Abstract: Disclosed herein is an example of a tire, and arrangements of multiple tires for a heavy goods vehicle having a tread provided on one side of the equatorial median plane with a sculpture of a first kind and on the other side of the equatorial median plane with a sculpture of a second kind, the first kind of sculpture comprising at least three grooves of generally circumferential orientation. The tired disclosed herein is provided to avoid having to change tires at the change of season, notably of the arrival of winter, on a heavy goods vehicle and more particularly on the drive axles of the said vehicle for which these changes require additional work.

Abstract: Tread having a tread surface intended to come into contact with a road surface and comprising at least one groove of width W and of depth P delimited by two walls facing one another, these walls being joined together by a groove bottom, at least one groove comprising at least one closure device for at least partially closing this groove as it passes through the contact patch, each closure device comprising at least one flexible blade of suitable thickness that allows it to flex under the effect of a circulation of liquid, this at least one flexible blade projecting from the bottom of the groove, each flexible blade being delimited by a contact wall intended to come into contact with the road surface and by end walls each facing a wall delimiting the groove and lateral walls, this tread further comprising at least one passage between the bottom of the groove and each blade of the device, this passage being intended to ensure a minimal flow of water when driving on a water-covered road surface.

Abstract: A tread portion of a pneumatic tire in which a tread pattern is formed includes: a first circumferential groove extending in a tire circumferential direction; a second circumferential groove outward of the first circumferential groove in a tire width direction; a first lug groove group containing first lug grooves disposed in the tire circumferential direction, each first lug groove extending, inclined with respect to the tire width direction, from the second circumferential groove toward the first circumferential groove; and a second lug groove group containing second lug grooves disposed in the tire circumferential direction, each second lug groove being disposed between the first circumferential groove and the second circumferential groove with both ends disposed at a position spaced apart from the first circumferential groove, the second circumferential groove, and the first lug grooves, and intersecting with at least two of the first lug grooves.

Abstract: An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. First and second middle sixths of the tread extend between inner circumferential planes and middle circumferential reference planes one-sixth of the tread width from the inner circumferential reference planes. Outer sixths extend between the middle circumferential reference planes and outer circumferential reference planes disposed one-sixth of the tread width from the middle planes. Net tread volume ratio is approximately 40 percent, where between 36 and 39 percent of lug volume is in the inner sixths, between 32 to 35 percent in the middle sixths, and 27 to 30 percent in the outer sixths of the tread.

Abstract: In a pneumatic tire, shoulder blocks are formed with one of two types of values for block width measured in the tire circumferential direction. A cross-sectional shape of a tread ground contact edge of the shoulder blocks with the smaller block width value when sectioned in a plan that includes a tire axial center is formed with a squared portion formed by a curved line having a radius of curvature of 10 mm or less, or is formed with a squared portion taper cut along a straight line having a length of 10 mm or less. A cross-sectional shape of a tread ground contact edge of the shoulder blocks with the larger block width value when sectioned in the plan that includes the tire axial center is formed with a rounded portion formed by a curved line having a radius of curvature of from 30 mm to 60 mm inclusive.

Abstract: This invention relates generally to tires having multiple carcasses that wrap around multiple bead cores on a single side of the tire, and, more specifically, to a tire that has a bead core locking insert that eliminates a pullout step for one of the carcass plies or bands during fabrication, This step includes wrapping one of the plies or bands completely around said multiple bead cores that are found on a single side of the tire. In certain embodiments, the tire is an aviation tire that has bands of multiple plies that are wrapped about multiple bead cores found on each side of the tire. The bead core locking insert is found below the multiple bead cores found on each side of the tire and is adjacent to the bands that wrap around the inside and outside head cores, thereby locking these beads and associated bands together.

Abstract: The invention relates to pneumatic tires having treads of a cap/base configuration where the outer tread cap rubber layer contains lugs with intervening grooves which extend to the running surface of the tread cap and wherein at least one of said grooves is contained in a rubber block within the tread. For this invention, the tread groove-containing rubber block joins the tire carcass and extends radially outward through the tread base rubber layer and into the outer tread cap rubber layer.

Abstract: A pneumatic tire having a specified rotational direction and including land portions formed compartmentally on the tread of the pneumatic tire by disposing plural inclined grooves extending from both tread ends respectively toward the tire equator and inclined toward the rotational direction with respect to a tire width direction, and also including branch grooves on the tread, each of the branch grooves diverging from a portion of the inclined groove within an area till ¼ of the tread width from the tread, extending to the tire equator in the opposite tire circumferential direction of the inclined groove with respect to the tire width direction and terminating within the land portions.

Abstract: The invention provides a pneumatic tire which can reduce a rolling resistance while maintaining an wear resistance. Among a cap portion in a center area, at least the cap portion of a center land portion is provided with a cap front layer which includes a surface, and a cap inner layer which is laminated in an inner periphery of the cap front layer. A loss tangent of the cap front layer is set to be smaller than a loss tangent of the cap inner layer and be smaller than a loss tangent of the cap portions in the shoulder areas.

Abstract: A method suitable for solid freeform fabrication is disclosed. The method comprises mixing respective amounts of a plurality of materials such as to provide a building material characterized by at least one attribute, and using the building material for fabricating a three-dimensional object.

Abstract: A tire (1) is provided with multiple projection parts (500) in a groove bottom (50B2) of a groove portion. The projection parts (500) extend from one side wall (50B1) to the other side wall (50B3) opposed to the one side wall (50B1), the side walls forming the groove portion. The projection parts (500) are arranged at predetermined intervals in the groove portion. A relationship of 0.75 L?P?10 L is satisfied where L denotes a length of the projection parts (500) and P denotes the predetermined intervals. In addition a relationship of 0.4?FW/W<1 is satisfied, where W denotes a groove width of the groove portion and FW denotes a length of the projection parts (500) in an orthogonal direction which is orthogonal to the extending direction of the groove portion.

Abstract: A pneumatic tire having enhanced on-ice braking performance achieved by further increasing the amount of water that can be sucked up into sipes. In the pneumatic tire, blocks (26) partitioned by circumferential grooves and lateral grooves are formed in the tread. A sipe (28) is formed in a block (26), and a fine structure (32) having a height in the range of from 1/50 of the sipe width t to less than 1/10 of the sipe width t is formed on a sipe wall surface. This reduces fluid friction coefficient of water relative to the sipe wall surface to a lower level than conventional products. As a result, when water staying on ice comes into contact with the sipe wall surface, the water is more easily sucked up into the sipe. The construction increases the amount of water that can be sucked up into the sipe (28) or the removal amount of water that stays on ice etc., and this enhances braking performance (friction characteristics) on ice.

Abstract: Disclosed is a tire-reinforcing steel cord for a radial tire. The tire-reinforcing steel cord has a double layer structure including a first-layer core and a second-layer core provided on the surface of the first-layer core. The first-layer core has an elliptical or rectangular cross section. The tire-reinforcing steel cord can improve processability, fatigue characteristics, and rolling resistance performance of a tire, resulting in improved fuel efficiency. A radial tire using the tire-reinforcing steel cord is also disclosed.

Abstract: In a pneumatic tire, a belt layer includes an inner-side cross belt and an outer-side cross belt having an absolute value of belt angle with respect to a tire circumferential direction of not less than 46 degrees and not more than 80 degrees and having belt angles with signs that are opposite to each other; and a circumferential reinforcing layer having a belt angle with respect to the tire circumferential direction within the range of ±5 degrees and disposed between the inner-side cross belt and outer-side cross belt. Also, a distance Gcc on a tire equatorial plane from a tread profile to a tire inner circumferential surface and a distance Gsh from a tread edge to the tire inner circumferential surface satisfy a relationship 1.10?Gsh/Gcc.

Abstract: A pneumatic tire has an inboard tire tread edge and an outboard tire tread edge positioned towards the center of a vehicle body and away from the center of the vehicle body, respectively. The tire tread is divided by circumferentially continuously extending main grooves into a center land portion, a pair of middle land portions and a pair of shoulder land portions. In a meridian section of the tire, a center profile of a tread of the center land portion and a middle profile of a tread of each of the middle land portions protrude convexly, radially outwardly from a virtual tread profile defined as smoothly passing through the axial ends of the treads of the center land portion and the middle land portions. The peak of the center profile and the peak of the middle profile are off-centered toward the outboard tire tread edge.

Abstract: Stepped sections (110) whereby the height of a block (100) gradually decreases towards the outside of the tire peripheral direction from the center of the block (100) are formed in a peripheral direction end section (160) of the block (100). The stepped sections (110) have a first stepped surface (111a) and a second stepped surface (121a). A stepped surface (110a) extends from an outside end section (140) towards an inside end section (150).

Abstract: Provided is a pneumatic tire capable of yielding excellent water-draining performance, while reducing air column resonance. This pneumatic tire (1) has a tread (3) and at least one ply (2) arranged toward the interior of the tread in the radial direction. The tread has at least one main channel (4) and a flexible fence (5) formed inside the main channel. The main channel has a bottom (413) and opposing first and second wall surfaces (411, 412). The flexible fence extends along the width of the main channel so as to block at least 70% of a cross sectional area of the main channel, and is arranged at intervals so that at least one is present in the main channel in the tread footprint when the tire rolls. A plurality of recesses having an opening that opens in the main channel are formed on the bottom, first wall surface and/or second wall surface of the main channel, the flexible fence being connected to the recess and extending into the main channel via the opening of the recess.

Abstract: In a pneumatic tire 1, a side surface (101), on a buttress portion (14) side, of a land portion block (100) is inclined to the inside of the land portion block (100). The length (Lb1), in a tread width direction, of an and portion (100B) of the land portion block (100) is smaller than the length (La1), in the tread width direction, of an end portion (100A). The end portion (100B) is located at a rear side in a rotational direction (R) in which the pneumatic tire (1) installed on a vehicle rotates when the vehicle moves forward, and the end portion (100A) is located at a front side in the rotational direction (R).

Abstract: Tire for a heavy goods vehicle comprising a tread of total thickness E and total volume V, having a tread surface intended to come into contact with a roadway, at least one cavity or groove that is continuous in a main direction, and delimited by side walls connected by a bottom, a cross section, the points furthest towards the inside of the bottom of each cavity defining a bottom line, wherein each cavity or groove comprises a plurality of open sections open onto the tread surface in the new state and a plurality of closed sections, connected to the open sections being arranged in alternation, each closed section being spaced away from the tread surface by a bridge of rubber, wherein the points on the bottom line of said cavity or groove lie at distances between a minimum distance Dm and a maximum distance DM with respect to the tread surface, the bottom line of each cavity or groove following a wavy geometry of positive amplitude equal to the difference (DM?Dm).

Abstract: A pneumatic tire includes a tread portion with an asymmetric pattern including an outboard shoulder main groove, an inboard shoulder main groove, an outboard shoulder portion between the outboard shoulder main groove and an outboard tread edge, a middle portion between the outboard shoulder main groove and the inboard shoulder main groove, and an inboard shoulder portion between the inboard shoulder main groove and an inboard tread edge, wherein the outboard shoulder portion is provided with a three dimensional sipe that has a pair of sipe surfaces extending to a depth direction of the sipe while changing its direction or opening configuration, and the inboard shoulder portion or the middle portion is provided with a two dimensional sipe that has a pair of sipe surfaces extending to a depth direction of the sipe while maintaining its direction and opening configuration.