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US3586086A
Expired / Lapsed
US
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Pneumatic tire tread
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1969-03-17
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Granted: 1971-06-22
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Expires: 1989-03-17
Abstract
Abstract The tread of a pneumatic tire is formed with circumferential grooves. The depth dimensions of the grooves are inclined with respect to the perpendicular to the tread. The angles of inclination are all within the range of 45* in one direction to 45* in the other direction.
Inventors
- 👤 Jacques Boileau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:23
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/04; B60C11/042; B60C11/0306; B60C11/0309; B60C11/12; B60C11/1236; B60C11/124; B60C11/1204; B60C2011/1213; B60C2011/1254; Y; Y10; Y10S; Y10S152/00; Y10S152/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
A pneumatic tire comprising a tread formed with circumferential grooves, the depth dimension of said grooves being inclined with respect to the perpendicular to the surface of said tread, the spacing between said grooves in a transverse direction being greater than their depth, and the angles of inclination of said grooves all being within the range of 45* in one direction to 45* in the other direction.
Claim 2
Dependent Claim
67 words
A pneumatic tire comprising a tread formed with circumferential grooves, the depth dimension of said grooves being inclined with respect to the perpendicular to the surface of said tread, the spacing between said grooves in a transverse direction being greater than their depth, and the angles of inclination of said grooves all being within the range of 45* in one direction to 45* in the other direction.
Claim 3
Dependent Claim
33 words
A pneumatic tire according to claim 1 wherein the angles of inclination of successive grooves vary in the same sense from one edge of the tread to the other, thereby forming a progression.
Claim 4
Dependent Claim
35 words
A pneumatic tire according to claim 2 wherein the angles of inclination of successive grooves vary between 0* for the groove closest to one edge and 45* for the groove closest to the other edge.
Claim 5
Dependent Claim
42 words
A pneumatic tire according to claim 1 wherein said grooves on one side of the median plane of the tire are inclined in one direction and said grooves on the other side of said median plane are inclined in the other direction.
Claim 6
Dependent Claim
47 words
A pneumatic tire according to claim 1 wherein said inclined grooves are all on one side of the median plane of the tire, further comprising grooves on the other side of said median plane having a depth dimension substantially perpendicular to the depth dimension of said tread.
Claim 7
Dependent Claim
22 words
A pneumatic tire according to claim 1 wherein said grooves are all inclined in the same direction and form the same angle.
Claim 8
Dependent Claim
25 words
A pneumatic tire according to claim 1 wherein the angle of inclination of at least one groove is within the range of 10* to 45*.
Claim 9
Dependent Claim
20 words
A pneumatic tire according to claim 7 wherein said angle of inclination is within the range of 20* to 30*.
Claim 10
Dependent Claim
39 words
A pneumatic tire according to claim 1 wherein at least one groove is inwardly inclined with respect to at least one other groove, so that said one groove and said other groove converge toward the inside of the tire.
Claim 11
Dependent Claim
64 words
A pneumatic tire according to claim 4 wherein said grooves on one side of the median plane are inclined toward the inside of the tire and said grooves on the other side of said median plane are also inclined toward the inside of the tire, so that the grooves on the opposite sides of the median plane converge toward the inside of the tire.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |