Abstract: A pneumatic tire includes a block formed by a main groove extending in a tire circumferential direction and a lateral groove extending in a tire width direction. The block includes a first inclined surface provided at a corner portion between a first side surface and a top surface, the first inclined surface extending obliquely toward a groove bottom of the main groove or the lateral groove defined by the first side surface, and a first narrow groove extending from a center of the block toward the first side surface, an outer end of the first narrow groove being located on the first inclined surface, the first narrow groove being smaller in groove width than the main groove and the lateral groove.

Abstract: A tire has a tread portion 2 including a first land portion 11. The first land portion 11 includes a first circumferential edge 11a, a second circumferential edge 11b, and a tread surface between the first circumferential edge 11a and the second circumferential edge 11b. On the tread surface, a first inclined groove 21 extending from the second circumferential edge 11b to the first circumferential edge 11a side, a second inclined groove 22 extending from the second circumferential edge 11b to the first circumferential edge 11a side so as to be inclined in a direction opposite to that of the first inclined groove 21, and a triangular block 35 demarcated by the first inclined groove 21 and the second inclined groove 22, are formed. A curved groove 15 curved so as to be convex on the second circumferential edge 11b is formed on the triangular block 35.

Abstract: The present disclosure relates generally to carbon fibers having high tensile strength and modulus of elasticity, as well as a process for the manufacture of such carbon fiber. The process comprises spinning a polymer/solvent solution into a solvent/water bath in the range of 78%-85% solvent, thereby producing a dense fiber structure, and subsequently carbonizing the polymer precursor fiber at a lower than typical carbonization temperature to form carbon fibers.

Abstract: A tread (1) for a heavy-duty vehicle tyre, having a tread surface (10) and an undulating groove (2) formed therein, having, when new, external cavities (21) open onto the tread surface (10) and internal cavities (22) entirely situated there-beneath when new, these cavities (22) connected to cavities (21) by linking cavities (23), each external cavity (21) intersecting the tread surface (10) along a corner edge contour delimiting an opening (210) having two end regions (A1, A2) and a surface area Se measured on the tread surface (10). In each end region (A1, A2) at least one thin blade (41, 42) of rubbery material is formed which is secured to at least one of the walls delimiting the undulating groove to reduce the surface area of the opening (210) of each external cavity (21) viewed from the tread surface (10) when new.

Abstract: Tread (2) of a radial tire for a heavy vehicle. The tire alternatingly rolls in laden and unladen states on descent and ascent, respectively. Tread (2) has total width WT and comprises first median portion (21) having median width Wc, where 0.2WT?Wc?0.5WT. Tread (2) is axially delimited by second and third lateral portions (22, 23) having respective lateral widths (WS2, WS3) at least equal to 25% and at most equal to 40% of total width WT. Angle A51 of leading face (51) of every element in relief (31) of first median portion (21) is strictly greater than angle A61 of trailing face (61) of said element in relief (31). Angle (A52, A53) of leading face (52, 53) of every element in relief (32, 33) of each of the second and third lateral portions (22, 23) is strictly less than angle (A62, A63) of trailing face (62, 63) of said element in relief (32, 33).

Abstract: A pneumatic tire has paired bead portions, paired sidewall portions, a tread portion, a plurality of lug grooves extending from a shoulder area of the tread portion to reach a buttress area of the sidewall portion, and a block defined by the plurality of lug grooves. The block includes a shoulder block provided in the shoulder area and a buttress block provided in the buttress area. At least some of the plurality of lug grooves end at a connecting portion connecting the paired buttress blocks, the connecting portion is provided on an inner side in the tire diametrical direction of position that are 50% of length in the tire diametrical direction of the buttress block from upper end position of the buttress block. A step or a protrusion where the buttress block has a largest upraised height is provided in the tire diametrical position of the connecting portion.

