US4234029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic vehicle tire
Assignee: Continental AG
•
Filing: 1977-07-08
•
Granted: 1980-11-18
•
Expires: 1997-07-08
Abstract
Abstract A pneumatic vehicle tire having a single layer radial carcass of steel or a material of similarly high strength. The carcass is anchored by being looped around the bead cores in the beads. The laterally outwardly lying free ends of the carcass layer may extend up to about half the height of the tire side walls. Laterally outwardly, next to the looped around carcass end, between the rim flange and this carcass end, there is provided a bead reinforcer which includes pull-resistant threads or the like which are parallel to one another. The bead reinforcer is slanted with regard to the carcass, preferably extending at an angle of about 15° to 45° to the circumferential direction of the tire. The radially outwardly lying free end of the bead reinforcer has associated therewith a strip which extends parallel to said free end and includes pull-resistant threads or the like which are arranged in a cord layer. These threads are likewise slanted with regard to the circumferential direction of the tire, preferably forming an angle of about 15° to 45° with the circumferential direction, but, with regard to the bead reinforcer, are oppositely slanted, i.e. cross the threads of the bead reinforcer, in such a way that the freely ending, laterally looped around carcass end forms with the bead reinforcer and this strip a triangular formation which practically maintains the mutual spacing of the carcass strength carriers and the strength carriers of the bead reinforcer.
Inventors
- 👤 Julius Peter
- 👤 Heinz-Gunter Drossler
- 👤 Willi Bachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:46
CPC Classifications
B; B60; B60C; B60C15/00; B60C15/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10819; Y10T152/10828; Y10T152/10846
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
266 words
A pneumatic vehicle tire which includes bead portions, side walls, and a tread surface, each of said bead portions comprising in combination: a bead core; a single layer radial carcass of high strength material having one end portion thereof which is anchored in said bead portion by being looped around said bead core, that portion of said carcass which is looped around said bead core extending laterally outwardly of said bead portion over a portion up to approximately half of the height of the pertaining side wall; bead reinforcing means located laterally outwardly of and next to said looped around portion of said carcass, said bead reinforcing means having free ends and comprising first strength carriers which are substantially parallel to one another and slanted with regard to the circumferential direction of said tire and to said carcass; strip means associated with and extending radially inwardly to about the heel of said bead core as well as extending parallel to the radially outwardly lying free end of said bead reinforcing means, said strip means comprising second strength carriers which are substantially parallel to one another and oppositely slanted with regard to the circumferential direction of said tire, said first and second strength carriers crossing one another in such a way as to form a practically non-deformable triangular formation with said looped around portion of said carcass for maintaining the mutual spacing between the respective strength carriers, said practically non-deformable triangular formation providing uniform stiffening effect around bead core as well as over the entire height of said bead reinforcing means located laterally adjoining said bead core.
Claim 2
Dependent Claim
266 words
A pneumatic vehicle tire which includes bead portions, side walls, and a tread surface, each of said bead portions comprising in combination: a bead core; a single layer radial carcass of high strength material having one end portion thereof which is anchored in said bead portion by being looped around said bead core, that portion of said carcass which is looped around said bead core extending laterally outwardly of said bead portion over a portion up to approximately half of the height of the pertaining side wall; bead reinforcing means located laterally outwardly of and next to said looped around portion of said carcass, said bead reinforcing means having free ends and comprising first strength carriers which are substantially parallel to one another and slanted with regard to the circumferential direction of said tire and to said carcass; strip means associated with and extending radially inwardly to about the heel of said bead core as well as extending parallel to the radially outwardly lying free end of said bead reinforcing means, said strip means comprising second strength carriers which are substantially parallel to one another and oppositely slanted with regard to the circumferential direction of said tire, said first and second strength carriers crossing one another in such a way as to form a practically non-deformable triangular formation with said looped around portion of said carcass for maintaining the mutual spacing between the respective strength carriers, said practically non-deformable triangular formation providing uniform stiffening effect around bead core as well as over the entire height of said bead reinforcing means located laterally adjoining said bead core.
Claim 3
Dependent Claim
49 words
A tire in combination according to claim 1, in which that portion of said single layer carcass which is looped around its pertaining bead portion extends outwardly of said bead portion within the range of from 1/3 to about one half the height of the pertaining tire side wall.
Claim 4
Dependent Claim
37 words
A tire in combination according to claim 2, in which said first and second strength carriers are slanted in such a way as to form angles of between about 15°-45° with the circumferential direction of said tire.
Claim 5
Dependent Claim
45 words
A tire in combination according to claim 3, in which said strip means is approximately U-shaped and surrounds not only at least a part of said looped around portion of said single layer carcass but also that portion of said bead reinforcing means adjacent thereto.
Claim 6
Dependent Claim
39 words
A tire in combination according to claim 3, in which said strip means is approximately U-shaped and surrounds only that portion of said bead reinforcing means which is adjacent to said looped around portion of said single layer carcass.
Claim 7
Dependent Claim
54 words
A tire in combination according to claim 3, in which said strip means comprises two strips which are substantially parallel to each other and accommodate between each other at least one of the looped around portions of said single layer carcass and that portion of said bead reinforcing means which is located adjacent thereto.
Claim 8
Dependent Claim
28 words
A tire in combination according to claim 3, in which said strip means extends inwardly from the pertaining side wall to about the heel of said bead portion.
Claim 9
Dependent Claim
37 words
A tire in combination according to claim 3, in which said second strength carriers are made of a textile material, and in which said first strength carriers and said carcass layer are made of high strength material.
Claim 10
Dependent Claim
15 words
A tire in combination according to claim 8, in which said textile material is polyamide.
Claim 11
Dependent Claim
16 words
A tire in combination according to claim 8, in which said high strength material is steel.
Claim 12
Dependent Claim
39 words
A tire in combination according to claim 3, in which said strip means is approximately U-shaped, and has two substantially parallel arms, the space between said arms comprising a tough rubber mixture having a Shore A hardness of 70.
Claim 13
Dependent Claim
43 words
A tire in combination according to claim 3, in which said strip means comprises two strips which are substantially parallel to and spaced from each other, the space between said strips comprising a tough rubber mixture having a Shore A hardness of 70.
Claim 14
Dependent Claim
43 words
A tire in combination according to claim 3, in which at least one of the looped around portions of said single layer carcass and that portion of said bead reinforcing means which is located adjacent thereto is embedded in a tough rubber mixture.
References Cited (Backward Citations)
US3118482A
Cited
US3172445A
Cited
US3205931A
Cited
CH408679A
Cited
US4067373A
Cited
US3921693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |