Abstract: A tire (1) for a heavy goods vehicle having a tread (2) with low road noise. Two consecutive rows of blocks are in the form of a chevron (6) of the tread (2) and are separated by a transverse cut-out in the form of a chevron (52) which extends continuously from one edge of the tread to the other so that the leading or trailing edges (41) of the blocks (4) are positioned in the same line (L) and any transverse cut-out in the form of a chevron (52) has a mean line (Lt) which is constituted by two branches (Lt1, Lt2) which each form, with the axial direction (YY?), a mean angle (B1, B2) at a minimum of 15° and at a maximum of 55°.

Abstract: The surface state of the treads of tires cured in a vulcanization mold manufactured by 3D printing represents an optimal compromise between cost, appearance, and grip performance of the tire. The texture is formed by an arrangement of contiguous elements of pyramidal shape, each element of pyramidal shape having a base of parallelogram type positioned on the tread surface, and an apex situated at a normal distance H from the base in the range 0.15 mm to 0.5 mm.

Abstract: Tread for heavy-duty vehicle tire, having tread surface in the new state, having a first volume of cavities opening onto the tread surface, a second volume of cavities formed entirely under the tread surface and having at least one channel of height Hc delimited by two main walls spaced apart from one another by a width Lc and connected together by a lower part and by an upper part, this channel intended to form, after partial wear corresponding to a thickness Lu, an additional groove, such that each channel has a plurality of extensions forming cavities extending between this channel and the tread surface over a height He at least equal to 20% and at most equal to 75% of the thickness Lu, each extension opening at least into the upper part of the channel through an opening having a cross-sectional area Sa at least equal to 0.8*(Hc*Lc).

Abstract: Tread for heavy-duty vehicle tire, having tread surface in the new state, having a first volume of cavities opening onto the tread surface, a second volume of cavities formed entirely under the tread surface and having at least one channel of height Hc delimited by two main walls spaced apart from one another by a width Lc and connected together by a lower part and by an upper part, this channel intended to form, after partial wear corresponding to a thickness Lu, an additional groove, such that each channel has a plurality of extensions forming cavities extending between this channel and the tread surface over a height He at least equal to 20% and at most equal to 75% of the thickness Lu, each extension opening at least into the upper part of the channel through an opening having a cross-sectional area Sa at least equal to 0.8*(Hc*Lc).

Abstract: Tread with longitudinally oriented grooves (31, 41, 42) at least one is wavy (31) opening onto tread surface (10), at least one rib (21) oriented in the longitudinal direction and delimited by (31) with external cavities (311) opening to tread surface and internal cavities (312) hidden within the thickness of the tread, cavities (311) opening onto the surface (10) when new with a contour (310) having farthest-spaced endpoints A and B separated by a distance Lm, the rib (21) of width Ln having transverse sipes (5), made at a mean pitch Pi, where the length Lm of contour (310) of cavity (311) is equal to or greater than an integer multiple N of the pitch Pi times an amount at most equal to 25% of this integer multiple N of the pitch Pi, when new, N+1 transverse sipes (5) of rib (21) open into cavity (311) bordering the rib.

Abstract: A head bolt tightening tool for a cone crusher head assembly includes a support which is able to support the head assembly non-rotatably on the support, and a reaction arm equipment which is fitted to the support and which is able to hold a head bolt tightening wrench non-rotatably relative to the support.

Abstract: A mechanical support for thermal or electric systems. The support is hollowed, and includes two bearing surfaces, substantially parallel to each other, and separated from each other by a lateral surface defining a perimeter. The lateral surface includes through openings, distributed along at least one row substantially parallel to the bearing surfaces. The support includes at least one stiffening flange, in contact with the lateral surface of the support, all along the perimeter of the lateral surface, on or in the vicinity of the or of each row of through openings.

Abstract: A head bolt tightening tool for a cone crusher head assembly includes a support which is able to support the head assembly non-rotatably on the support, and a reaction arm equipment which is fitted to the support and which is able to hold a head bolt tightening wrench non-rotatably relative to the support.

Abstract: A mechanical support for thermal or electric systems. The support is hollowed, and includes two bearing surfaces, substantially parallel to each other, and separated from each other by a lateral surface defining a perimeter. The lateral surface includes through openings, distributed along at least one row substantially parallel to the bearing surfaces. The support includes at least one stiffening flange, in contact with the lateral surface of the support, all along the perimeter of the lateral surface, on or in the vicinity of the or of each row of through openings.