Pneumatic tire having improved wet traction

Details Pneumatic tire having improved wet traction Pneumatic tire having improved wet traction

1992-10-02

1994-07-12

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1111

Patent

active

053279522

ABSTRACT:
A directional pneumatic tire having improved wet traction has two annular aqua channels and curved lateral grooves which direct water from the footprint to the shoulder area of the tire to help prevent hydroplaning. The pitch boundaries between the portions of the tire on either side of the aqua channels may be skewed. The curved lateral grooves and the skewing reduce noise properties of the tire. In addition, the lugs may have rounded or radiused leading and trailing edges, and a leading groove wall angle of about 5.degree. and a trailing groove wall angle of about 1.degree., which are believed to reduce noise and irregular wear. The lugs contain slots which change direction within the lug and tie bars in the slots at each point where the slots change direction. The tread has non-skid depth of 0.75 to 1 cm (0.030 to 0.40 inch) and a ratio of non-skid to tie bar depth of 0.42.

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"Tire Materials & Construction"; Automotive Engineering; Oct. 1992, pp. 23-28.
Abstract of JP 63-260306, Apr. 10, 1990.
Hannoversche Allgemeine Zeitung Car Brochure, p. 39, no date.
Contentinal Product Brochure, Sep. 1991.
Auto Parts Guide, Oct. 1991.
European Rubber Journal, Apr. 1990.
Modern Tire Dealer 1988.
Automotive Engineering, May 1990.

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