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US3674080A
Expired / Lapsed
US
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Wheel for high-speed cornering
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1970-02-11
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Granted: 1972-07-04
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Expires: 1990-02-11
Abstract
Abstract A wheel rim for an automotive vehicle is formed with an annular element upstanding from it and surrounding it. The annular element has a maximum diameter at least as great as the diameter of the bead seat and no greater than the diameter of the rim flange and is positioned to engage the inner surface of the outer bead of a tubeless tire when the tire is deformed as in highspeed cornering. It thus supports the bead and prevents unwedging thereof and consequent loss of inflation air.
Inventors
- 👤 H Verdier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:20
CPC Classifications
B; B60; B60B; B60B21/00; B60B21/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
In a wheel for an automotive vehicle comprising a rim formed with a rim base and, on either side thereof, a bead seat ending in a rim flange, the improvement comprising an annular element surrounding and upstanding from said rim base and having a diameter at least as great as the diameter of the bead seat and no greater than the diameter of the rim flange, said annular element extending axially as well as radially from its point of attachment to said rim base and being positioned to engage and support the outer bead of a tubeless tire when the tire is deformed as in high-speed cornering, whereby unwedging of the outer bead and consequent loss of inflation air are prevented, and being positioned in spaced-apart relation to said bead when the tire assumes its normal form.
Claim 2
Dependent Claim
137 words
In a wheel for an automotive vehicle comprising a rim formed with a rim base and, on either side thereof, a bead seat ending in a rim flange, the improvement comprising an annular element surrounding and upstanding from said rim base and having a diameter at least as great as the diameter of the bead seat and no greater than the diameter of the rim flange, said annular element extending axially as well as radially from its point of attachment to said rim base and being positioned to engage and support the outer bead of a tubeless tire when the tire is deformed as in high-speed cornering, whereby unwedging of the outer bead and consequent loss of inflation air are prevented, and being positioned in spaced-apart relation to said bead when the tire assumes its normal form.
Claim 3
Dependent Claim
42 words
A wheel according to claim 1 wherein said annular element has a diameter greater than the diameter of the bead seat and the portion of the annular element that extends radially beyond the bead seat is roughly parallel to the rim flange.
Claim 4
Dependent Claim
14 words
A wheel according to claim 1 wherein said rim is of well base construction.
Claim 5
Dependent Claim
71 words
A wheel according to claim 3 wherein said outer bead is formed with a circumferential reinforcement and the radially outer edge of said annular element has a diameter greater than the diameter of said bead reinforcement so that, when said annular element engages said outer bead as in high-speed cornering, it does so at points of the tire which are more remote from the tire axis than is said circumferential reinforcement.
Claim 6
Dependent Claim
50 words
A wheel according to claim 3 wherein said annular element is separated axially from the outer lateral wall of said well base a distance sufficient to permit insertion between said annular element and said lateral wall of a bead of said tire during mounting of said tire on said rim.
Claim 7
Dependent Claim
41 words
A wheel according to claim 5 wherein the mounting of said annular element on said rim base is such that said annular element is slidable axially between two positions, one of said positions facilitating mounting of said tire on said rim.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |