US3669174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheels
Assignee: Dunlop Holdings Ltd
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Filing: 1970-06-17
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Granted: 1972-06-13
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Expires: 1990-06-17
Abstract
Abstract A wheel for a pneumatic tire, particularly for use on racing cars, provided with at least one localized projection axially inwards of the wheel rim for preventing axially inwards displacement of the tire bead from the wheel rim flange and into the wheel well. In one form of wheel, the projections are studs screwed or rivetted into the wheel. The projections are preferably provided on wheels having very wide bead seating portions.
Inventors
- 👤 Iain C Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
B; B60; B60B; B60B21/00; B60B21/10; B60C; B60C15/00; B60C15/02; B60C15/0209; B60C15/0226
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A wheel for supporting a pneumatic tire comprising a rim, a pair of circumferentially extending rim flanges in axially spaced apart relationship, rim seats for seating the bead base portions of the tire; two localized projections, one on each rim seat, each projection being axially spaced apart from its associated rim flange and diametrically opposed to the other projection with respect to the wheel, at least one of said projections being mounted in an opening in said rim seat so as to be removable from the outside of the wheel, said projection preventing substantial axial displacement of the tire bead from its associated rim flange during use of the wheel.
Claim 2
Dependent Claim
110 words
A wheel for supporting a pneumatic tire comprising a rim, a pair of circumferentially extending rim flanges in axially spaced apart relationship, rim seats for seating the bead base portions of the tire; two localized projections, one on each rim seat, each projection being axially spaced apart from its associated rim flange and diametrically opposed to the other projection with respect to the wheel, at least one of said projections being mounted in an opening in said rim seat so as to be removable from the outside of the wheel, said projection preventing substantial axial displacement of the tire bead from its associated rim flange during use of the wheel.
Claim 3
Dependent Claim
23 words
A wheel as in claim 1 wherein the said at least one of said projections comprises a stud rivetted to the rim seat.
Claim 4
Dependent Claim
34 words
A wheel as in claim 1 wherein the projection is screwed stud and said opening has engaging threads whereby the screwed stud is capable of being unscrewed from the rim to allow tire fitting.
Claim 5
Dependent Claim
23 words
A wheel as in claim 3 wherein the screwed stud is provided with a sealing means to prevent air loss from the tire.
Claim 6
Dependent Claim
30 words
A wheel as in claim 4 wherein the screwed stud is formed with a head and a sealing means comprises a sealing washer between the head and the rim seat.
Claim 7
Dependent Claim
26 words
A wheel as in claim 1 wherein the projection comprises a member of 0.25 inches diameter and about 0.5 inches in height from the rim seat.
Claim 8
Dependent Claim
8 words
A racing car wheel as in claim 1.
Claim 9
Dependent Claim
48 words
A wheel according to claim 1 wherein the axial width of the rim seats is substantially wider than the axial distance between each projection and its associated rim flange whereby any part of either tire bead is prevented from leaving the rim seats in use of the wheel.
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 |