About 138 results
https://drivepatents.com/patents/1010067 · 17 Aug 2011
A heavy duty tire comprises a tread portion provided with four or five circumferential grooves so as to axially divide the tread portion into five or six rib portions. The five or six rib portions are a pair of shoulder rib portions each provided with shou...
https://drivepatents.com/patents/1011304 · 6 Jul 2011
The present invention provides a tire in which generation of partial wear and groove cracks are suppressed. Specifically, the present invention provides a tire having in a tread surface thereof plural circumferential grooves extending in the tire circumfer...
https://drivepatents.com/patents/1013135 · 11 May 2011
An object of the present invention is to provide a tire possessing improved wear resistance by optimizing configurations of block land portions. The tire is configured such that, in at least two adjacent block land portion arrays 5 sandwiching a circumfere...
https://drivepatents.com/patents/1013196 · 11 May 2011
An object of the invention is to provide a tire and a method of producing the tire, in which tire breakage of a groove fence in vulcanization molding and generation of cracks at a groove bottom can be suppressed, noise is relatively low and uneven wear is ...
https://drivepatents.com/patents/1013612 · 20 Apr 2011
The profile has a set of groove-shaped recesses (17) formed in a radially outward limiting surface (10) of a profile block element (14), where the recesses are arranged one behind the other along an extension of a cutting edge (28) of the profile element. ...
https://drivepatents.com/patents/1013981 · 13 Apr 2011
An object the present invention is to provide a tire having a rib-like land portion and sipes provided therein, in which wear resistance has been enhanced by optimizing the shape of the sipes, while good traction performance on a wet road surface is mainta...
https://drivepatents.com/patents/1014523 · 30 Mar 2011
An object of the present invention is to provide a tire possessing improved partial wear resistance by optimizing shapes and dimensions of a block land portion and its position and arrangement. The tire has plural block land portion arrays 5 formed by a la...
https://drivepatents.com/patents/1015289 · 2 Mar 2011
A pneumatic tire comprises: an axially inner circumferential row (5) of crown blocks (5b) disposed on each side of the tire equator; and an axially outermost circumferential row (6) of shoulder blocks (6b) disposed axially outside thereof. The crown blocks...
https://drivepatents.com/patents/1067747 · 3 May 2006
It is possible to reduce pulling-out resistance of a knife blade from a tire while highly securing fall-preventing effect on block. A tread portion 2 has a block 7 provided with sipeings 10. The sipeing 10 has a zigzag portion 11 in an opening edge shape J...
https://drivepatents.com/patents/1070592 · 25 Jan 2006
A pneumatic tire includes a tread surface (11) on which a plurality of circumferential groove portions (50) is formed. From among the circumferential groove portions (50), a circumferential groove portion (50) situated closest to a shoulder portion side (4...