Patent EP0064934A2 successfully refreshed from Google Patents.
EP0064934A2
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High speed tires
Assignee: Goodyear Tire and Rubber Co
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Filing: 1982-05-07
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Granted: —
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Expires: 2002-05-07
Abstract
Abstract A high-speed tire (10) for use during both wet and drying road surface conditions is disclosed. The tread groove depth increases from a minimum depth near each tread edge to a maximum depth near the mid-circumferential plane (28). Each of an outer group of tread elements (32) has a ground-contacting surface area equal to at least about two square inches (12.90 cm 2 ) and the net-to-gross ratio of the tread central zone is not geater than about 65 percent. Transverse grooves (42) extend from the mid-circumferential plane (28) to a tread edge at an angle relative to the mid-circumferential plane which is greater than about 75 degrees at the respective tread edge (as shown at 44) and which is less than about 40 degrees at the mid-circumferential plane (as shown at 46). The widths of circumferential grooves (34) progressively decrease as their respective distances from the mid-circumferential plane (28) increase.
Inventors
- 👤 Timothy Ivan Miller
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:06
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/03; B60C11/11; B60C11/0302; B60C11/0327; B60C11/033; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
42 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, the widths of the grooves comprising the groove network generally progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 2
Dependent Claim
42 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, the widths of the grooves comprising the groove network generally progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 3
Dependent Claim
42 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, the depths of the grooves comprising the groove network generally progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 4
Dependent Claim
42 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, the depths of the grooves comprising the groove network generally progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 5
Dependent Claim
74 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, said groove network having a depth which is less than about .15 inch (.38 cm) within a distance from each tread edge of 20 percent of tread width,' and said network depth progressively increases as said groove network extends in a direction across the tread from each tread edge to the mid-circumferential plane of the tire.
Claim 6
Dependent Claim
74 words
A tire characterized by a tread having a plurality of tread elements separated by a network of grooves, said groove network having a depth which is less than about .15 inch (.38 cm) within a distance from each tread edge of 20 percent of tread width,' and said network depth progressively increases as said groove network extends in a direction across the tread from each tread edge to the mid-circumferential plane of the tire.
Claim 7
Dependent Claim
70 words
A tire according to Claim 3, further characterized by said plurality of tread elements including an outer. group of tread elements, each of said outer group of tread elements is disposed at least partially within a distance equal to 20 percent of the tread width from a respective tread edge and has a ground-contacting surface area equal to at least about two square inches (12.9 0 cm 2 ) .
Claim 8
Dependent Claim
50 words
A tire according to Claim 3, further characterized by said groove network depth being equal to at least the lesser of .20 inch (.50 cm) and 2.5 percent of tread width within a distance from both sides of the mid-circumferential plane of the tire of 10 percent of tread width.
Claim 9
Dependent Claim
74 words
A tire according to Claim 5, further characterized by said groove network including circumferential and transverse grooves, said transverse grooves extending from the mid-circumferential plane of the tire to a tread edge at an angle relative to the mid-circumferential plane at the respective tread edge which is at least about 75 degrees, said transverse grooves further extending at an angle relative to and at the mid-circumferential plane which is less than about 40 degrees.
Claim 10
Dependent Claim
41 words
A tire according to either of Claims 2 or 5, further characterized by groove network including circumferential and transverse grooves, the widths of said circumferential grooves generally progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 11
Dependent Claim
58 words
A tire according to Claim 5, further characterized by said tread having a circumferentially extending central zone which extends over the width of the tread from the mid-circumferential plane of the tire toward each tread edge a distance of 10 percent of tread width, said central zone having a net-to-gross ratio which is less than about 65 percent.
Claim 12
Dependent Claim
67 words
A tire according to Claim 8, further characterized by said plurality of tread elements including an outer group of tread elements, each of said outer group of tread elements being disposed at least partially within a distance equal to 20 percent of the tread width from a respective tread edge and having a ground-contacting surface area equal to at least about two square inches (12.90cm 2 ).
Claim 13
Dependent Claim
37 words
A tire according to Claim 9, further characterized by said groove network including circumferential and transverse grooves, the widths of said circumferential grooves progressively decreasing as their respective distances from the mid-circumferential plane of the tire increase.
Claim 14
Dependent Claim
59 words
A tire according to Claim 6, further characterized by some of said transverse grooves extending from the mid-circumferential plane of the tire toward one tread edge and the rest of said transverse grooves extending from the mid-circumferential plane toward the other tread edge, and all of said transverse grooves extending from the mid-circumferential plane in the same circumferential direction.
Claim 15
Dependent Claim
36 words
A tire according to any one of Claims 4, 9 or 10, further characterized by each of said outer group of tread elements having a width which is at least 90 percent of the length thereof.
Claim 16
Dependent Claim
24 words
A tire according to Claim 12, further characterized by the ground-contacting surface of each of said outer group of tread elements being substantially rectangular.
Claim 17
Dependent Claim
30 words
A tire according to any one of Claims 4, 9 or 10, further characterized by the ground-contacting surface of each of said outer group of tread elements being substantially rectangular.
Claim 18
Dependent Claim
31 words
The tire according to any of Claims 1, 2, or 3, further characterized by the tread thickness generally progressively decreasing from the mid-circumferential plane of the tire to the tread edge.
References Cited (Backward Citations)
No citation records indexed.
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