Patent US1780264A successfully refreshed from Google Patents.
US3667529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed radial ply tires
Assignee: UNIROYAL
•
Filing: 1970-05-20
•
Granted: 1972-06-06
•
Expires: 1990-05-20
Abstract
Abstract Radial ply pneumatic tires capable of being run at very high speeds are disclosed. Such tires are characterized by a treadreinforcing breaker having a plural-layer non-metallic textile cord ply structure wider than the tread, with the cords oriented at a O* angle to the median equatorial plane, and a single-layer ply structure, narrower than the tread, of metallic wires or strips oriented at a substantial bias angle, preferably between about 20* and 45*, to the said plane. The plural-layer ply structure 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. If the metal ply structure in such a tire is superposed onto the textile ply structure, the tire is additionally provided with means indicating the manner in which it should be mounted on a vehicle so as to have a specified direction of rotation during normal high speed forward movement of the vehicle.
Inventors
- 👤 Henri Mirtain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C9/2003; B60C9/2009; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10792
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
279 words
A pneumatic tire capable of being run at very high speeds, comprising a radial ply carcass, a tread surrounding the crown region of the carcass, sidewalls overlying the lateral regions of the carcass from the bead regions of the tire to the marginal regions of said tread, and a tread-reinforcing breaker disposed circumferentially about the crown region of the carcass between the latter and said tread, said breaker being constituted by a single-layer ply structure including elongated reinforcing elements made of metallic material and by a plural-layer ply structure including elongated reinforcing elements made of nonmetallic textile material, said ply structures being arranged one in superposed relation to the other, said metallic reinforcing elements in said single-layer ply structure being oriented at a bias angle of between about 14* and 70* to the median equatorial plane of the tire, said Plural-layer ply structure being constituted by a single length of textile breaker cord fabric extending circumferentially about the crown region of the carcass in a continuous spiral for at least a plurality of full turns, said non-metallic textile reinforcing elements in said plurallayer ply structure being oriented at an essentially 0* angle to the median equatorial plane of the tire, the width of said single-layer ply structure being at most equal to that of said tread, and the width of said plural-layer ply structure being a predetermined amount greater than that of said tread so that the lateral marginal regions of said plural-layer ply structure are disposed in the radially outwardmost portions of the respective sidewall regions of the tire without any undesirable crimping of said non-metallic textile reinforcing elements in said marginal regions of said plural-layer ply structure.
Claim 2
Dependent Claim
279 words
A pneumatic tire capable of being run at very high speeds, comprising a radial ply carcass, a tread surrounding the crown region of the carcass, sidewalls overlying the lateral regions of the carcass from the bead regions of the tire to the marginal regions of said tread, and a tread-reinforcing breaker disposed circumferentially about the crown region of the carcass between the latter and said tread, said breaker being constituted by a single-layer ply structure including elongated reinforcing elements made of metallic material and by a plural-layer ply structure including elongated reinforcing elements made of nonmetallic textile material, said ply structures being arranged one in superposed relation to the other, said metallic reinforcing elements in said single-layer ply structure being oriented at a bias angle of between about 14* and 70* to the median equatorial plane of the tire, said Plural-layer ply structure being constituted by a single length of textile breaker cord fabric extending circumferentially about the crown region of the carcass in a continuous spiral for at least a plurality of full turns, said non-metallic textile reinforcing elements in said plurallayer ply structure being oriented at an essentially 0* angle to the median equatorial plane of the tire, the width of said single-layer ply structure being at most equal to that of said tread, and the width of said plural-layer ply structure being a predetermined amount greater than that of said tread so that the lateral marginal regions of said plural-layer ply structure are disposed in the radially outwardmost portions of the respective sidewall regions of the tire without any undesirable crimping of said non-metallic textile reinforcing elements in said marginal regions of said plural-layer ply structure.
Claim 3
Dependent Claim
38 words
A pneumatic tire according to claim 1, wherein the total width of said plural-layer ply structure is at least 20 mm greater, distributed symmetrically of the median equatorial plane of the tire, than the width of said tread.
Claim 4
Dependent Claim
38 words
A pneumatic tire according to claim 1, wherein the total width of said single-layer ply structure is at most 20 mm less, distributed symmetrically of the median equatorial plane of the tire, than the width of said tread.
Claim 5
Dependent Claim
38 words
A pneumatic tire according to claim 3, wherein the total width of said plural-layer ply structure is at least 20 mm greater, distributed symmetrically of the median equatorial plane of the tire, than the width of said tread.
Claim 6
Dependent Claim
58 words
A pneumatic tire according to claim 1, wherein said metallic reinforcing elements in said single-layer 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 7
Dependent Claim
56 words
A pneumatic tire according to claim 1, wherein said metallic reinforcing elements in said single-layer 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.
Claim 8
Dependent Claim
36 words
A pnuematic tire according to claim 1, wherein said metallic reinforcing elements in said single-layer ply structure are oriented at an angle of between about 20* and 45* to the median equatorial plane of the tire.
Claim 9
Dependent Claim
23 words
A pneumatic tire according to claim 1, wherein said plural-layer ply structure is disposed in circumferentially surrounding relation to said single-layer ply structure.
Claim 10
Dependent Claim
23 words
A pneumatic tire according to claim 1, wherein said single-layer ply structure is disposed in circumferentially surrounding relation to said plural-layer ply structure.
Claim 11
Dependent Claim
81 words
A pneumatic tire according to claim 9, further comprising means associated with the tire for indicating the manner in which the same should be mounted on a vehicle so as to ensure that upon forward movement of the latter, the lateral thrust generated by the tire due to the interaction of said metallic reinforcing elements in said single-layer ply structure with the road surface over which the tire is rolling, is oriented in the proper direction with respect to the vehicle.
Claim 12
Dependent Claim
40 words
A pneumatic tire according to claim 1, wherein said non-metallic textile reinforcing elements in said plural-layer 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 13
Dependent Claim
19 words
A pneumatic tire according to claim 11, wherein said non-metallic reinforcing elements are made of nylon, rayon, or polyester.
Claim 14
Dependent Claim
21 words
A pneumatic tire according to claim 12, wherein said metallic reinforcing elements in said single-layer ply structure are made of steel.
Claim 15
Dependent Claim
57 words
A pneumatic tire according to claim 13, wherein said plural-layer ply structure eXtends about said crown region of said carcass for a small amount more than said number of full turns sufficient to create an overlap of about 20 mm of the outermost terminal section of said breaker cord fabric relative to the innermost terminal section thereof.
Claim 16
Dependent Claim
55 words
A pneumatic tire according to claim 14, wherein said steel reinforcing elements are in the form of thin flat strips or bands 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 17
Dependent Claim
54 words
A pneumatic tire according to claim 14, wherein said steel reinforcing elements are in the form of round 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.
Claim 18
Dependent Claim
26 words
A pneumatic tire according to claim 14, wherein said plural-layer ply structure includes three full turns of said breaker cord fabric in addition to said overlap.
Claim 19
Dependent Claim
55 words
A pneumatic tire according to claim 17, wherein said steel reinforcing elements are in the form of thin flat strips or bands 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 20
Dependent Claim
54 words
A pneumatic tire according to claim 17, wherein said steel reinforcing elements are in the form of round 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.
Claim 21
Dependent Claim
26 words
A pneumatic tire according to claim 14, wherein said plural-layer ply structure includes two full turns of said breaker cord fabric in addition to said overlap.
Claim 22
Dependent Claim
55 words
A pneumatic tire according to claim 20, wherein said steel reinforcing elements are in the form of thin flat strips or bands 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 23
Dependent Claim
54 words
A pneumatic tire according to claim 20, wherein said steel reinforcing elements are in the form of round 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.
Claim 24
Dependent Claim
21 words
A pneumatic tire according to claim 1, wherein said plural-layer ply structure includes two full turns of said breaker cord fabric.
Claim 25
Dependent Claim
21 words
A pneumatic tire according to claim 1, wherein said plural-layer ply structure includes three full turns of said breaker cord fabric.
Claim 26
Dependent Claim
57 words
A pneumatic tire according to claim 1, wherein said plural-layer ply structure extends about said crown region of said carcass for a small amount more than said number of full turns sufficient to create an overlap of about 20 mm of the outermost terminal section of said breaker cord fabric relative to the innermost terminal section thereof.
Claim 27
Dependent Claim
26 words
A pneumatic tire according to claim 25, wherein said plural-layer ply structure includes three full turns of said breaker cord fabric in addition to said overlap.
Claim 28
Dependent Claim
26 words
A pneumatic tire according to claim 25, wherein said plural-layer ply structure includes two full turns of said breaker cord fabric in addition to said overlap.
References Cited (Backward Citations)
US2826233A
Cited
US2939502A
Cited
FR1140534A
Cited
US3126042A
Cited
US3240249A
Cited
US3481386A
Cited
US3516465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |