Pneumatic tire including sipes

Details Pneumatic tire including sipes Pneumatic tire including sipes

1996-05-06

1998-09-29

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152DIG3, B60C 1112

Patent

active

058141693

ABSTRACT:
Pneumatic tires according to this invention have a tread provided with blocks separated by circumferential grooves extending around the tread and lateral grooves crossing the circumferential grooves, the blocks being respectively provided with two lateral sipes, characterized in that the lateral end portions having small rigidity in block portions which are substantially separated by lateral sipes are reinforced by, for example, a platform. The invention has the effects of restraining block chipping in heavy duty tires and degrading of steering stability in passenger tires, and enhancing the performance on ice without degrading wet performance, by means of increasing sipe density and restraining lowering of the block rigidity.

REFERENCES:
patent: 4619300 (1986-10-01), Tokunaga et al.
patent: 4649975 (1987-03-01), Kogure et al.
patent: 4796683 (1989-01-01), Kawabata et al.
patent: 5109904 (1992-05-01), Numata et al.
patent: 5361816 (1994-11-01), Hitzky
Database WPI, AN 92-077406, Week 9210, Derwent Publications Ltd., London, Great Britain.
Patent Abstracts of Japan, vol. 14, No. 319 (M-996), Jul. 9, 1990, "Pneumatic radial tire for heavy load", Fumio Ogawa.

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