Utility vehicle tyres
AssigneeContinental Reifen Deutschland GmbH
InventorsAndre Lutz, Florian Kristen
Life of this patent
Estimating the term…
Abstract
The invention relates to a utility vehicle tire tyre having a tread with at least one circumferential channel (2, 2′, 2″) with a channel base (5) and channel walls (4, 4′). Base elevations are formed on the channel base. A top surface (8, 8′, 8″) of the base elevations (7, 7′, 7″) slopes downward uniformly toward the surface edge, wherein the channel walls (4, 4′) have, to the side of the base elevations (7, 7′, 7″), wall sections (4b, 4′b) which are convexly curved toward one another.
Claims13
A vehicle tire comprising:
- a tread having a circumferential channel with a channel base and channel walls and having a tread depth;
- base elevations formed on the channel base as stone ejectors;
- the base elevations each comprise an upper part and a base part, the upper part having a top surface and the base part having a base surface;
- the base elevations having a maximum height at a top of the upper part of 25% to 60% of the tread depth in a radial direction, the top surface connects with the base surface at an encircling surface edge of the base elevation, the top surface having a plurality of planed surfaces that slope downwardly uniformly to the encircling surface edge to distribute forces from stones;
- the base surface connects with the encircling surface edge and is substantially vertical in the radial direction;
- the base elevations are at distances of greater than zero and up to 4.0 mm from the channel walls, wall sections of the channel walls adjacent to the base elevations have a downward slope and converge toward each other, and the wall sections have a concave curvature in plan view that opens toward the base elevations, the downward slope and the concave curvature of the wall sections being at least over a majority of a radial extent of the wall sections as viewed in cross-section of the circumferential channel;
- the encircling surface edge follows the concave curvature of the wall sections so that an axial width of the base elevations, as viewed in plan view, decreases toward circumferential ends of the base elevations corresponding to the concave curvature of the wall sections, and the base elevations are elongated to have a greater extent in the circumferential direction than in the axial direction;
- wherein the base elevations are elongated along a circumferential centerline of the channel, and the plurality of planed surfaces include a first plurality of planed surfaces on one side of the centerline, and a second plurality of planed surfaces on an opposite side of the centerline;
- and wherein the first plurality of planed surfaces and the second plurality of planed surfaces are angled obliquely relative to the circumferential centerline.
The tire of The tire of further comprising a groove path of the circumferential channel that runs between the wall sections and the base elevations, wherein the groove path narrows as it runs from a first position adjacent to a first circumferential end of each base elevation to a second position adjacent an axially widest part of each base elevation, and the groove path widens as it runs from the second position to a third position adjacent to a second circumferential end of each base elevation;
- wherein the channel walls on opposite sides of the circumferential channel are each defined by the wall sections and wall regions arranged between the wall sections at regular intervals over an entire circumferential extent of the circumferential channel, and wherein an entirety of each channel wall extends continuously and uninterruptedly over the entire circumferential extent of the circumferential channel;
- wherein the channel walls defining opposite sides of the circumferential channel are identical symmetrical mirror images of each other with respect to a plane defined by the circumferential direction;
- and wherein:
- a first planed surface of the first plurality of planed surfaces is oriented obliquely to face both in a first circumferential direction of the tire and a first axial direction of the tire, a second planed surface of the first plurality of planed surfaces is oriented obliquely to face both in a second circumferential direction of the tire and the first axial direction of the tire, a third planed surface of the second plurality of planed surfaces is oriented obliquely to face both in the first circumferential direction of the tire and a second axial direction of the tire, and a fourth planed surface of the second plurality of planed surfaces is oriented obliquely to face both in the second circumferential direction of the tire and the second axial direction of the tire.
Dependencies are inferred from the claim text.