US3841378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire having fleece bead reinforcements
Assignee: Dunlop Ltd
•
Filing: 1973-05-17
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Granted: 1974-10-15
•
Expires: 1993-05-17
Abstract
Abstract A tubeless penumatic tire having a bead region reinforcement of rubberized fleece material, the fibers of which are oriented substantially perpendicularly to the tire circumference. The reinforcement may be either a bead wrapping or a chafer strip.
Inventors
- 👤 W Hamacher
- 👤 H Leinweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:08
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: 7
Claim 1
Independent Claim
43 words
A pneumatic tire having at least one reinforcement separate from the carcass plies in a bead region of the tire comprising a rubberized fiber fleece, the fibers of which have a direction of preferential orientation which is substantially perpendicular to the tire circumference.
Claim 2
Dependent Claim
43 words
A pneumatic tire having at least one reinforcement separate from the carcass plies in a bead region of the tire comprising a rubberized fiber fleece, the fibers of which have a direction of preferential orientation which is substantially perpendicular to the tire circumference.
Claim 3
Dependent Claim
14 words
A pneumatic tire according to claim 1 wherein the reinforcement comprises a bead wrapping.
Claim 4
Dependent Claim
14 words
A pneumatic tire according to claim 1 wherein the reinforcement comprises a chafer strip.
Claim 5
Dependent Claim
17 words
A pneumatic tire according to claim 3 comprising a layer of rubber externally of the chafer strip.
Claim 6
Dependent Claim
53 words
A pneumatic tire according to claim 1 wherein the fleece, prior to being built into the tire has a strength in the direction which will eventually be substantially perpendicular to the tire circumference which is at least 5 times greater than the strength in a direction transverse to the direction of preferential orientation.
Claim 7
Dependent Claim
53 words
A pneumatic tire according to claim 5 wherein the fleece, prior to being built into the tire has a strength in the direction which will eventually be substantially perpendicular to the tire circumference which is 10 to 20 times greater than the strength in a direction transverse to the direction of preferential orientation.
References Cited (Backward Citations)
US1904981A
Cited
US3612138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |