Class / Patent application number | Description | Number of patent applications / Date published |
152209210 | Protrusion from wall and spaced from the opposite wall | 45 |
20080196807 | Tire Provided with Two Protuberances for Deflecting Lateral Expulsions of Water - Heavy goods vehicle tire including beads, sidewalls and a tread. To deflect the flow of water expelled laterally by this tire while running on a wet road, the tire is provided on each of its sidewalls, and near the tread, with a protuberance. One protuberance is positioned on the tire so as to be effective over a first period of use of the tire and the other protuberance is positioned on the tire so as to be effective after the tread has partially worn away, and after the worn tire has been reversed so as to place such other protuberance to the outside of the vehicle. | 08-21-2008 |
20080257469 | Pneumatic Tire - A pneumatic tire comprising a shoulder rib segmented into a main rib located at the inner side thereof in a width direction of the tire and a thin rib located at the outer side thereof in the width direction of the tire by a thin groove extending along a circumferential direction of the tire, wherein the thin groove includes a large-width portion having a relatively larger groove width and a small-width portion having a relatively smaller groove width continuously formed one after the other along the circumferential direction of the tire, and an inner wall of the large-width portion located at the thin rib side is disposed at a further outer side with respect to an inner wall of the small-width portion located at the thin rib side as viewed in the width direction of the tire, a protruding portion protruding outwardly in the width direction of the tire from an edge line of the thin rib located at the outer side in the width direction of the tire is formed at a position where the large-width portion is disposed in the circumferential direction of the tire. | 10-23-2008 |
20080295937 | Pneumatic Tire - A sipe is formed in a block provided in a tread surface, wide portions extending in a sipe length direction are formed in each of a kick-out side and a step-in side of the sipe, and a total of heights of the wide portions in the kick-out side of the sipe is made larger than a total of heights of the wide portions in the step-in side of the sipe. | 12-04-2008 |
20090145529 | Pneumatic Tire - In a tire, a phase difference L | 06-11-2009 |
20090194212 | TIRE TREAD DISCHARGE GROOVES WITH TEXTURED BASES - The present invention is directed to a pneumatic tire comprising an axis of rotation and a tread. The tread has a plurality of traction elements and a discharge groove. The discharge groove has a base interposed between radially extending sides formed by side walls of the traction elements. The base of the discharge groove defines a matrix of circumferentially extending rectangular ramp structures. One ramp structure of the matrix extends circumferentially, from a radially inner first end portion, in a direction of rotation of the tire and radially outward to a radially outer second end portion. The radially outer second end portion defines an edge portion extending parallel to the axis of rotation of the tire. The edge portion improves traction of the tire and evacuation of the discharge groove. | 08-06-2009 |
20090255616 | PNEUMATIC TIRE AND METHOD OF PRODUCING THE SAME AS WELL AS TIRE CURING MOLD - Provided are a pneumatic tire, a method of producing the pneumatic tire, and a tire curing mold, with which decrease in wet performance of a pneumatic tire in a worn state can be effectively prevented while chipping of land portions such as blocks is prevented in releasing the tire from a mold. The pneumatic tire of the present invention includes: a tread portion provided with groove portions and land portions; and sipes provided in the land portions. Each of the sipes has at least one end, in a longitudinal direction, being terminated within the corresponding land portion. Each sipe is provided with: a first offset portion protruding toward one side in a sipe thickness direction; and a second offset portion protruding toward the other side in the sipe thickness direction at a position on an inner side, in a tire radial direction, of a position at which the first offset portion protrudes. For each sipe, a sipe length (L | 10-15-2009 |
