US3584670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1969-02-28
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Granted: 1971-06-15
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Expires: 1989-02-28
Abstract
Abstract A heavy-duty road tire of the radial type is formed with a substantially flat transverse profile. The tire has a tread formed with substantially parallel zigzag grooves, each extending obliquely from one edge of the tread to the other. The zigzag grooves are closer together at the center of the tread than at the edges of the tread and are connected by additional grooves.
Inventors
- 👤 Henri Verdier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/11; B60C11/0311; Y; Y10; Y10S; Y10S152/00; Y10S152/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A tire formed with a substantially flat transverse profile and comprising a tread formed with substantially parallel edgeconnecting grooves having circumferentially spaced, mutually offset segments, each of said edge-connecting grooves extending from one edge of said tread to the other and forming an angle with respect to the longitudinal direction oF said tire within the range of 30* to 60*, adjacent ones of said edge-connecting grooves being separated from each other at the edges of said tread a distance P and at the center of said tread a distance substantially equal to P/2, said distances being measured parallel to said longitudinal direction and P being within the range of L/3 to 2L/3, L being the width of said tread.
Claim 2
Dependent Claim
119 words
A tire formed with a substantially flat transverse profile and comprising a tread formed with substantially parallel edgeconnecting grooves having circumferentially spaced, mutually offset segments, each of said edge-connecting grooves extending from one edge of said tread to the other and forming an angle with respect to the longitudinal direction oF said tire within the range of 30* to 60*, adjacent ones of said edge-connecting grooves being separated from each other at the edges of said tread a distance P and at the center of said tread a distance substantially equal to P/2, said distances being measured parallel to said longitudinal direction and P being within the range of L/3 to 2L/3, L being the width of said tread.
Claim 3
Dependent Claim
12 words
A tire according to claim 1 wherein said angle is substantially 45*.
Claim 4
Dependent Claim
11 words
A tire according to claim 1 wherein P is substantially L/2.
Claim 5
Dependent Claim
16 words
A tire according to claim 1 comprising additional grooves dividing the ridges between adjacent edge-connecting grooves.
Claim 6
Dependent Claim
18 words
A tire according to claim 4 wherein said additional grooves divide said ridges at the widest portions thereof.
Claim 7
Dependent Claim
23 words
A tire according to claim 1 wherein the depth of said edge-connecting grooves increases in a direction from the center towards each edge.
Claim 8
Dependent Claim
22 words
A tire according to claim 1 wherein said tire is a heavy-duty road tire and further comprising a carcass having radial cords.
References Cited (Backward Citations)
US2000785A
Cited
US3373790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |