Patent US3930527A successfully refreshed from Google Patents.
US3930527A
Expired / Lapsed
US
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Tire and wheel assembly
Assignee: Dunlop Holdings Ltd
•
Filing: 1973-09-20
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Granted: 1976-01-06
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Expires: 1993-09-20
Abstract
Abstract A wheel having a pair of spaced-apart seats for tire beads and annular, axially extending rim portions extending from adjacent the bead seats and forming faces against which a sidewall of a tire can be deflected and supported when the tire is deflated.
Inventors
- 👤 Tom French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:56
CPC Classifications
B; B60; B60B; B60B21/00; B60B21/12; B60B21/02; B60B21/10; B60C; B60C15/00; B60C15/02; B60C17/00; B60C17/10; B60C17/103; B60C3/00; B60C3/04; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10819; Y10T152/10828
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
A wheel for a single chamber pneumatic tire capable of being run in a deflated condition comprising a wheel rim having a pair of spaced apart seats for receiving the tire beads and a pair of annular flanges for preventing axial outward movement of the tire beads when the tire is inflated, each flange having a circumferentially extending substantially axially outwardly projecting portion defining a surface against which the sidewall of a tire can be supported when the tire is run deflated, each axially outwardly projecting portion having on its sidewall supporting surface a coating of a low friction material.
Claim 2
Dependent Claim
100 words
A wheel for a single chamber pneumatic tire capable of being run in a deflated condition comprising a wheel rim having a pair of spaced apart seats for receiving the tire beads and a pair of annular flanges for preventing axial outward movement of the tire beads when the tire is inflated, each flange having a circumferentially extending substantially axially outwardly projecting portion defining a surface against which the sidewall of a tire can be supported when the tire is run deflated, each axially outwardly projecting portion having on its sidewall supporting surface a coating of a low friction material.
Claim 3
Dependent Claim
14 words
A wheel according to claim 1 in which the low friction material is polytetrafluoroethylene.
Claim 4
Dependent Claim
23 words
The wheel of claim 1 including a tire having a tread width greater than the overall width between extremities of the wheel rim.
Claim 5
Dependent Claim
36 words
The wheel of claim 1 further including means between the spaced apart bead seats to prevent a bead of a tire mounted thereon from becoming dislodged from its bead seat when running in a deflated condition.
Claim 6
Dependent Claim
67 words
A wheel according to claim 4 in which the means for preventing a bead of a tire mounted thereon from becoming dislodged when running in a deflated condition comprises a portion on the wheel between the spaced apart seats projecting radially outwards thereof to form a saddle on which the interior surface of the tread of a tire mounted on the rim can be supported upon deflation.
Claim 7
Dependent Claim
55 words
A wheel according to claim 4 in which the means for preventing a bead of a tire mounted thereon from becoming dislodged when running in a deflated condition comprises movable projections on the wheel rim extending radially outwardly to prevent at least the laterally outer bead of the tire from moving away from its seat.
Claim 8
Dependent Claim
39 words
A wheel according to claim 4 in which the means for preventing a bead of a tire mounted thereon from becoming dislodged when running in a deflated condition comprises a nondecreasing diameter of the wheel rim between the flanges.
Claim 9
Dependent Claim
21 words
A wheel according to claim 7 in which the wheel rim is split to permit a tire to be mounted thereon.
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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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |