The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2017
Filed:
Sep. 06, 2010
Masakazu Amano, Kodaira, JP;
Masakazu Amano, Kodaira, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
High wet braking performance is obtained without causing deterioration to other aspects of performance. Circumferential direction groovesare configured with first groove portionsof zigzag shape formed at the road surface side and second groove portionsof straight line shape formed at the groove bottom side. Accordingly, an effect (edge effect) is effectively exhibited by the edges of the first groove portionscatching on the road surface when running on a comparatively shallow water depth. High wet braking performance is accordingly obtained. Water in the grooves flows smoothly due to the presence of the second groove portionsat the groove bottom side when running on a comparatively deep water depth. Reliable ground contact performance of the tread surface of the treadto the road surface and high wet braking performance is accordingly obtained. High wet braking performance can be secured irrespective of whether there is shallow or deep water due to the edge effect of the first groove portionsand due to the water expelling effect of the second groove portions