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:
May. 19, 2015
Filed:
Oct. 21, 2010
Yukihiro Kiwaki, Higashimurayama, JP;
Takaaki Kojima, Higashimurayama, JP;
Yukihiro Kiwaki, Higashimurayama, JP;
Takaaki Kojima, Higashimurayama, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
A tirecomprises rib-shaped land portionsextending in a tire circumferential direction TC and has a circumferential grooveadjacent to the land portionsand extending in the tire circumferential direction TC. Tread contact surfacesof the land portionsform smooth surfaces with no gap when a normal load is applied and the tread contact surfaces are in contact with a road surface. The circumferential grooveincludes a shallow groove portionextending in the tread-width direction TW, and a deep groove portionadjacent to the shallow groove portionin the tire circumferential direction and extending in the tread-width direction. A deep groove portionis recessed more inwardly in a tire radial direction TR than the shallow groove portionwith a groove bottomof the shallow groove portionbeing an upper end of the deep groove portion