure is discontinuous, the gap between the laterally adjacent sections of said discontinuous layer being greater in width than said second ply structure, the latter being positioned within the confines of said gap and partly occupying the same, and the radially outwardmost layer of said second ply structure being disposed directly adjacent said radially outwardmost layer of said first ply structure.
Claim 24
Dependent Claim
20 words
A pneumatic tire according to claim 22, wherein said second ply structure is disposed symmetrically with respect to said gap.
Claim 25
Dependent Claim
20 words
A pneumatic tire according to claim 22, wherein said second ply structure is disposed asymmetrically with respect to said gap.
Claim 26
Dependent Claim
41 words
A pneumatic tire according to claim 3, wherein said first ply structure is constituted of two layers in one of which the respective metallic reinforcing elements are lamelliform and in the other of which the respective metallic reinforcing elements are filiform.
Claim 27
Dependent Claim
68 words
A pneumatic tire according to claim 3, wherein said first ply structure is constituted of two layers one of which is continuous and the other discontinuous transversely of the tire from one edge region of said tread to the other, the respective metallic reinforcing elements in said continuous layer being filiform, and the respective metallic reinforcing elements in at least one section of said discontinuous layer being lamelliform.
Claim 28
Dependent Claim
37 words
A pneumatic tire according to claim 26, wherein said metallic reinforcinG elements in one of said sections of said discontinuous layer are oriented at a different bias angle than said metallic reinforcing elements in the other section.
Claim 29
Dependent Claim
69 words
A pneumatic tire according to claim 3, wherein said first ply structure is constituted of two layers one of which is continuous and the other discontinuous transversely of the tire from one edge region of said tread to the other, said metallic reinforcing elements in one of said sections of said discontinuous layer being oriented at a different bias angle than said metallic reinforcing elements in the other section.
Claim 30
Dependent Claim
29 words
A pneumatic tire according to claim 28, wherein the two different bias angles are equal numerically but opposite in sense relative to the median equatorial plane of the tire.
Claim 31
Dependent Claim
30 words
A pneumatic tire according to claim 28, wherein the two different bias angles are unequal numerically but in the same sense relative to the median equatorial plane of the tire.
Claim 32
Dependent Claim
29 words
A pneumatic tire according to claim 28, wherein the two different bias angles are unequal numerically and opposite in sense relative to the median equatorial plane of the tire.
Claim 33
Dependent Claim
40 words
A pneumatic tire according to claim 1, whErein said non-metallic textile reinforcing elements in said second ply structure are made of synthetic filaments of a material selected from the group consisting of glass fiber, nylon, rayon, polyester and the like.
Claim 34
Dependent Claim
58 words
A pneumatic tire according to claim 32, wherein said second ply structure extends about said crown region of said carcass for a small amount more than two full turns sufficient to create an overlap of between about 10 and 30 mm of the outermost terminal section of said breaker cord fabric relative to the innermost terminal section thereof.
Claim 35
Dependent Claim
66 words
A pneumatic tire according to claim 1, wherein said metallic reinforcing elements in at least a part of one layer of said first ply structure are thin flat strips or bands of steel each between about 0.12 and 0.40 mm thick and between about 1 and 3 mm wide, with adjacent ones of said strips or bands being spaced between about 0.5 and 1 mm apart.
Claim 36
Dependent Claim
63 words
A pneumatic tire according to claim 1, wherein said metallic reinforcing elements in at least a part of one layer of said first ply structure are round steel wires or cables each having an effective diameter between about 0.25 and 2.5 mm, with adjacent ones of said wires or cables being spaced between about one-half and one full wire or cable diameter apart.
References Cited (Backward Citations)
US3503432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |