About 40 results
https://drivepatents.com/patents/1067799 · 3 May 2006
In a pneumatic tire that has four grooves in the circumferential direction, since an optimal ground-contact pressure at edges of each rib is influenced by a relative ratio to a ground-contact pressure at the middle position of each rib, groove angles and a...
https://drivepatents.com/patents/1069767 · 1 Mar 2006
A pneumatic tire (10) comprising: a tread (12); a lug groove (14) extending from a shoulder side of said tread (12) toward a tire central plane (CL), the lug groove (14) being provided in plurality at said tread (12) in the tire circumferential direction (...
https://drivepatents.com/patents/1073646 · 28 Sep 2005
Automobile tires with running strips, peripheral slots (3) of positive profile, e.g. running strips (3) of blocks in a block series with pocket slots (sic)(4, 5) different from peripheral slots (3), where pocket slots (5) continuously alter their inclinati...
https://drivepatents.com/patents/1074643 · 31 Aug 2005
A pneumatic tire which positively discharges water having flowed into a groove extending in the tire circumferential direction and enhances capability of preventing hydroplaning. The groove is provided in the tread face of the tire and extends in the tire ...
https://drivepatents.com/patents/1076820 · 15 Jun 2005
Disclosed is a tread for a pneumatic tire. The tread has a plurality of grooves (10,12). The grooves (10,12) have a base (20) defining the depth of the groove relative to the tread surface, opposing groove walls (16, 18), and a centerline (CL) equidistance...
https://drivepatents.com/patents/1082769 · 3 Nov 2004
A pneumatic tire 10, in which at least one rib groove 12 extended in a tire circumferential direction is formed on a tread surface portion T of a tread portion 11, and portions 13 discontinuous in terms of rigidity are formed in a circumferential direction...
https://drivepatents.com/patents/1099837 · 11 Dec 2002
Tread (1) for a tire having a preferred rolling direction, this tread comprising grooves (2) with general circumferential orientation delimiting ribs (30, 31, 32, 33, 35), at least one of the ribs being provided near each of its edges with a plurality of i...
https://drivepatents.com/patents/1111378 · 1 Aug 2001
A pneumatic radial tire (11) having good drainage properties and capable of reducing air-column-tube resonance sound in circumferentially extending grooves to decrease noise, comprising: a radial carcass layer (16), a pair of bead cores (14), a belt layer ...
https://drivepatents.com/patents/1111278 · 1 Aug 2001
An auxiliary groove (16) is formed in tire circumferential direction on a tire central plane of an pneumatic tire according to the present invention. This auxiliary groove (16) is formed, whereby a negative ratio of a center region other than the lug groov...
https://drivepatents.com/patents/1112358 · 13 Jun 2001
A tyre comprises a tread portion (2) in which a mould parting line by a single-split mould runs on or near the tyre equator (CO). In a central part (2C) of the tread portion in which tread grooves (4) are provided, the groove edges which are stroked by tyr...