Pneumatic tire including groove bottom rib

Details Pneumatic tire including groove bottom rib Pneumatic tire including groove bottom rib

2005-07-19

2005-07-19

Maki, Steven D. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209190, C152S209220, C152S209260

Reexamination Certificate

active

06918420

ABSTRACT:
A pneumatic tire comprises a tread portion provided with at least one wide circumferential groove, the wide circumferential groove extending continuously in the tire circumferential direction and having a groove width GW of not less than 5% of the ground contacting width TW, the wide circumferential groove provided in the groove bottom with a groove bottom rib, the groove bottom rib extending continuously along the overall length of the wide circumferential groove, the groove bottom rib having a height Hr in a range of from 0.5 to 3.0 mm and a base width Wr in a range of from 10 to 30% of the groove width GW, and the groove bottom rib provided in the top face with a small groove having a depth Dr of less than the height Hr.

REFERENCES:
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patent: 4687037 (1987-08-01), Pfeiffer et al.
patent: 5503206 (1996-04-01), Consolacion et al.
patent: 6112788 (2000-09-01), Ikeda
patent: 6505661 (2003-01-01), Nakagawa et al.
patent: 2001/0032691 (2001-10-01), Ohsawa
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patent: 710577 (1996-05-01), None
patent: 0 908 330 (1999-04-01), None
patent: 2-179508 (1990-07-01), None
patent: 8-150812 (1996-06-01), None
patent: 2001-55012 (2001-02-01), None
patent: WO 95/18022 (1995-07-01), None

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