Patent FR871050A successfully refreshed from Google Patents.
Patent US3645314A successfully refreshed from Google Patents.
US3645314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide tread tire for heavy-duty vehicles
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1970-01-30
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Granted: 1972-02-29
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Expires: 1990-01-30
Abstract
Abstract The median zone of the tread of a tire includes elements in relief directed longitudinally. Lateral zones on either side of the median zone include elements in relief directed transversely. Successive ones of the transverse elements in each of the lateral zones have inner ends alternately closer to and farther from the median plane. Different portions of the longitudinal elements are at different distances from the median plane. The longitudinal and transverse elements overlap at least partially.
Inventors
- 👤 Henri Verdier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:37
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/11; B60C11/0306; B60C11/13; Y; Y10; Y10S; Y10S152/00; Y10S152/902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
213 words
A tire comprising a tread having, in a median zone, longitudinal elements in relief with a large dimension directed longitudinally and a small dimension directed transversely and, in two lateral zones on either side of said median zone, transverse elements in relief with a large dimension directed transversely and a small dimension directed longitudinally, successive ones of said transverse elements in each of said zones having inner ends alternately closer to and farther from the median plane, thereby to define longitudinally spaced apart setback zones located laterally inwardly of each of said transverse elements of which the inner ends are farther from the median plane and longitudinally spaced apart inset zones located laterally inwardly of each of said transverse elements of which the inner ends are closer to the median plane, and each of said longitudinal elements comprising a center portion and end portions at either end of the center portion, the center portion of each longitudinal element being located at a greater distance from the median plane than either of the end portions and occupying one of said setback zones and each end portion of each longitudinal element occupying a portion of a setback zone so that there is an at least partial longitudinal overlap of the transverse with the longitudinal elements.
Claim 2
Dependent Claim
213 words
A tire comprising a tread having, in a median zone, longitudinal elements in relief with a large dimension directed longitudinally and a small dimension directed transversely and, in two lateral zones on either side of said median zone, transverse elements in relief with a large dimension directed transversely and a small dimension directed longitudinally, successive ones of said transverse elements in each of said zones having inner ends alternately closer to and farther from the median plane, thereby to define longitudinally spaced apart setback zones located laterally inwardly of each of said transverse elements of which the inner ends are farther from the median plane and longitudinally spaced apart inset zones located laterally inwardly of each of said transverse elements of which the inner ends are closer to the median plane, and each of said longitudinal elements comprising a center portion and end portions at either end of the center portion, the center portion of each longitudinal element being located at a greater distance from the median plane than either of the end portions and occupying one of said setback zones and each end portion of each longitudinal element occupying a portion of a setback zone so that there is an at least partial longitudinal overlap of the transverse with the longitudinal elements.
Claim 3
Dependent Claim
51 words
A tire according to claim 1 wherein said elements in relief are separated by grooves the width of which is within the range of one-third to one-half of the small dimension of the elements in relief and the depth of which increases from the center towards each edge of the tread.
Claim 4
Dependent Claim
44 words
A tire according to claim 1 wherein said longitudinal elements are disposed in two rows close to and on either side of the median plane, each element of one row overlapping portions of two adjacent elements of the other row in the longitudinal direction.
Claim 5
Dependent Claim
50 words
A tire according to claim 1 wherein said transverse elements comprise an inner transverse portion and an outer oblique portion, the inner transverse portion being alternately longer and shorter than the outer oblique portion in the case of successive ones oF the transverse elements in each of the lateral zones.
Claim 6
Dependent Claim
30 words
A tire according to claim 4 wherein the oblique portions of the transverse elements are oriented symmetrically on either side of the tread so as to render the tire directional.
Claim 7
Dependent Claim
25 words
A tire according to claim 4 wherein the oblique portions of the transverse elements are parallel with one another on either side of the tread.
Claim 8
Dependent Claim
19 words
A tire according to claim 1 wherein all of said elements in relief have substantially the same surface area.
Claim 9
Dependent Claim
15 words
A tire according to claim 3 wherein said tire is of the double cover type.
References Cited (Backward Citations)
US3376912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |