About 136 results
https://drivepatents.com/patents/959686 · 24 Jun 2015
Heavy duty tire, wherein a distance t1 from the radially outer surface of a belt layer (7) to the tire's inner surface is 15 to 23 mm when measured along a tire radial direction line (13) passing through the bottom of a shoulder main groove (12); the width...
https://drivepatents.com/patents/950402 · 10 Jun 2015
A pneumatic tire is provided in the tread portion 2 with a main groove 10 and an axial groove 20. The groove-sidewall surface 16 on each side of the main groove 10 is formed by a circular-arc-like surface having a radius R1 of curvature and being convex to...
https://drivepatents.com/patents/950906 · 13 May 2015
Pneumatic tire of which the stiffness of tread blocks is improved in a circumferential direction, wherein first grooves (11) of first block (20) with a short pitch length are formed to have a depth shallower than the depth second grooves (21) of a second b...
https://drivepatents.com/patents/951784 · 18 Mar 2015
Noise performance is improved without deteriorating drainage performance. A pneumatic tire has a tread portion 2 in which at least one main groove 3 continuously extends in a tire circumferential direction, and at least one land portion is adjacent to the ...
https://drivepatents.com/patents/962925 · 25 Feb 2015
A tire 1 includes plural land portions 40 formed on a tread portion 10. The plural land portions 40 are segmented by a circumferential direction groove 30 extending in a tire circumferential direction L and a width direction groove 20, or segmented by an e...
https://drivepatents.com/patents/964135 · 7 Jan 2015
A pneumatic tire is provided with a center land portion (10) between two zigzag crown main grooves (3), and two middle land portions (20) between two zigzag shoulder main grooves (4) and the two crown main grooves (3); each center block (11) is provided wi...
https://drivepatents.com/patents/965602 · 31 Dec 2014
A pneumatic tire has a high wet performance with keeping steering stability and wear resistance. Each of the middle land portions (12) is provided with middle sipes (15) and a middle sub-groove (16). Each of the middle sipes (15) has an arc-like shape such...
https://drivepatents.com/patents/966725 · 3 Dec 2014
A pneumatic tire comprises a tread portion provided with blocks (23, 24, 25) each provided with a first variable depth sipe (38) and a second variable depth sipe (39) each having both axial ends opened at edges of the block on both sides thereof in the tir...
https://drivepatents.com/patents/968979 · 8 Oct 2014
A heavy duty pneumatic tire includes a tread portion provided with at least three circumferential main grooves, and a plurality of lateral grooves extending between adjacent main grooves or between one main groove and a tread edge, to form at least one blo...
https://drivepatents.com/patents/969862 · 24 Sep 2014
An object of the present invention is to adequately control relationship between a cross sectional width SW and an outer diameter OD of a pneumatic radial tire for a passenger vehicle. Specifically, a ground contact surface 1 of the tread of the pneumatic ...