Pneumatic tire for use on iced and snowed road surfaces

Details Pneumatic tire for use on iced and snowed road surfaces Pneumatic tire for use on iced and snowed road surfaces

2006-04-25

2006-04-25

Maki, Steven D. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209180, C152S209250, C152SDIG020, C152S902000

Reexamination Certificate

active

07032635

ABSTRACT:
A pneumatic tire for use on iced and snowed road surfaces has a tread surface. The tread surface has a plurality of main grooves extending in a circumferential direction of the tire and a plurality of lateral grooves extending in a width direction of the tire. Blocks are defined by the main grooves and the lateral grooves. The blocks have a ground contact face which has a plurality of pairs of sipes comprising a left sipe and a right sipe extending in the tire width direction. The plurality of pairs of sipes are placed in a predetermined interval in the tire circumferential direction. Each of the left and right sipes of each pair extends from a width-directional center portion of the ground contact face of the block toward each way of the tire width direction so as to open its outer end to each side face of the block.

REFERENCES:
patent: 4934424 (1990-06-01), Kojima
patent: 5301727 (1994-04-01), Inoue
patent: 5873399 (1999-02-01), Ochi et al.
patent: 6000450 (1999-12-01), Kishimoto et al.
patent: 6571844 (2003-06-01), Ochi et al.
patent: 2002/0007889 (2002-01-01), Eromaki
patent: 3-38406 (1991-02-01), None
patent: 5-162511 (1993-06-01), None
patent: 2001-277817 (2000-03-01), None
patent: 2000-289413 (2000-10-01), None

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