20100078106 | Pneumatic Vehicle Tire - A pneumatic vehicle tire has peripheral grooves with outer edges on a tread periphery, running peripherally parallel and substantially linearly. A groove base path on a groove base is wavy or zigzags and narrower than a peripheral groove. Projections of groove sides assigned to inward pointing corners of the groove base path are parts or sections of bodies with a base surface having at least four free sides. The base surface runs near the periphery at an angle of at least 60° and is inclined to the radial. The base surface has boundary surfaces running from the free sides toward the groove base at a smaller angle and being inclined to the radial. Two side surfaces run between adjacent projections in peripheral direction, toward the groove base path and have an angle of inclination to the radial larger than the boundary surface angle and smaller than the base surface angle. | 04-01-2010 |
20100154953 | PNEUMATIC TIRE - 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 ( | 06-24-2010 |
20100258228 | MECHANISMS FOR EJECTING OBJECTS FROM A TIRE TREAD - Apparatus for ejecting objects from a tire tread include, in particular embodiments, a pair of adjacent ground-engaging elements, each element including a ground-engaging contact surface; a groove separating the pair of ground-engaging elements, the groove having a base and a pair of opposing sidewalls spaced apart by a groove width; a sipe having a particular size, and located in communication with a portion of the groove extending between the pair of ground-engaging elements; and, an ejector associated with the sipe, the ejector comprising a projection that extends within the groove. | 10-14-2010 |
20100307651 | TYRE FOR VEHICLE WHEELS - A tyre for vehicle wheels, in particular for heavy load vehicle wheels, has a tread band including an annular central portion astride an equatorial plane and two annular shoulder portions arranged on axially opposite sides with respect to the annular central portion. The annular central portion is separated from a respective annular shoulder portion by a respective circumferential groove. The annular central portion includes a plurality of blocks arranged along at least one circumferential row between two circumferential grooves and at least one transversal sipe arranged between two circumferentially consecutive blocks. The transversal sipe has a main surface oriented in a substantially radial direction and provided with at least one deformation defining, in the adjacent blocks, respective portions of mutual constraint. The deformation has an overall decreasing width from an axial end of the sipe to a central zone thereof and has a radial extension smaller than that of the aforementioned main surface. | 12-09-2010 |
20110000595 | TREAD BAND WITH GROOVES PROVIDED WITH A NOISE-REDUCING DEVICE | 01-06-2011 |
20110005654 | Pneumatic Tire - The present invention provides a pneumatic tire that can exhibit high ice performance throughout a period of use of the tire, and can reduce a rejection rate without complicating production of the tire. The pneumatic tire includes: a plurality of land portions | 01-13-2011 |
20110048603 | PNEUMATIC VEHICLE TIRE FOR COMMERCIAL UTILITY VEHICLE - A pneumatic vehicle tire for commercial utility vehicles has a tread with at least two circumferential grooves which run in the circumferential direction and divide the tread into circumferential ribs. A gross tread volume is defined by an envelope running in the tread parallel to the periphery of the tread and touching the lowest circumferential groove(s) from the inside radially, together with the periphery of the tread and flank portions at the shoulders. A groove volume is defined by all the grooves in the tread. The groove volume in the tread is between 1% and 10% of the gross tread volume. | 03-03-2011 |
20110120610 | Snow Tire Tread - Tire tread ( | 05-26-2011 |
20110126952 | TIRE AND METHOD OF PRODUCING THE SAME - An object of the invention is to provide a tire and a method of producing the tire, in which tire breakage of a groove fence in vulcanization molding and generation of cracks at a groove bottom can be suppressed, noise is relatively low and uneven wear is less likely to occur. At least one of a groove wall | 06-02-2011 |
20110226398 | Pneumatic Tire - A pneumatic tire is provided with a main groove extending along a tire circumferential direction in a tread. A side wall of a land portion facing the main groove extends so as to be inclined with respect to a tire circumferential direction between a pair of corner portions. The corner portion positioned in an inner side in a width direction of the main groove is set to an inner corner portion and the corner portion positioned in an outer side is set to an outer corner portion. In the inner corner portion, the side wall is formed by a stepped surface expanding to the outer side in the width direction toward a groove bottom and an expansion to the outer side in the width direction in the stepped surface is made smaller from the inner corner portion toward the outer corner portion. | 09-22-2011 |
20110240192 | TIRE TREAD CONSTRUCTION FOR IMPROVED TRACTION - A structure for a tread pattern of a pneumatic tire includes a radially extending pedestal, a first set of cylindrical voids extending radially through the pedestal, a second set of cylindrical voids extending radially through the pedestal, and a radially extending void ring circumscribing the pedestal. | 10-06-2011 |
20110290393 | Tire Tread Comprising Incisions Provided with Projections - Tread band for a tire comprising a plurality of elements in relief, each element in relief having a contact face and lateral faces, at least some of these elements in relief having at least one incision opening onto two of the said lateral faces, this incision being delimited by a first face and a second face, these first and second faces each comprising projections, each projection of the first face being arranged on the said face so that it can collaborate through contact with a first projection and a second projection on the second face opposite, the said first and second projections of the second face being situated one on each side of the projection of the first face in opposite directions D | 12-01-2011 |
20110315290 | PNEUMATIC TIRE - A pneumatic tire wherein a sipe includes protrusions on a first sipe wall face of mutually opposing sipe wall faces and recesses that mate with the protrusions in a second sipe wall face. Additionally, in a projection figure of the protrusions with the sipe wall faces in an expanded state, a relationship between a placement density X of the protrusions in a region that extends up to half of a sipe depth H from an opening of the sipe and a placement density Y of the protrusions in a region that extends up to half of the sipe depth H from a bottom of the sipe is X>Y. | 12-29-2011 |
20120006457 | PNEUMATIC TIRE - In a tread part, a land part (block) partitioned by a main transverse groove is provided with a thin groove having a narrower groove width than the main transverse groove and extending in a tire width direction. On a groove lateral face which is one of opposing groove lateral faces of the thin groove, ridges projecting toward the other groove lateral face and extending in a depth direction of the thin groove are provided. A plural number of the ridges are provided in parallel to each other at intervals in a length direction of the thin groove, and an extending length in the depth direction is set up to include at least two kinds. | 01-12-2012 |
20120018069 | PNEUMATIC TIRE - A plurality of blocks is provided in a tread portion and a plurality of sipes is provided in a tread surface of the blocks. In the sipes, protrusions are formed on a first sipe wall surface of mutually opposing sipe wall surfaces and recesses that engage with the protrusions are formed on a second sipe wall surface. Collapsing of the portions of the blocks sandwiched by the sipes is suppressed due to the engaging of the protrusions and the recesses. A height of the protrusions provided on the sipe wall surfaces of the sipes located at the edges in the tire circumferential direction is greater than a height of the protrusions provided on the sipe wall surfaces of the other sipes. Specifically, a force that works to suppress bending deformation increases and collapsing of the portions of the blocks located at the edges in the tire circumferential direction is suppressed. | 01-26-2012 |
20120103491 | GRIPPING EDGES FOR WINTER TIRE - A vehicle wheel tire includes a tire tread having a circumferential center tread region in which block elements are arranged in a symmetric pattern on opposite sides of a tire circumferential equatorial centerplane. The tread has one or more circumferential grooves bounded by edges of opposing block elements, pairs of opposed block elements having a block edge facing the groove and an array of saw-teeth formed along the groove-facing edge of opposed block elements inclined in the radial direction. The saw-teeth on a block edge of one opposed block element incline in a direction opposite to the inclination direction of saw-teeth on opposite opposed block element. A block element on the center tread region side of the groove has multiple circumferentially spaced apart and laterally extending sipes extending across the block element. The sipes extend to and align with the array of saw-teeth along the groove-facing edge of the block element. | 05-03-2012 |
20120103492 | WINTER TIRE TREAD SIPING PATTERN - A vehicle wheel tire includes a tire tread having a circumferential center tread region in which block elements are arranged in a symmetric pattern on opposite sides of a tire circumferential equatorial centerplane. Symmetrically disposed block elements on opposite sides of the centerplane have a plurality of spaced apart and laterally extending wavy sipes extending across the block element. Selective pairs of adjacent sipes are interconnected by one or more circumferentially oriented notches. The wavy sipes have regions of varying depth and include one or more recessed region(s) and one or more non-recessed region(s). A circumferentially disposed notch interconnecting a pair of adjacent wavy sipes at opposite notch ends intersects the wavy sipes at non-recessed sipe regions. | 05-03-2012 |
20120168049 | TIRE WITH A SIPE HAVING AREAS WITH REDUCED THICKNESS AND APPARATUS FOR MAKING THE SAME - A tire has a sipe with areas of reduced thickness. The sidewalls of the sipe may have undulations that extend both in the radial and transverse directions of the tire and the areas of reduced thickness are found in between a peak to peak or a valley to valley coincidence of the undulations. Twice the value of the amplitude of the undulations in the radial direction of the tire is greater than 95% of the value of the half pitch of those undulations. The ratio of the area of the regions of the sipe having reduced thickness to the area of the thicker regions of the sipe may meet a minimum threshold. The apparatus may also include a sipe blade that extends from a curing member that for tire molding or retreading. | 07-05-2012 |
20120180920 | PNEUMATIC TIRE - A pneumatic tire includes sipes extending in a tire width direction on a road contact surface of blocks, the sipes having at least one end open to a circumferential main groove. The sipes are positioned at an edge portion of the blocks, and have a first sipe portion open to the circumferential main groove and a second sipe portion positioned at a center portion of the blocks. The first sipe portion has a linear form when viewed as a cross-section from a direction perpendicular to a sipe length direction, and has a pair of mutually mating, opposing first sipe wall faces with a protrusion and a recess respectively disposed thereon. The second sipe portion has a form bent in the sipe width direction when viewed as a cross-section from a direction perpendicular to the sipe length direction, and has a pair of mating mutually opposing second sipe wall faces. | 07-19-2012 |
20120273107 | TIRE HAVING ENHANCED ROLLING PERFORMANCE - Tire provided with a tread surface and lateral faces intersecting at two corner edges to determine a total width of tread between the said two corner edges, provided with grooves of depth H opening onto the tread surface and delimited by faces of material which are distant by at least a width equal to 2 mm, a plurality of grooves on at least one of the opposing faces that delimit them with at least one profiled protrusion delimited by a radially external surface and by a radially internal surface, the radially external surface being closer to the tread surface than the radially internal surface, meeting at those points of the protrusion that are furthest away in the direction of the groove, each of these radially internal and external surfaces of each protrusion has, in a plane of section parallel to the faces delimiting the groove, a profile of length greater than the length of the profile of the radially internal surface. | 11-01-2012 |
20130133799 | Pneumatic Tire - In a pneumatic tire, a single block includes a first sipe and a second sipe each extending in a tire width direction and disposed at a predetermined pitch in a tire circumferential direction. The first sipe and the second sipe include a first sipe portion that has a linear form when the block is viewed planarly, and a second sipe portion that has a zigzag shape when the block is viewed planarly and that connects to the first sipe portion. The first sipe portion includes a pair of sipe wall faces that face each other and have a linear form when viewed as a cross-section from a direction perpendicular to a sipe length direction, and includes a protrusion disposed on a first face of the sipe wall faces and a recess disposed on a second face of the sipe wall faces so as to mate with the protrusion. | 05-30-2013 |
20130146191 | DEVICE FOR PROTECTING A GROOVE IN A TREAD - A tire for a heavy goods vehicle, having a tread having a tread surface provided in the new state with at least one groove delimited by opposing side walls, this groove opening onto the tread surface in a discontinuous manner by way of a plurality of portions that are open towards the exterior of the tread, these open portions having two ends that are extended under the tread surface by channels having inlets connected to the ends of the open portions, these inlets to the channels having a mean surface area S. This tread is such that each open portion on the tread surface is provided at each of its ends with a closure device for partially closing the cross section of the inlets to the channels when the tire is running and for leaving a passage unclosed. | 06-13-2013 |
