US3893498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: Bridgestone Firestone Inc
•
Filing: 1974-06-13
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Granted: 1975-07-08
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Expires: 1994-06-13
Abstract
Abstract This disclosure relates to a tire tread design which can be utilized in pneumatic tires but is specifically applicable to belted pneumatic tires. The design comprises a V-shaped groove which contains numerous lateral channels in the walls of the groove. This configuration enables one to obtain the better resistance to stone capturing and holding of the V-shaped groove yet retain good wet pavement traction in the tire as the tread is progressively worn off. The design is particularly useful in tire having belted type constructions.
Inventors
- 👤 Lee Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:15
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/04; B60C11/042; B60C11/047; Y; Y10; Y10S; Y10S152/00; Y10S152/01; Y10S152/03; Y10S152/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
25 words
The tire of claim 1 in which both walls of said substantially V-shaped groove form substantially identical angles to said radial plane of the tire.
Claim 2
Dependent Claim
12 words
The tire of claim 1 in which said groove walls are asymmetrical.
Claim 3
Dependent Claim
18 words
The tire of claim 1 in which both walls of said substantially V-shaped groove contain said lateral channels.
Claim 4
Dependent Claim
22 words
The tire of claim 4 in which said channels are offset in respect of the corresponding channels in the opposite groove wall.
Claim 5
Dependent Claim
20 words
The tire of claim 4 in which said channels are aligned with the corresponding channels in the opposite groove wall.
Claim 6
Dependent Claim
15 words
The tire of claim 1 in which said groove is circumferentially continuous around said tire.
Claim 7
Dependent Claim
14 words
The tire of claim 1 in which said groove extends laterally across said tread.
Claim 8
Dependent Claim
27 words
The tire of claim 1 wherein said channels have an angle of 90* to said road-contacting surface at said junction of said channels and said road-contacting surface.
Claim 9
Dependent Claim
29 words
The tire of claim 1 in which said channels are spaced at least 0.10 inches and not more than 0.25 inches from adjacent channels in the same groove wall.
Claim 10
Dependent Claim
18 words
The tire of claim 1 in which said channels have a circumferential width between 0.04 and 0.10 inches.
Claim 11
Dependent Claim
25 words
The tire of claim 1 in which said groove wall forms an angle of between 18* and 45* to said radial plane of said tire.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |