EP0412928A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1990-07-20
•
Granted: —
•
Expires: 2010-07-20
Abstract
Abstract A pneumatic tire (10) comprises a radial ply (13) carcass, a tread portion (27) disposed radially outwardly of the crown region of the carcass and a crown reinforcing structure interposed between the tread portion (27) and the crown region of the carcass. The crown reinforcing structure includes a belt assembly (21) having at least a first (22), radially innermost and a second (23), radially outermost belt ply as well as a textile overlay structure which is superimposed radially outwardly to said belt assembly (21). The textile overlay structure is reinforced with cords (30, 40) being made of materials showing on a homogeneous specimen a Youngs modulus of at least 15,000 MPa; the cords have a twist multiplier comprised between 6 and 14 and at least one of the yarns (31, 32, 41, 42, 43) included in the cords (30, 40) has a twist of at least 14 turns per inch.
Inventors
- 👤 René François Reuter
- 👤 Marie-Rita Thise-Fourgon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 00:16
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/0042; B60C9/18; B60C9/20; B60C9/2003; B60C9/2009; B60C9/22; B60C9/2204; D; D02; D02G; D02G3/00; D02G3/44; D02G3/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
203 words
A pneumatic tire comprising a radial ply carcass, a tread disposed radially outwardly of the crown region of the carcass and a crown reinforcing structure interposed between the tread portion and the crown region of the carcass in circumferential surrounding relation to the carcass, whereby the crown reinforcing structure includes a belt assembly having at least a first, radially innermost and a second, radially outermost belt ply, each of the belt plies comprising reinforcement cords of high modulus material extending parallel to one another in each belt ply, and the cords in the first belt ply making with the cords in the second belt ply opposed angles with respect to the equatorial plane of the tire, as well as a textile overlay structure, made from cord reinforced elastomeric material, which is superimposed radially outwardly to said belt assembly, characterized in that the textile overlay structure is reinforced with cords being made of materials showing on a homogeneous specimen a Youngs modulus of at least 15,000 MPa, in that the cords have a twist multiplier comprised between 6 and 14 and in that at least one of the yarns included in the cords has a twist of at least 14 turns per inch (TPI).
Claim 2
Dependent Claim
203 words
A pneumatic tire comprising a radial ply carcass, a tread disposed radially outwardly of the crown region of the carcass and a crown reinforcing structure interposed between the tread portion and the crown region of the carcass in circumferential surrounding relation to the carcass, whereby the crown reinforcing structure includes a belt assembly having at least a first, radially innermost and a second, radially outermost belt ply, each of the belt plies comprising reinforcement cords of high modulus material extending parallel to one another in each belt ply, and the cords in the first belt ply making with the cords in the second belt ply opposed angles with respect to the equatorial plane of the tire, as well as a textile overlay structure, made from cord reinforced elastomeric material, which is superimposed radially outwardly to said belt assembly, characterized in that the textile overlay structure is reinforced with cords being made of materials showing on a homogeneous specimen a Youngs modulus of at least 15,000 MPa, in that the cords have a twist multiplier comprised between 6 and 14 and in that at least one of the yarns included in the cords has a twist of at least 14 turns per inch (TPI).
Claim 3
Dependent Claim
44 words
A pneumatic tire according to claim 1, characterized in that the cords of the overlay structure have twist multipliers between 8 and 12 and in that at least one of the yarns included in the cords has a twist of at least 16 TPI.
Claim 4
Dependent Claim
52 words
A pneumatic tire according to claim 1 or 2, characterized in that the overlay structure consists of a spirally wound strip or a spirally wound cord coated with elastomeric material extending transversely over the belt assembly and making an angle of between 0° and 5° with the equatorial plane of the tire.
Claim 5
Dependent Claim
41 words
A pneumatic tire according to claim 3, characterized in that said strip has a width in the range of between 10 and 40 mm and in that the cords reinforcing the strips have a fabric density of less than 60 EPI.
Claim 6
Dependent Claim
28 words
A pneumatic tire according to claim 3, characterized in that the cord(s) of the overlay structure consist(s) of a single yarn of about 500 to about 3,600 Denier.
Claim 7
Dependent Claim
66 words
A pneumatic tire according to claim 3, characterized in that the cord(s) of the overlay structure consist(s) of 2 yarns of 500 to 3,000 Denier, both yarns having the same amount of twist and twist direction, the twist direction of the yarns being opposed to that of the cord and in that the yarns are twisted together at at least 12 TPI, to form the cord.
Claim 8
Dependent Claim
65 words
A pneumatic tire according to claim 3, characterized in that the cord(s) of the overlay structure consist(s) of 3 yarns of 500 to 1,500 Denier, the three yarns having the same twist and twist direction, the twist direction of the yarns being opposed to that of the cord and in that the yarns are twisted together at at least 12 TPI, to form the cord.
Claim 9
Dependent Claim
26 words
A pneumatic tire according to any of claims 1 to 8, characterized in that the textile overlay structure is reinforced with cords being made of rayon.
Claim 10
Dependent Claim
42 words
A pneumatic tire according to any of claims 1 to 8, characterized in that the textile overlay structure is reinforced with cords being made of materials showing on a homogeneous specimen a Youngs modulus of at least 40,000 MPa such as aramid.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.