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US 12,420,595 B2Granted
Tire with improved snow performance
AssigneeBridgestone Europe NV/SA
InventorsGuiseppe Rodriquez, Davy Ruggiero
Life of this patent
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Abstract
The present invention relates to a tire (1) having an external surface (10) with innovative profile at perimetral walls (2, 3, 4, 5) of the tread blocks (a, b), for improving snow performances. The perimetral walls present a 3-dimensional voids/protrusions (9, 8) pattern, configured to improve snow digging and snow trapping effects.
Claims19
A tire presenting a circumferential direction, a radial direction, and a transversal direction, and comprising:
- an external tread portion which comprises a tread block, the tread block comprising a plurality of lateral external perimetral walls;
- wherein at least one of the external perimetral walls bears a three-dimensional pattern of recesses and/or protrusions along the length of the external perimetral wall;
- wherein the recesses and/or protrusions alternate to each other according to at least two spatial directions of the external surface
- wherein the three-dimensional pattern of alternating recesses and/or protrusions is realized using a wavy generatrix swept along a wavy directrix, the wavy generatrix and the wavy directrix each comprising crest points, which are most external points of a respective external surface of the external perimetral wall, and trough points, which are most internal points of the respective external surface of the external perimetral wall, and
- wherein the external perimetral wall bearing the three-dimensional pattern of recesses and/or protrusions is not a wall defining a sipe.
2 more elements
Dependencies are inferred from the claim text.