Pneumatic tire with tread including three dimensional sipes...

Details Pneumatic tire with tread including three dimensional sipes... Pneumatic tire with tread including three dimensional sipes...

2011-08-23

2011-08-23

Maki, Steven D (Department: 1747)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209230, C152SDIG020, C152S902000

Reexamination Certificate

active

08002005

ABSTRACT:
A pneumatic tire including a plurality of grooves which extend at least in the circumferential direction, and which are formed in a tread portion and sipes which are formed in a plurality of blocks formed by the grooves. In the pneumatic tire, the groove width of the sipe formed in each of the blocks constituting a center region of the tread portion is greater than the groove width of the sipe formed in each of the blocks constituting edge regions of the tread portion. At least the sipes formed in the blocks constituting the center region are three-dimensional sipes each having a zigzag shape extending in the width, circumferential and radial directions of the tire. Each of the three-dimensional sipes is provided with, on the inner side thereof in the tire radial direction, at least one cutout which has a length, in the tire radial direction, of 50 to 90% of the length of the three-dimensional sipe in the tire radial direction, and which has a length, in the tire width direction, of 1 to 5 mm.

REFERENCES:
patent: 5783002 (1998-07-01), Lagnier
patent: 6050313 (2000-04-01), Tsuda
patent: 2003/0029537 (2003-02-01), Iwamura
patent: 2004/0134579 (2004-07-01), Tanaka
patent: 2008/0029193 (2008-02-01), Perrin et al.
patent: 10-181314 (1998-07-01), None
patent: 10-309910 (1998-11-01), None
patent: 2001-1722 (2001-01-01), None
patent: 2002-293111 (2002-10-01), None
patent: 2002-321509 (2002-11-01), None
patent: 2003-25812 (2003-01-01), None
patent: 2004-203128 (2004-07-01), None
Machine translation for Japan 10-309910 (no date).
Machine translation for Japan 10-181314 (no date).

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