Patent application number | Description | Published |
20080196806 | High-Performance Type for a Motor Vehicle - A tyre for a motor vehicle, in particular a high-performance tyre, is provided with a tread having an overall width. The tread includes first and second circumferential grooves which separate a central region from first and second shoulder regions. The tread includes a circumferential cut in the first shoulder region at a distance from the first circumferential groove; and a plurality of circumferentially repeated transverse groove modules. A first shoulder portion of each transverse groove module includes at least one main transverse groove which includes a first substantially rectilinear portion inclined by a first angle with respect to a radial plane, a second substantially rectilinear portion inclined by a second angle with respect to the radial plane and arranged between the circumferential cut and the first circumferential groove, and a first curve portion connecting the first and the second substantially rectilinear portions. | 08-21-2008 |
20090199943 | On/Off-Road Tire For A Motor Vehicle - A tire having a tread wherein a first shoulder region includes a plurality of shoulder blocks that are circumferentially separated by shoulder transverse grooves. A central region includes a plurality of substantially transverse grooves extending from a first circumferential groove toward the equatorial plane, wherein two circumferentially consecutive substantially transverse grooves delimit a central area. The central area includes a first central block; a second central block having one side forming a part of the wall of the first circumferential groove; and a third central block circumferentially shifted with respect to the first central block and positioned at a distance from the first circumferential groove, the third central block being separated from the second central block by a central transverse groove which is inclined with respect to the equatorial plane. The substantially transverse grooves have respective end portions at a distance from the equatorial plane. | 08-13-2009 |
20100140847 | Process and apparatus forr vulcazation and moulding of vehicle tyres - A process for vulcanization and moulding of a pneumatic tyres in tyre manufacture is carried out with an apparatus including a vulcanisation mould and including: a pair of plates adapted to be moved close to each other; a plurality of circumferentially distributed mould sectors; the plates and sectors being mutually movable between an open condition at which they are spaced apart to enable loading of the tyre being worked, and a closed condition at which they define a moulding cavity having a geometric configuration matching the outer surface of the tyre to be obtained. The process includes the steps of: loading the green tyre into the mould; vulcanising the tyre: opening the mould; and exerting a radially outward thrust action on each mould sector. | 06-10-2010 |
20100294408 | Pneumatic Tire Having an Asymmetric Tread Profile - A tire having (i) an asymmetric tread profile with a shoulder drop difference of 0.3 to 0.9; and (ii) an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio and the outer void/solid ratio of 1.1 to 1.50. By the above combination of features, handling and aquaplaning performance is remarkably improved even at high operating speeds without negatively affecting the wear resistance of the tread band. | 11-25-2010 |
20100303941 | APPARATUS FOR VULCANIZATION AND MOULDING OF VEHICLE TYRES - An apparatus for moulding and vulcanisation of tyres for vehicle wheels includes a vulcanisation press and a vulcanisation mould associated with the press. The apparatus includes a pair of plates and a plurality of mould sectors that are mutually movable between an open condition and a closed condition; at least one plurality of sector carriers designed to support the mould sectors and movable together with the sectors; and a plurality of guide means on which the plurality of sector carriers slide for movement of the mould sectors from the closed condition to the open condition and vice versa, at least part of the sector carriers having at least one spring device designed to exert a thrust action adapted to ensure sliding of the sector carrier on the guide element in a substantially parallel direction. | 12-02-2010 |
20110108175 | RAIN TYRE - A tyre includes a tread band provided with a tread pattern including a first and a second portion of tread pattern, repeated just the same along the circumferential extent of the tyre, forming respectively a short pitch module and a long pitch module of the tread pattern, wherein the modules include a respective first transverse groove in which, starting from an axially outer first end thereof toward an opposed axially inner second end thereof, an initial section and a section of enlarged cross-section are formed, the latter being blind, at least on its axially inner side, when in the footprint area. The initial section and the section of enlarged cross-section have, respectively, a first width and a second width, and the ratio between the second width and the first width of a first transverse groove belonging to a short pitch module is greater than the ratio between the second width and the first width of a first transverse groove belonging to a long pitch module. | 05-12-2011 |
20120118457 | WINTER TYRE - A tyre includes: a tread band on which is defined a radially outer tread surface, a first plurality of blocks provided on the tread band, and at least a first sipe of the restrained type extending on at least one block of the first plurality in a substantially axial direction defined on the tread band. The first sipe is configured so as to define, between a first and a second block portion divided by the first sipe, at least two separate and distinct couplings of the male/female type, such as to prevent the mutual displacement of the block portions in any direction which, at the block, is substantially tangential to the tread surface, and such as to permit mutual displacement of the block portions in a direction incident to the tread surface. In addition, the first sipe does not intersect any other sipe of the restrained type within the block. | 05-17-2012 |
20130213540 | HIGH PERFORMANCE RAIN TYRE - A high performance rain tyre includes a tread band, having an inner portion and an outer portion as well as a central zone. There are formed in the tread band: two circumferential grooves in the inner portion, a central circumferential groove and a plurality of inner transverse grooves and a plurality of outer transverse grooves, wherein the inner transverse grooves include a central inner section which defines an angle with respect to the equatorial plane of between approximately −95° and approximately −135° and the outer transverse grooves include a central outer section which defines an angle, relative to the equatorial plane, of between approximately +125° and approximately +165°. | 08-22-2013 |