US3842882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire having sidewalls of unequal length
Assignee: Dunlop Co Ltd
•
Filing: 1971-09-13
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Granted: 1974-10-22
•
Expires: 1991-09-13
Abstract
Abstract A pneumatic tire having sidewalls of unequal length and a carcass constructed to conform when uninflated to equilibrium cross-sectional shape, the shorter sidewall terminating radially inwardly by that point at which the equilibrium shape of the sidewall becomes perpendicular relative to the axis of rotation of the tire.
Inventors
- 👤 V Gough
- 👤 R Waller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
B; B60; B60C; B60C19/00; B60C19/001; B60C13/00; B60C15/00; B60C15/02; B60C15/0236; B60C5/00; Y; Y10; Y10S; Y10S152/00; Y10S152/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A pneumatic tire having sidewalls of unequal length and a carcass having at least one ply of reinforcing cords, the crosssectional shape of the carcass conforming, over the range of inflation pressure from uninflated to fully inflated, to the equilibrium cross-sectional shape for a carcass of corresponding width and cord angle, each sidewall terminating in a bead at a position radially inwardly of the point at which the equilibrium shape of the sidewall becomes perpendicular, when viewed in cross-section, to the axis of rotation of the tire.
Claim 2
Dependent Claim
87 words
A pneumatic tire having sidewalls of unequal length and a carcass having at least one ply of reinforcing cords, the crosssectional shape of the carcass conforming, over the range of inflation pressure from uninflated to fully inflated, to the equilibrium cross-sectional shape for a carcass of corresponding width and cord angle, each sidewall terminating in a bead at a position radially inwardly of the point at which the equilibrium shape of the sidewall becomes perpendicular, when viewed in cross-section, to the axis of rotation of the tire.
Claim 3
Dependent Claim
30 words
A pneumatic tire according to claim 1 wherein the difference in bead base diameter of the sidewalls lies within the range 5 to 12% of the larger diameter bead base.
Claim 4
Dependent Claim
19 words
A pneumatic tire according to claim 1 wherein the bases of the bead are provided with different taper angles.
Claim 5
Dependent Claim
23 words
A pneumatic tire according to claim 1 and a wheel, the tire being inflated upon the wheel to conform to equilibrium cross-sectional shape.
Claim 6
Dependent Claim
112 words
A pneumatic tire having sidewalls of unequal length and a carcass having at least one ply of reinforcing cords, the cross-sectional shape of the carcass conforming, over the range of inflation pressure from uninflated to fully inflated, to the equilibrium cross-sectional shape for a carcass of corresponding width and cord angle, each sidewall containing cords of the same angle and terminating in a bead at a position radially inwardly of the point at which the equilibrium shape of the sidewall becomes perpendicular, when viewed in cross-section, to the axis of rotation of the tire, the shorter sidewall being a mirror image of the corresponding length of the longer sidewall in cross-sectional shape.
Claim 7
Dependent Claim
112 words
A pneumatic tire having sidewalls of unequal length and a carcass having at least one ply of reinforcing cords, the cross-sectional shape of the carcass conforming, over the range of inflation pressure from uninflated to fully inflated, to the equilibrium cross-sectional shape for a carcass of corresponding width and cord angle, each sidewall containing cords of the same angle and terminating in a bead at a position radially inwardly of the point at which the equilibrium shape of the sidewall becomes perpendicular, when viewed in cross-section, to the axis of rotation of the tire, the shorter sidewall being a mirror image of the corresponding length of the longer sidewall in cross-sectional shape.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |