Patent US3669173A successfully refreshed from Google Patents.
US3669173A
Expired / Lapsed
US
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Pneumatic tires
Assignee: Dunlop Holdings Ltd
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Filing: 1969-09-15
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Granted: 1972-06-13
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Expires: 1989-09-15
Abstract
Abstract A breaker layer for a pneumatic tire comprising rubberimpregnated glass cords or yarns of filaments each having a diameter between 0.0005 and 0.0008 inches.
Inventors
- 👤 Maurice A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:08
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C9/0028; B60C9/0042; D; D02; D02G; D02G3/00; D02G3/44; D02G3/48; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/1081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
A breaker layer according to claim 1 in which the glass filaments are E-glass filaments.
Claim 2
Dependent Claim
15 words
A breaker layer according to claim 1 in which the glass filaments are silica-glass filaments.
Claim 3
Dependent Claim
18 words
A breaker layer according to claim 1 in which the rubber or rubber-like composition is a resorcinol-formaldehyde-latex composition.
Claim 4
Dependent Claim
25 words
A pneumatic tire which comprises a carcass and a breaker assembly the breaker assembly comprising at least one breaker layer as claimed in claim 1.
Claim 5
Dependent Claim
15 words
A pneumatic tire according to claim 5 in which the carcass is of radial-ply construction.
Claim 6
Dependent Claim
15 words
A pneumatic tire according to claim 5 in which the carcass is of cross-ply construction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |