US4407347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: PNEU UNIROYAL ENGLEBERT
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Filing: 1978-01-13
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Granted: 1983-10-04
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Expires: 1998-01-13
Abstract
Abstract A radial ply pneumatic tire is provided with a tread reinforcement including a first layer of at least one ply of tire cord fabric wherein the cords have a high modulus of elasticity. A second layer which overlies said first layer is at least one composite ply of tire cord fabric including a central strip of steel cords oriented at an angle of from 60° to 90° with the equatorial plane of the pneumatic tire, and two lateral strips abutting the central strip having cords formed from material possessing a low modulus of elasticity.
Inventors
- 👤 Henri J. Mirtain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
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: 9
Claim 1
Independent Claim
155 words
A pneumatic tire comprising: (a) a carcass; (b) a tread portion connected to said carcass; and (c) a reinforcement belt assembly peripherally enclosing said carcass beneath said tread portion and being substantially coextensive with said tread portion, said reinforcement belt including: (i) a first layer of at least one ply of tire cord fabric containing cords having a high modulus of elasticity, at least one ply of said first layer being of a width substantially equal to that of the tire tread; and (ii) a second layer of at least one composite ply superimposed upon said first layer, including a central strip portion of metal tire cord fabric in which the cords are oriented at an angle of between 60° to 90° with the equatorial plane of the pneumatic tire and two lateral strips of tire cord fabric which abut said central strip, the cords of said lateral strips possessing a low modulus of elasticity.
Claim 2
Dependent Claim
155 words
A pneumatic tire comprising: (a) a carcass; (b) a tread portion connected to said carcass; and (c) a reinforcement belt assembly peripherally enclosing said carcass beneath said tread portion and being substantially coextensive with said tread portion, said reinforcement belt including: (i) a first layer of at least one ply of tire cord fabric containing cords having a high modulus of elasticity, at least one ply of said first layer being of a width substantially equal to that of the tire tread; and (ii) a second layer of at least one composite ply superimposed upon said first layer, including a central strip portion of metal tire cord fabric in which the cords are oriented at an angle of between 60° to 90° with the equatorial plane of the pneumatic tire and two lateral strips of tire cord fabric which abut said central strip, the cords of said lateral strips possessing a low modulus of elasticity.
Claim 3
Dependent Claim
30 words
The pneumatic tire in accordance with claim 1 wherein said tire cord fabric comprising said lateral strips includes cords selected from the group consisting of nylon, polyester, and cellulose acetate.
Claim 4
Dependent Claim
24 words
The pneumatic tire in accordance with claim 1 wherein said cords in said lateral strips are parallel to the equatorial plane of said tire.
Claim 5
Dependent Claim
21 words
The pneumatic tire in accordance with claim 1 wherein said tire cord fabric in said first layer is an aromatic polyamide.
Claim 6
Dependent Claim
32 words
The pneumatic tire in accordance with claim 1 wherein said cords in said first layer are oriented at an angle of between 15° to 25° with the equatorial plane of said tire.
Claim 7
Dependent Claim
46 words
The pneumatic tire in accordance with claim 1 wherein said first layer includes two plies of aromatic polyamide tire cord fabric, and in which said ply adjacent said second layer is of a width approximately 5 to 20% less than the width of said other ply.
Claim 8
Dependent Claim
31 words
The pneumatic tire in accordance with claim 1 wherein each of said lateral strips has a width equal to between approximately one quarter and the full width of said central strip.
Claim 9
Dependent Claim
19 words
The pneumatic tire in accordance with claim 1 wherein said lateral strips are folded to abut said first layer.
References Cited (Backward Citations)
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |