Patent US2898027A successfully refreshed from Google Patents.
US6701987B1
Expired / Lapsed
US
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Tread stiffening support ribs for runflat tire
Assignee: Goodyear Tire and Rubber Co
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Filing: 1999-04-12
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Granted: 2004-03-09
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Expires: 2019-04-12
Abstract
Abstract A pneumatic tire ( 10 ) incorporates a plurality of parallel-aligned, tread-stiffening support members ( 23 ) typically disposed laterally between the tread ( 12 ) and the ply structure ( 16 ). The support members ( 23 ) inhibit lateral and circumferential tread lift during runflat operation. Support members ( 23 ) can each be a monolithic rib ( 22 ) made of a fiber reinforced plastic material. An alternative layered rib ( 24 ) has two outer layers ( 40, 44 ) of a fiber reinforced plastic material while the central layer ( 42 ) is an elastomer.
Inventors
- 👤 John Ronald Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
B; B60; B60C; B60C17/00; B60C9/00; B60C9/18; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10135; Y10T152/10171; Y10T152/10495; Y10T152/10765
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
72 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, circumferentially spaced, rib shaped support members lying laterally across and radially inward of the tread.
Claim 2
Dependent Claim
72 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, circumferentially spaced, rib shaped support members lying laterally across and radially inward of the tread.
Claim 3
Dependent Claim
23 words
The tire of claim 1 characterized in that the plurality of parallel-aligned support members are disposed between the tread and the belt structure.
Claim 4
Dependent Claim
21 words
The tire of claim 1 characterized in that the plurality of parallel-aligned support members are radially inward of the belt structure.
Claim 5
Dependent Claim
33 words
The tire of claim 1 characterized in that the parallel-aligned, support members are ribs having a length equal to between about 50 percent and 110 percent of the width of the belt structure.
Claim 6
Dependent Claim
111 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, support members lying laterally across and radially inward of the tread; and characterized in that the parallel-aligned, support members are ribs having a length equal to between about 50 percent and 110 percent of the width of the belt structure; and characterized in that each of the ribs is a monolithic, fiber-reinforced plastic material.
Claim 7
Dependent Claim
111 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, support members lying laterally across and radially inward of the tread; and characterized in that the parallel-aligned, support members are ribs having a length equal to between about 50 percent and 110 percent of the width of the belt structure; and characterized in that each of the ribs is a monolithic, fiber-reinforced plastic material.
Claim 8
Dependent Claim
45 words
The tire of claim 5 characterized in that the plastic material has a plastic matrix selected from the group comprising a thermoplastic from the class of materials comprising polyetherimide, polyetheretherketone and polyphenylene sulfide or a thermoset from the class of materials comprising epoxy and polyester.
Claim 9
Dependent Claim
22 words
The tire of claim 6 characterized in that the fiber-reinforcing materials are of the class of materials comprising carbon fiber and fiberglass.
Claim 10
Dependent Claim
35 words
The tire of claim 7 characterized in that the preferred formulation of the fiber-reinforced plastic material is between 30 percent and 70 percent by weight of the fiber reinforcing material and the remainder plastic matrix.
Claim 11
Dependent Claim
110 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, support members lying laterally across and radially inward of the tread; and characterized in that the parallel-aligned, support members are ribs having a length equal to between about 50 percent and 110 percent of the width of the belt structure; and characterized in that each of the ribs is of a layered construction.
Claim 12
Dependent Claim
110 words
A pneumatic radial ply runflat tire having a tread, two inextensible annular beads, a carcass ply structure comprising one or more radial plies, a belt structure located between the tread and the ply structure, an inner liner, and two sidewalls each reinforced by at least one wedge insert, the tire being characterized by: a plurality of parallel-aligned, support members lying laterally across and radially inward of the tread; and characterized in that the parallel-aligned, support members are ribs having a length equal to between about 50 percent and 110 percent of the width of the belt structure; and characterized in that each of the ribs is of a layered construction.
Claim 13
Dependent Claim
18 words
The tire of claim 9 characterized in that each of the ribs comprises first, second and third layers.
Claim 14
Dependent Claim
27 words
The tire of claim 10 characterized in that the first layer and the third layer of each of the ribs are made of a fiber-reinforced plastic material.
Claim 15
Dependent Claim
54 words
The tire of claim 11 characterized in that the plastic material of the first layer and the third layer of each of the ribs has a plastic matrix of a thermoplastic from the class of materials comprising polyetherimide, polyetheretherketone and polyphenylene sulfide and a thermoset from the class of materials comprising epoxy and polyester.
Claim 16
Dependent Claim
22 words
The tire of claim 12 characterized in that the fiber-reinforcing materials are of the class of materials comprising carbon fiber and fiberglass.
Claim 17
Dependent Claim
35 words
The tire of claim 11 characterized in that the preferred formulation of the fiber-reinforced plastic material is between 30 percent and 70 percent by weight of the fiber reinforcing material and the remainder plastic matrix.
Claim 18
Dependent Claim
28 words
The tire of claim 10 characterized in that the second layer between the first and third layers of each of the ribs is made of an elastomeric material.
Claim 19
Dependent Claim
30 words
The tire of claim 5 characterized in that reinforcing fibers within each of the ribs are preferably unidirectional, being aligned with an axis extending along the length of the ribs.
Claim 20
Dependent Claim
35 words
The tire of claim 11 characterized in that reinforcing fibers within the first layer and the third layer of the ribs are preferably unidirectional, being aligned with the axis along the length of the rib.
Claim 21
Dependent Claim
29 words
The tire of claim 5 characterized in that the thickness of each of the ribs is preferably between 10 percent and 45 percent of the width of the rib.
Claim 22
Dependent Claim
35 words
The tire of claim 5 characterized in that the circumferential spacing between each of the ribs is between 15 percent and 200 percent of the width of the ribs on either side of the spacing.
Claim 23
Dependent Claim
19 words
The tire of claim 5 characterized in that the plurality of support members are disposed within the ply structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-03-09 | 2007-09-08 | 2008-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-09 | 2011-09-08 | 2012-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-09 | 2015-09-08 | 2016-03-09 | $7700.00 | Window Closed / Lapsed |