Tire tread with spaced central tread narrow grooves

Details Tire tread with spaced central tread narrow grooves Tire tread with spaced central tread narrow grooves

1991-06-05

1993-08-31

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1111

Patent

active

052400530

ABSTRACT:
A vehicle tire of a radial carcass construction with a low cross-sectional profile having a tread portion that is reinforced by a belt layer is provided. The tread portion comprises a plurality of circumferential tread element bands in a center portion of the tread portion and one shoulder tread element row on either side of the center portion. The tread element bands are separated from one another and from the tread element rows in an axial direction of the vehicle tire by respective circumferential grooves that have straight edges. The tread element bands have notches that are distributed in a circumferential direction of the vehicle tire and are oriented at a slant relative to a center plane of the vehicle tire. The notches start at the circumferential grooves and end within the tread element bands. The shoulder tread element rows comprise tread elements that are separated from one another by transverse grooves and are arranged transverse relative to the center plane of the tire. The tread element bands comprise a central tread element band and respective adjacent tread element bands on either side, whereby at least the central tread element band has a central narrow circumferential groove arranged in the central tire plane. The central narrow circumferential groove has straight edges and is 1/4 to 1/3 as wide and essentially as deep as the other circumferential grooves. At least the adjacent tread element bands are provided with narrow grooves that are spaced relative to one another by a circumferential length of a double tread element repeating unit whereby the narrow grooves are essentially as deep and 1/4 to 1/3 as wide as the circumferential grooves. The narrow grooves and the notches are arranged in an alternating fashion.

REFERENCES:
patent: D261497 (1981-10-01), Baus et al.
patent: D265302 (1982-07-01), Kojima et al.
patent: D279366 (1985-06-01), Takehara
patent: D286274 (1986-10-01), Davis et al.
patent: D304917 (1989-12-01), Hinrichsen
"Pneumatic Tyre Design" E. C. Woods; 1952; p. 23.

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