20130153105 | TREAD WITH REDUCED ROAD NOISE - Tire for heavy goods vehicle having a tread comprising a plurality of circumferential grooves delimiting intermediate ribs and two edge ribs each circumferential groove comprising a plurality of protuberances formed as a protrusion on at least one lateral wall delimiting this groove, wherein:
| 06-20-2013 |
20130192733 | TIRE HAVING LOW ROLLING FRICTION - Tire tread provided with circumferential grooves delimiting two edge rows provided with a plurality of transverse grooves, those of one edge row forming at least one bearing block protruding on at least one delimiting wall, each comprising a surface capable of coming into contact with another surface during contact with the ground and at least one passageway for a fluid between each bearing block of a groove and the bottom of the groove. For each edge row, the mean surface indentation ratio Tc is at least 0.7 and at most 1.6 times E/R, where E is the mean thickness for all grooves comprising active surfaces measured between a radially outermost point of the active surface and a radially outermost point of the reinforcing belt, R is the mean distance for all transverse grooves comprising active surfaces measured between the point of the active surface that is radially outermost and the rotation axis of the tire provided with the tread. | 08-01-2013 |
20130306209 | Tire Tread - A tire tread produced from a rubber composition having a shore A hardness between 58 and 65, inclusive, and provided with a rolling surface, configured to be in contact with the ground, and with a tread pattern formed from motifs in relief, the tread having a plurality of incisions of width WI between 0.3 mm and 2 mm, inclusive, and a depth DI, each incision being delimited by at least two separate rubber walls, at least one of said incisions being delimited by at least one wall provided with at least one protuberance with a maximum thickness TMAX projecting from said wall in order to reduce the width of the incision, the protuberance extending, in the direction of the depth DI of the incision, between an internal depth DPI and an external depth DPE, the internal depth DPI and the external depth DPE being non-zero and the maximum thickness TMAX being greater than or equal to 40% of the width WI of the incision. | 11-21-2013 |
20140060717 | TIRE WITH TREAD HAVING BRIDGED AREAS WITH SPLIT CONTACT FACES WITHIN A LATERAL GROOVE - This invention relates generally to tires having treads that have a configuration and/or properties for maintaining hydroplaning resistance and improving rolling resistance, and, more specifically, to a tire that has a tread with bridged areas found in its lateral grooves that are configured to maintain hydroplaning resistance and snow traction while also improving rolling resistance. | 03-06-2014 |
20140110026 | PNEUMATIC RADIAL TIRE - A pneumatic radial tire according to the present invention has a tread pattern specifying a tire rotation direction and an optimized shape of a groove wall on a kicking-out side of a lateral groove. | 04-24-2014 |
20140116589 | Pneumatic Tire - This pneumatic tire has a plurality of lateral grooves, wherein each of the lateral grooves has a first side wall, a second side wall, a bottom surface and a groove width. A plurality of protrusions extending from the first side wall towards the second side wall; and a plurality of protrusions extending from the second side wall towards the first side wall. The protrusions are configured to prevent the lateral grooves from fully closing in the contact patch during rotation of the tire through the contact patch. | 05-01-2014 |
20140130951 | TIRE - A land block ( | 05-15-2014 |
20140166172 | TIRE INCLUDING A TREAD PROVIDED WITH INCISIONS INCLUDING WIDE PORTIONS AND NARROW PROTIONS - Tyre comprising a tread, this tread including a rolling surface ( | 06-19-2014 |
20140174618 | PNEUMATIC TIRE - A pneumatic tire is provided that has enhanced traction performance. A shoulder main body portion of a first shoulder block is formed with a step portion projecting out in a tire circumferential direction. A height of the step portion is set lower than a height of a tread face of the shoulder main body portion and higher than the height of a lug groove. The step portion extends from a tire equatorial plane side end portion of the shoulder main body portion, beyond a tire width direction ground contact edge, to a tire shoulder portion. | 06-26-2014 |
