Pneumatic tire
US9061551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Mar 31, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/1209
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic tire has a tread that is provided with a plurality of blocks comparted in a tire circumferential direction by a lateral groove. A sipe formed in each of the blocks has a narrow portion that is open in a tread surface, and a wide portion that is communicated with an inner side in a tire diametrical direction of the narrow portion and is widened than the narrow portion. The wide portion gradually increases a widening length in one side in a width direction and gradually decreases a widening length in other side in the width direction, from one end portion of the sipe toward other end portion, and accompanies an angle change at a time of appearing on the tread surface due to a progress of a wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.