Pneumatic tire with tread having sipes

Details Pneumatic tire with tread having sipes Pneumatic tire with tread having sipes

2007-12-25

2007-12-25

Maki, Steven D. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209210, C152S209230, C152SDIG020, C152S902000

Reexamination Certificate

active

11111723

ABSTRACT:
It is a subject to suitably decrease the rigidity of blocks, to generate suitable collapsing of the blocks, to sufficiently exhibit edge effects of sipes, and to improve braking performances and the like in the medium term of wear and thereafter; and for solving this subject, in a pneumatic tire formed with blocks on its tread and engraved with sipes11on the blocks, the sipes11are classified into a surface portion12, an intermediate portion13, and a bottom portion14in a depth direction from a tread surface17up to sipes bottom18, wherein the surface portion12and the bottom portion14open in a wave-shaped form in which crest portions21and trough portions22of the wave-shaped form extend in directions vertical to the tread, while the intermediate portion13opens in a wave-shaped manner in which the crest portions21and trough portions22of the wave-shaped form extend in a zigzag-like manner.

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patent: 2002-356105 (2002-12-01), None

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