Pneumatic tire with tread including blocks having open and...

Details Pneumatic tire with tread including blocks having open and... Pneumatic tire with tread including blocks having open and...

2005-08-09

2008-08-26

Maki, Steven D (Department: 1791)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209180, C152S902000, C152SDIG020

Reexamination Certificate

active

07416004

ABSTRACT:
A pneumatic tire comprises a tread portion provided with blocks, the blocks are axially divided by at least one circumferential groove and circumferentially divided by oblique grooves inclined with respect to the tire axial direction towards one direction, and each of the blocks is subdivided into at least two parallelogrammic block elements by at least one open sipe extending across the block and inclined with respect to the tire axial direction towards the same direction as the oblique grooves, the parallelogrammic block elements include two block-end elements located on the circumferential ends of the block, and each of the block-end elements is provided with at least one closed sipe extending at an angle of less than 45 degrees with respect to the tire axial direction and terminating within the block to have closed ends.

REFERENCES:
patent: 6571844 (2003-06-01), Ochi et al.
patent: 06-055911 (1994-03-01), None
patent: 06-247110 (1994-09-01), None
patent: 10-203121 (1998-08-01), None
patent: 10-203121 (1998-08-01), None
patent: 11-348510 (1999-12-01), None
patent: 2000-006620 (2000-01-01), None
patent: 2000-025420 (2000-01-01), None
patent: 2002-187413 (2002-07-01), None
patent: 2002-347413 (2002-12-01), None
Machine translation for Japan 11-348510.
Machine translation for Japan 2002-347413.

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