Pneumatic tire with tread including ribs having closed sipes

Details Pneumatic tire with tread including ribs having closed sipes Pneumatic tire with tread including ribs having closed sipes

2011-07-19

2011-07-19

Maki, Steven D (Department: 1747)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209180, C152SDIG020, C152S901000

Reexamination Certificate

active

07980280

ABSTRACT:
A pneumatic tire having improved wear resistance, especially improved uneven wear resistance (such as river wear), is offered. The tire that is a rib-pattern tire has five ribs extending circumferentially of the tire. The ribs include a center rib and intermediate ribs located on the opposite sides of the center rib that is located on the equator line of the tire. Closed sipes are formed at least in the center rib and in the intermediate ribs. Each sipe is located in the lateral center of the corresponding rib. Both ends of each sipe terminate within the corresponding rib. The closed sipes are successively offset circumferentially among the ribs and arranged in a periodic pattern on the outer surface of the tire. The closed sipes in the ribs are so arranged that when they are optically projected onto the equator line of the tire, the sipes do not overlap circumferentially of the tire among the ribs.

REFERENCES:
patent: 2007/0151646 (2007-07-01), Ito
patent: 03-153401 (1991-07-01), None
patent: 07-115571 (1995-12-01), None
patent: 08-192607 (1996-07-01), None
patent: 10-264609 (1998-10-01), None
patent: 2005-035328 (2005-02-01), None
patent: 2005-132267 (2005-05-01), None
Machine translation for Japan 07-115571 (no date).

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