20140299243 | RESONANT-NOISE SUPPRESSOR DEVICE FOR TIRE - A tread for a tire, this 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 flexible device for at least partially closing this groove as it passes through the contact patch, each flexible device comprising at least one blade of a suitable thickness that allows it to flex under the effect of a circulation of liquid, this blade being borne by a wall delimiting the groove, each blade of thickness E being bounded by a bottom wall facing the bottom of the groove, an end wall facing the other wall of the groove and a contact wall intended to come into contact with the road surface and lateral walls spaced apart by a distance equal to the thickness E of the blade, this tread being such that the bottom wall of the blade comprises a first part referred to as connection part and a second part extending the first part up to the end part of the blade, the connection part being offset towards the outside of the tread with respect to the second part of the bottom wall of the blade so as to form a notch. | 10-09-2014 |
20140360641 | TIRE TREAD WITH ANGLED RIB GROOVE WALLS - A pneumatic tire includes first and second laterally spaced sides, and a tread interposed between the sides. The tread includes a tread surface having at least one groove. The groove includes first and second facing sidewalls separated by a groove bottom surface. A series of serrations or ribs extend over at least a portion of a height of the facing sidewalls. The serrations extend at a non-perpendicular angle relative to the tread surface and the serrations/ribs on the first and second sidewalls of the groove are opposed to each other. | 12-11-2014 |
20150136289 | ANTI-NOISE DEVICE FOR TIRE - Tread comprising at least one groove delimited by two walls facing one another, joined together by a groove bottom, this groove having a plurality of closure devices, each made up of at least one flexible blade (of thickness E suited to allowing flexing under the effect of a circulation of liquid in the groove, and secured to a wall delimiting the groove, each flexible blade bounded by a bottom wall facing the bottom of the groove, an end wall facing the other wall of the groove and a contact wall to come into contact with the roadway and lateral walls spaced apart from one another by a distance equal to the thickness E of the blade, the bottom wall of each flexible blade having a notch in the vicinity of the wall to which the blade is attached, wherein each flexible blade is connected to one of the walls delimiting the groove inside a housing (formed on the wall bearing the blade, each housing having a depth suited to containing in its entirety a notch. | 05-21-2015 |
20150298508 | Pneumatic Tire - A tread pattern of a pneumatic tire includes two outer circumferential main grooves and two inner circumferential main grooves. Each of the two inner circumferential main grooves comprises a first groove wall and a second groove wall facing the first groove wall. The first groove walls include first oblique wall elements that extend obliquely outward in a tire width direction and second oblique wall elements that extend obliquely inward in the tire width direction and extend for a shorter length than the first oblique wall elements. The second groove walls include third oblique wall elements that extend obliquely inward in the tire width direction and fourth oblique wall elements that extend obliquely outward in the tire width direction and extend for a shorter length than the third oblique wall elements. | 10-22-2015 |
20160023519 | PNEUMATIC TIRE - A pneumatic tire can improve the heat dissipation effect in the tread portion while guaranteeing land portion rigidity and can also suppress degradation of the heat dissipation effect. The pneumatic tire includes a narrow groove ( | 01-28-2016 |
20160159160 | PNEUMATIC TIRE - A pneumatic tire includes: a tread portion; grooves formed on the tread portion; and land portions defined by the grooves, wherein each of the land portions includes: a pair of side walls which opposedly face each other with the groove sandwiched therebetween; a first projecting ridge formed on one of the pair of side walls; and a second projecting ridge formed on the other side wall, the first projecting ridge and the second projecting ridge extend along the groove, at least one of the first projecting ridge and the second projecting ridge is inclined such that a position of the projecting ridge in a groove depth direction changes along the groove, and the first projecting ridge intersects with the second projecting ridge as viewed in a width direction of the groove. | 06-09-2016 |
20160193887 | TIRE | 07-07-2016 |
20160250898 | Snow Tire With Directional Paddles | 09-01-2016 |