Abstract: A pneumatic tire having a tread, a sidewall, a bead portion having a bead core, a bead reinforcing layer reinforcing the bead portion, and a carcass ply moored on a bead core of the bead portion, wherein the bead reinforcing layer and adjacent members adjacent to the bead reinforcing layer are each composed of a rubber composition containing an amine type antioxidant, 0.3 to 8 parts by mass of the amine type antioxidant is contained in the bead reinforcing layer based on 100 parts by mass of the rubber component, and the adjacent member adjacent to the bead reinforcing layer and the bead reinforcing layer satisfy the following formula: 2?B/A?8 A: Content (wt %) of amine type antioxidant in bead reinforcing layer. B: Content (wt %) of amine type antioxidant in the adjacent member.

Abstract: In a tire 2, in a normal state, a profile of a tread surface 22 includes a crown circular arc as a circular arc representing a profile of a portion including an equator PC, and the crown circular arc has a radius of not less than 1600 mm and not greater than 2000 mm. On a ground-contact surface 52 obtained when a load is applied to the tire 2 in the normal state and the tread surface 22 is brought into contact with a flat road surface, an ultra-light load shape index F30 is higher than a light load shape index F60, the ultra-light load shape index F30 is not less than 1.10 and not greater than 1.20, and the light load shape index F60 is not less than 1.04 and not greater than 1.14.

Abstract: A noise damper, annulus for reducing tire noise, and tire and noise damper assembly are disclosed. The noise damper, annulus for reducing tire noise, and tire and noise damper assembly mitigate sound produced by a moving tire. The noise damper and annulus for reducing tire noise may move within a tire cavity.

Abstract: A tire having an outer middle land portion demarcated between an outer shoulder circumferential groove and an outer crown circumferential groove and located at an outer side of a vehicle when the tire is mounted on the vehicle, and an inner middle land portion demarcated between an inner shoulder circumferential groove and an inner crown circumferential groove and located at an inner side of the vehicle when the tire is mounted on the vehicle formed in a tread portion. The outer middle land portion has first outer middle sipes extending from the outer crown circumferential groove toward the outer shoulder circumferential groove and terminating within the outer middle land portion. The inner middle land portion has first inner middle sipes extending from the inner shoulder circumferential groove toward the inner crown circumferential groove and terminating within the inner middle land portion.

Abstract: A tire comprises a tread portion comprising three main grooves and four land portions. The main grooves are a first shoulder main groove, a second shoulder main groove and a crown main groove. The land portions include a first middle land portion between the first shoulder main groove and the crown main groove, a second middle land portion between the second shoulder main groove and the crown main groove. The first middle land portion is disposed so that the tire equator is positioned in the ground contact surface thereof. Each of the first middle land portion and the second middle land portion is provided with a plurality of narrow grooves so as to exhibit excellent steering stability and ride comfort.

Abstract: The tire whose mounting position relative to a vehicle is specified, comprises a tread portion having a first tread edge and a second tread edge, and provided with three main grooves and four land portions. The main grooves include a first shoulder main groove, a second shoulder main groove, and a crown main groove. The land portions include a first middle land portion and a second middle land portion. The first middle land portion is disposed on the tire equator. The first middle land portion is provided with first transverse narrow grooves. The first transverse narrow groove comprises a first deep portion, a second deep portion and a first shallow portion therebetween to improve steering stability and ride comfort.

Abstract: Provided is a pneumatic tire with a side pattern including a ridge pattern region provided with first ridges extending continuously in one direction at an interval; and a marking display region bordering and being surrounded by the ridge pattern region, the marking display region displaying markings including one or more of a letter, a number, a symbol, and/or a figure. The marking display region includes: a bordering ridge that borders an outer edge of the markings; and second ridges provided in an inner region of the markings and extending continuously in one direction at an interval from each other. Ends of the first ridges and the second ridges are connected to the bordering ridge, and apexes of the first ridges and the second ridges are flush with and connected to an apex of the bordering ridge.

Abstract: A tire includes side protectors arranged in a sidewall portion. Each of the side protectors is provided with a groove. The groove includes a first inclined groove portion inclined to a first side with respect to the tire radial direction, or a second inclined groove portion inclined to a second side opposite to the first side with respect to the tire radial direction. The side protectors include first protectors each provided with the first inclined groove portion, and second protectors each provided with the second inclined groove portion.

Abstract: A tire 1 comprises a tread portion 2 whose position when mounted on a vehicle is specified. The tread portion 2 comprises an outer tread edge (To), an inner tread edge (Ti), a plurality of main grooves 10, and a plurality of land regions 15. The main grooves 10 include a first main groove 11 whose groove edges are both positioned on an inner-tread-edge-(Ti) side of a tire equator (C), a second main groove 12 arranged on an inner-tread-edge-(Ti) side of the first main groove 11, and a third main groove 13 arranged between the tire equator (C) and the outer tread edge (To) and having a groove width smaller than the first and second main grooves 11 and 12. The land regions 15 include an inner middle land region 16 and an outer middle land region 17 having an axial width larger than the inner middle land region 16.

Abstract: In one aspect the present disclosure relates to a system for forming a three dimensional (3D) object from a volume of photo-responsive material contained within a material container. A plurality of optical projection subsystems are adapted to be arranged circumferentially around a material container containing the volume of photo-responsive material, and are controlled by a controller. The optical projection subsystems direct optical projections at a plurality of angles ? through the volume of photo-responsive material. The optical projections are further directed about a z axis extending through the volume of photo-responsive material.

Abstract: A tire includes a tread portion including at least one land region extending in a tire circumferential direction. The land region is provided with a plurality of axial groove portions curved so as to protrude in one direction in the tire circumferential direction in a plan view. The axial groove portions include first axial groove portions and second axial groove portions having different degree of curvature from the first axial groove portions.

Abstract: A ply of a carcass of a pneumatic radial tire includes a turn-up ply and a down ply. The turn-up ply includes: a main body portion disposed between a pair of bead cores; turn-up portions around the bead cores from an inside toward an outside in a tire width direction. The down ply extends up to an inside in a radial direction of the bead cores so as to cover the turn-up ply including the turn-up portions from an outside. A curvature is formed at either one of a down ply predetermined portion of the down ply, which covers a turn-up end portion of the turn-up portion of the down ply from an outside in the tire width direction, and a turn-up ply portion that covers the turn-up end portion of the turn-up portion in the main body portion of the turn-up ply from inside in the tire width direction.

Abstract: Provided is a pneumatic tire. A sipe includes, on each of a leading side edge and a trailing side edge, a chamfered portion and a non-chamfered region in which no other chamfered portion is present. A maximum depth of the chamfered portion is shallower than a maximum depth of the sipe, and a width of the sipe is substantially constant. In a cross-sectional view perpendicular to a lengthwise direction of the sipe, at least one chamfered portion has a profile line that projects outwards in the radial direction beyond a chamfer reference line connecting the end portions of the chamfered portion, and a cross-sectional area of a chamfered region that is surrounded by the profile line, the sipe, and a tread contact surface of a tread portion is smaller than a cross-sectional area of a reference region surrounded by the chamfer reference line, the sipe, and the tread contact surface.

Abstract: A pneumatic tire includes a first main groove in a circumferential direction outward of an equatorial plane in a vehicle width direction, a second main groove in the circumferential direction at a position closer to the equatorial plane than the first main groove, a third main groove in the circumferential direction at a position inward of the equatorial plane in the vehicle width direction, and a fourth main groove in the circumferential direction at a position farther from the equatorial plane than the third main groove; relationships 1.05?G1/G3?1.25, 1.20?G2/G3?1.40, and 1.10?G4/G3?1.30 are satisfied; and relationships G3<G1<G2 and G3<G1<G4 are satisfied, where G1 is a first main groove width, G2 is a second main groove width, G3 is a third main groove width, and G4 is a fourth main groove width.