US3986545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire tread
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1975-06-05
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Granted: 1976-10-19
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Expires: 1995-06-05
Abstract
Abstract An all weather road tire has a tread provided with juxtaposed circumferential grooves which follow a broken-line outline having segments of longitudinal orientation alternating with oblique segments.
Inventors
- 👤 Jean Bernard Montagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/04; B60C11/0302; B60C11/0306; B60C11/11; B60C11/12; B60C11/1236; B60C2011/1245; Y; Y10; Y10S; Y10S152/00; Y10S152/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
In a tire whose tread is provided with juxtaposed circumferential grooves which follow a broken-line outline having segments of longitudinal orientation, the outline being composed of segments of longitudinal orientation forming an angle of less than 45° with respect to the longitudinal direction of the tread which alternate with oblique segments forming an angle of more than 45° with respect to the longitudinal direction of the tread, two consecutive segments of longitudinal orientation of a circumferential groove being staggered with respect to each other in the transverse direction and being connected one to the other by an oblique segment, the improvement which comprises the segments of longitudinal orientation of two juxtaposed circumferential grooves having at least one portion in common along only a part of the length of said segments.
Claim 2
Dependent Claim
130 words
In a tire whose tread is provided with juxtaposed circumferential grooves which follow a broken-line outline having segments of longitudinal orientation, the outline being composed of segments of longitudinal orientation forming an angle of less than 45° with respect to the longitudinal direction of the tread which alternate with oblique segments forming an angle of more than 45° with respect to the longitudinal direction of the tread, two consecutive segments of longitudinal orientation of a circumferential groove being staggered with respect to each other in the transverse direction and being connected one to the other by an oblique segment, the improvement which comprises the segments of longitudinal orientation of two juxtaposed circumferential grooves having at least one portion in common along only a part of the length of said segments.
Claim 3
Dependent Claim
37 words
The tire according to claim 1 wherein the circumferential grooves are juxtaposed starting from one edge of the tread over more than half of the width of the tread so as to form a transverse drainage network.
Claim 4
Dependent Claim
14 words
The tire according to claim 1 wherein the juxtaposed circumferential grooves have different amplitudes.
Claim 5
Dependent Claim
14 words
The tire according to claim 1 wherein the juxtaposed circumferential grooves have different pitches.
Claim 6
Dependent Claim
16 words
The tire according to claim 1 wherein the juxtaposed circumferential grooves have different amplitudes and pitches.
Claim 7
Dependent Claim
29 words
The tire according to claim 1 wherein the consecutive segments of longitudinal orientation of a circumferential groove have different inclinations with respect to the longitudinal direction of the tread.
Claim 8
Dependent Claim
13 words
The tire according to claim 6 wherein the inclinations are of opposite sign.
References Cited (Backward Citations)
US3584670A
Cited
US3875986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |