Patent US3757843A successfully refreshed from Google Patents.
US3757843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belted pneumatic tire
Assignee: Uniroyal Goodrich Tire Co
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Filing: 1971-04-23
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Granted: 1973-09-11
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Expires: 1991-04-23
Abstract
Abstract A pneumatic tire such as a radial cord tire has a constricting peripheral belt under the tread containing plies of cords at small angles to the central plane of the tire, with a central ply, preferably narrower than the other, containing cords of a higher modulus than those of the plies above and below it. Preferably, the plies above and below the central ply of the belt are folded so that the cords of two adjacent plies at opposite angles are continuous from one ply through the fold to the other ply. It is also preferred that the outermost belt ply have the cords at an angular direction opposite to the high modulus belt ply. The belt construction is also useful on a tire having the carcass cords extending at bias angles.
Inventors
- 👤 R Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/26; B60C9/20; B60C9/2003; B60C9/2009; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10792
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
200 words
A belted pneumatic tire comprising a carcass reinforced with cords lying approximately in radial planes, a wear resisting tread, and a belt having approximately the same width as the tread located between the carcass and the tread, the belt comprising a middle belt ply of high modulus cords and other belt plies of lower modulus cords above and below the middle belt ply, all extending across the major part of the width of the belt, with at least some of the other belt plies projecting laterally beyond the middle belt on each side, the cords of the middle belt ply having a modulus on a volume basis which is at least twice the moDulus of the cords of the other belt plies, and the cords of the other belt plies having a modulus on a volume basis not less than of the order of the modulus of rayon cords, the cords of all of the belt plies being at a small angle to the central plane with the cords of some of the belt plies being at one angular direction with respect to the central plane and the cords of the remaining belt plies being at the opposite angular direction.
Claim 2
Dependent Claim
200 words
A belted pneumatic tire comprising a carcass reinforced with cords lying approximately in radial planes, a wear resisting tread, and a belt having approximately the same width as the tread located between the carcass and the tread, the belt comprising a middle belt ply of high modulus cords and other belt plies of lower modulus cords above and below the middle belt ply, all extending across the major part of the width of the belt, with at least some of the other belt plies projecting laterally beyond the middle belt on each side, the cords of the middle belt ply having a modulus on a volume basis which is at least twice the moDulus of the cords of the other belt plies, and the cords of the other belt plies having a modulus on a volume basis not less than of the order of the modulus of rayon cords, the cords of all of the belt plies being at a small angle to the central plane with the cords of some of the belt plies being at one angular direction with respect to the central plane and the cords of the remaining belt plies being at the opposite angular direction.
Claim 3
Dependent Claim
28 words
A tire as in claim 1 in which the radially outermost belt ply is at the opposite angular direction from the middle belt ply of high modulus cords.
Claim 4
Dependent Claim
16 words
A tire as in claim 1 in which the cords of the carcass are radial cords.
Claim 5
Dependent Claim
28 words
A tire as in claim 3 in which the radially outermost belt ply is at the opposite angular direction from the middle belt ply of high modulus cords.
Claim 6
Dependent Claim
25 words
A tire as in claim 3 in which the middle belt ply is of steel cords and the other belt plies are of rayon cords.
Claim 7
Dependent Claim
26 words
A tire as in claim 3 in which the other belt plies project laterally beyond the middle belt ply above and below and on each side.
Claim 8
Dependent Claim
70 words
A tire as in claim 3 in which a pair of belt plies located radially inward of the middle belt ply is of one piece and has a circumferential fold located approximately below one shoulder of the tread, and a pair of belt plies located radially outward of the middle belt ply is of one piece and has a circumferential fold located approximately below the other shoulder of the tread.
Claim 9
Dependent Claim
56 words
A tire as in claim 7 in which the middle belt ply is of steel cords, the other belt plies are of rayon cords and project laterally beyond the middle belt ply above and below and on each side, and the radially outermost belt ply is at the opposite angular direction from the middle belt ply.
Claim 10
Dependent Claim
38 words
A tire as in claim 8 in which the laterally outermost projections of the belt on each side are the folds in the pairs of belt plies located radially inward and radially outward of the middle belt ply
Claim 11
Dependent Claim
233 words
A belted pneumatic tire comprising a radial cord reinforced carcass, a wear resisting tread, and a belt having approximately the same width as the tread located between the carcass and the tread, the belt consisting of a ply of metallic cords with the individual cords extending parallel to each other and at an angle of about 15* to 40* to the central plane of the tire, a pair of textile cord plies radially inwardly and a pair of textile cord plies radially outwardly of the ply of metallic cords with the individual textile cords extending parallel each other and at an angle of about 15* to 30* to the central plane of the tire, each pair of textile cord plies being of one piece with a circumferential fold at about the center of its width, the folded edge of one pair of textile cord plies being the laterally outermost edge of the belt on one side and the folded edge of the other pair being the outermost edge of the belt on the other side, an opposing edge of a textile cord ply being laterally outward of an edge of the ply of metallic cords and inward of the folded edge of the other pair of textile cord plies on each side, with the angular direction of the outermost textile cord ply opposite to the angular direction of the ply of metallic cords.
Claim 12
Dependent Claim
233 words
A belted pneumatic tire comprising a radial cord reinforced carcass, a wear resisting tread, and a belt having approximately the same width as the tread located between the carcass and the tread, the belt consisting of a ply of metallic cords with the individual cords extending parallel to each other and at an angle of about 15* to 40* to the central plane of the tire, a pair of textile cord plies radially inwardly and a pair of textile cord plies radially outwardly of the ply of metallic cords with the individual textile cords extending parallel each other and at an angle of about 15* to 30* to the central plane of the tire, each pair of textile cord plies being of one piece with a circumferential fold at about the center of its width, the folded edge of one pair of textile cord plies being the laterally outermost edge of the belt on one side and the folded edge of the other pair being the outermost edge of the belt on the other side, an opposing edge of a textile cord ply being laterally outward of an edge of the ply of metallic cords and inward of the folded edge of the other pair of textile cord plies on each side, with the angular direction of the outermost textile cord ply opposite to the angular direction of the ply of metallic cords.
References Cited (Backward Citations)
US3126042A
Cited
US3404721A
Cited
US3637003A
Cited
US3643723A
Cited
GB1163817A
Cited
US3656533A
Cited
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 |