Pirelli Pneumatici S.p.A.
|Pirelli Pneumatici S.p.A. Patent applications|
|Patent application number||Title||Published|
|20140014247||MOTOR VEHICLE TIRE HAVING TREAD PATTERN (as amended herein) - A tyre for a motor vehicle includes a tread and two shoulders. The tread includes a circumferential row of blocks between first and second circumferential grooves. Each of the blocks is delimited by a section of the first circumferential groove and by first and second transverse grooves that terminate at a common vertex spaced from the second circumferential groove. The common vertex is separated from the second circumferential groove by a continuous circumferential tread rib. The second transverse groove delimits one of the blocks and is separated from the first transverse groove that delimits a circumferentially adjacent block by a solid tread portion. The solid tread portion extends from the first circumferential groove to the continuous circumferential tread rib. The common vertex of each block is located at a position axially intermediate the first circumferential groove and a portion of one of the transverse grooves that delimits the block.||01-16-2014|
|20090241747||Method and apparatus for cutting a ribbon of rubber-coated fabric - A method for cutting a ribbon of rubber-coated fabric includes dragging a free end of the ribbon past a working position of a punching device, forming a notch between two adjacent reinforcing cords of the ribbon using the punching device, moving a counter-blade of the punching device away from the working position, inserting at least one cutting blade through the notch, and performing first and second cuts of the ribbon. An associated apparatus includes a punching device and a cutting device. The punching device includes an incision tool, an abutting counter-blade, and control devices for moving the incision tool and the abutting counter-blade toward and away from the ribbon. The cutting device includes at least one cutting blade and a control device for moving the at least one cutting blade toward and away from the ribbon.||10-01-2009|
|20090212467||Expandable Bladder - An expandable bladder for manufacturing pneumatic tyres is used in combination with a vulcanisation apparatus including, for example, a mould having a plurality of sidewall plates and tread sectors that, when the mould is closed, delimit a moulding cavity suitable for housing the green pneumatic tyre to be cured. The expandable bladder includes an elastomeric material obtained by curing an elastomeric composition which includes at least one butyl rubber and at least one compound having at least one double bond and an at least partially fluorinated alkyl or polyoxyalkylene chain.||08-27-2009|
|20090176119||Metal Cord and Process for Manufacturing a Metal Cord - A metal cord includes at least one preformed elementary metal wire. The metal cord has an elongation at break, measured on the bare cord, higher than or equal to 3%, preferably 4% to 6%; an elongation at break, measured on the rubberized and vulcanized cord, which differs in an amount not higher than or equal to 15%, preferably 2% to 10% with respect to the elongation at break measured on the bare cord; a part load elongation, measured on the bare cord, higher than or equal to 0.4%, preferably 0.5% to 1.5%; a part load elongation, measured on the rubberized and vulcanized cord, which differs in an amount not higher than or equal to 15%, preferably 0.5% to 10%, with respect to the part load elongation measured on the bare cord.||07-09-2009|
|20090125251||METHOD FOR DETERMINING A FORCE AT THE HUB OF A WHEEL OF A VEHICLE WHILE TRAVELING AND WHEEL SUITABLE FOR ALLOWING SAID METHOD TO BE CARRIED OUT - A method for determining the force at the hub of a wheel of a vehicle while traveling. The wheel includes a rim and at least one deformation sensor directly associated with the rim in at least one predetermined position and arranged according to at least one predetermined orientation. The method includes the steps of detecting at least one deformation component of the rim during travel through the at least one deformation sensor; applying to the at least one deformation component, during travel, a correlation parameter characteristic of the rim, between the force at the hub and the relative deformation of the rim to determine at least one force component at the hub correlated with the at least one deformation component of the rim. The determining of the correlation parameter preferably takes place through experimental tests that include the steps of providing a sample wheel having a rim substantially the same as that of the wheel and determining at least one correlation coefficient between at least one force component acting upon the sample wheel at the hub along at least one predetermined direction and at least one respective deformation component of the rim of the wheel.||05-14-2009|
|20090056847||STUDDED TIRE - A tire for vehicle a wheel includes a carcass structure including at least one carcass ply shaped in a substantially toroidal configuration, the opposite lateral edges of which are associated with respective right-hand and left-hand bead wires enclosed in respective beads; a belt structure applied in a circumferentially external position relative to the carcass structure; a tread band circumferentially superimposed on the belt structure, the tread band including a radially outer surface with a tread pattern including a plurality of longitudinal and transverse grooves which define a corresponding plurality of blocks and/or ribs; a plurality of studs partially projecting from the radially outer surface of the tread band; and a pair of side walls applied laterally on opposite sides relative to the carcass structure. The tread band includes a crosslinked elastomeric composition including at least one diene elastomeric polymer and at least one layered nanosized inorganic material as reinforcing filler.||03-05-2009|
|20080290539||Method for Manufacturing a Tyre - A method of manufacturing tyres by disposing an uncured elastomeric material on a substantially rigid toroidal support so as to form a green tyre. The green tyre and the toroidal support are then disposed within a vulcanization mold in which a molding cavity is defined, so as to mold and cure the green tyre. The molding cavity includes at least a portion in which molding and curing are carried out at a constant volume. The disposition of the elastomeric material onto the rigid toroidal support is carried out by controlling the volume distribution of the elastomeric material onto the toroidal support, so as to fit a predetermined curve of excess material volume, i.e., a curve showing a difference between the volume distribution of the material forming the green tyre and the available volume in the portion of the molding cavity adapted for molding and curing the green tyre at constant volume, versus a predetermined, e.g. radial, direction.||11-27-2008|
Patent applications by Pirelli Pneumatici S.p.A.