Patent DE361793C successfully refreshed from Google Patents.
US4230169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreinforced tire having strengthened zones
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1979-03-05
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Granted: 1980-10-28
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Expires: 1999-03-05
Abstract
Abstract A tire of elastic material having a tread extended on both sides by a shoulder followed by a sidewall terminating in a bead, the tire being without reinforcement in the tread and in the sidewalls, is improved due to the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and adjacent sidewall.
Inventors
- 👤 Jacques Boileau
- 👤 Albert Mathevet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:37
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C5/00; B60C5/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone comprising an annular bulge.
Claim 2
Dependent Claim
76 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone comprising an annular bulge.
Claim 3
Dependent Claim
35 words
The tire according to claim 1, characterized by the fact that the annular bulge is comprised mainly of an elastomer which is less elastic than that of both the adjacent shoulder and the adjacent sidewall.
Claim 4
Dependent Claim
21 words
The tire according to claim 1, characterized by the fact that the annular bulge contains a ring of a filamentary material.
Claim 5
Dependent Claim
108 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone having the same thickness as that of the adjacent shoulder and the adjacent sidewall and being comprised mainly of an elastomer which is less elastic than that of both the adjacent shoulder and the adjacent sidewall.
Claim 6
Dependent Claim
108 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone having the same thickness as that of the adjacent shoulder and the adjacent sidewall and being comprised mainly of an elastomer which is less elastic than that of both the adjacent shoulder and the adjacent sidewall.
Claim 7
Dependent Claim
95 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone having the same thickness as that of the adjacent shoulder and the adjacent sidewall and containing a ring formed of a steel cable.
Claim 8
Dependent Claim
95 words
A tire of elastic material having a tread extended on both sides by a shoulder and a sidewall terminating in a bead, said tire being without reinforcement in the tread and in the sidewalls, characterized by the fact that between each shoulder and the corresponding sidewall the tire has a zone whose rigidity in the circumferential direction is higher than the rigidity of the adjacent shoulder and the adjacent sidewall, said zone having the same thickness as that of the adjacent shoulder and the adjacent sidewall and containing a ring formed of a steel cable.
References Cited (Backward Citations)
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Cited
US1374957A
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US1836091A
Cited
US2902072A
Cited
US3208500A
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US3458373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |