Pneumatic tires including foamed rubber layer to reduce noise

Details Pneumatic tires including foamed rubber layer to reduce noise Pneumatic tires including foamed rubber layer to reduce noise

1992-08-20

1995-05-23

Knable, Geoffrey L.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152532, B60C 918, B60C 1100

Patent

active

054172675

ABSTRACT:
A pneumatic tire comprises a carcass of at least one carcass ply, a belt comprised of at least three belt layers, and a tread provided with plural circumferential grooves and island portions defined by these circumferential grooves, in which the tread is comprised of at least two rubber layers, one of which layers being a foamed rubber layer not exposed at a side of ground contact surface of the tire. In this case, the foamed rubber layer is extended up to a buttress portion of the tire, whereby noises produced during the running of the tire are effectively reduced without the degradation of wear resistance.

REFERENCES:
patent: 3486545 (1969-12-01), Niclas et al.
patent: 4349061 (1982-09-01), Hirakawa et al.
patent: 4373566 (1983-02-01), Hirakawa et al.
patent: 5109902 (1992-05-01), Kobayashi

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