Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/0306—Patterns comprising block rows or discontinuous ribs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/032—Patterns comprising isolated recesses
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/032—Patterns comprising isolated recesses
  • B60C11/0323—Patterns comprising isolated recesses tread comprising channels under the tread surface, e.g. for draining water
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
  • B60C11/1272—Width of the sipe
  • B60C11/1281—Width of the sipe different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
  • B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
  • B60C11/1392—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block edges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
  • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
  • B60C2011/1209—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe straight at the tread surface
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
  • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
  • B60C2011/1231—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe being shallow, i.e. sipe depth of less than 3 mm
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/03—Tread patterns
  • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
  • B60C11/1259—Depth of the sipe
  • B60C2011/1268—Depth of the sipe being different from sipe to sipe

Definitions

• the present invention relates to tires for heavy goods vehicles and more particularly the treads of such tires.
• a tire for a heavy vehicle comprises a tread whose radially outward surface forms a running surface intended to come into contact with a roadway during driving.
• This tread is provided, in known manner, grooves forming in contact with the pavement volumes capable of draining the water present on a roadway in rainy weather. These grooves have a depth corresponding substantially to the thickness of the band to be used and delimit relief elements which are in the form of blocks or ribs.
• Each raised element comprises a contact face forming a portion of the tread surface of the tread and side walls intersecting this contact face along ridges.
• each incision has a depth at least equal to 50% of the depth of the grooves and has a width, corresponding to the distance between the facing faces delimiting it, which is less than the width of the grooves to precisely allow their put in contact.
• a groove has a width of at least 2 mm and an incision a width of less than 2 mm.
• Each incision cuts a contact face of the relief element along two edges.
• Equatorial median plane it is a plane perpendicular to the axis of rotation and passing through the points of the tire radially furthest from said axis.
• a block is a raised element formed on the tread which is delimited by recesses or grooves and comprising side walls and a contact face intended to come into contact with the roadway.
• a cutout may be either an incision or a groove or a combination of incision and groove.
• An incision corresponds to a space between two material walls distant from each other so as to be in at least partial contact in the conditions of use of a tire.
• a groove corresponds to a space between two walls of material not coming into contact with one another
• radial direction means in this document a direction which is perpendicular to the axis of rotation of the tire (this direction corresponds to the direction of the thickness of the tread).
• axial direction means a direction parallel to the axis of rotation of the tire.
• circumferential direction means a direction which is perpendicular both to the axial direction and to a radial direction and which is tangent to any circle centered on the axis of rotation.
• the present invention aims to prevent the formation of tearing material in the vicinity of the incisions formed on a tire tread for a heavy vehicle and thus to avoid the generation of uneven wear of the tire. tread.
• total thickness of a tread must be understood here the total thickness of the band that can be worn before having to renew this band either by retreading or by tire change.
• the object of the invention is to provide a tread with depth grooves at most equal to the thickness E of the band, these grooves delimiting relief elements such as ribs or blocks. .
• Each relief element has a contact face forming a part of the running surface of the strip and side faces intersecting the contact face to form edges of the relief elements.
• At least one of these relief elements comprises at least one cutout opening on the contact face of a relief element to form ridges, this cutout extending into the relief element to a depth total H at most equal to the thickness E of the strip, this cutout occurring between the contact face and a depth H1 at most equal to the total depth H, in the form of an incision having a width D suitable for to be able to close at least in part for usual conditions of rolling the tire.
• This tire is characterized in that in the vicinity of at least one edge of this cutout on the running surface, that is to say at a distance at most equal to five times the width D of the incision, it is formed at least one cavity having a depth h small compared to the total depth H of the cut, that is to say having a depth h at most equal to 30% of the total depth H, this at least one cavity decreasing the compressive rigidity of the tread in the vicinity of said at least one edge.
• the cavities thus formed in the vicinity of each edge of a cutout by modifying locally (that is to say closer to the edges of the incision), reduce the sensitivity of this cutout against tearing material related to possible aggression while driving.
• the cavities are formed on the rolling surface or the contact surface of the element on a region extending over all or almost the entire length of the cutout and each side of said cutout. At least one cavity is found over a zone of width L1 measured with respect to each edge. This width is chosen relatively small (at most equal to 5 times the width D of the incision) in order to obtain the desired effect. Beyond this width the softening effect of the edge is not sufficient to have an effect on the resistance to aggression while driving.
• a plurality of cavities in the vicinity of at least one edge of a cutout to distribute the relaxation of the tread near this edge.
• the total width of the region on which the cavities are formed is at most equal to thirty times the width D of the cutout on the running surface.
• This invention is applicable to cutouts oriented transversely or circumferentially or in a direction oblique to the transverse direction.
• This invention also applies to a tire having a tread of total thickness E devoid of grooves, this tread comprising at least one cutout oriented circumferentially or substantially in the circumferential direction and s Opening on the running surface to form ridges, this cutout extending in the tread to a total depth H at most equal to the thickness E of the strip, this cutout occurring between the surface of and a depth H1 at most equal to the total depth H, in the form of an incision having a width D suitable to be closed at least in part for the usual conditions of rolling the tire.
• the tread In order to protect the edges by reducing the compressive rigidity of the tread locally, it is formed, in the vicinity of at least some edges, that is to say at a distance at most equal to five times the width D of the incision, and on the running surface, at least one cavity having a small depth compared to the total depth H of the cutout, that is to say having a depth at most equal to 30% of the total depth H.
• the depth of the cavities is at most equal to 15% of the depth H of the cutouts.
• these cavities have the shape of small grooves of depth preferably at most equal to 2 mm or even more preferably at most equal to 1 mm.
• the small grooves are oriented parallel to each other on the same side of an edge.
• these small grooves can be oriented parallel to the edges of the cutout.
• these cavities have the shape of cylindrical holes of shallow depth in front of the total depth of the cuts, to form on the contact face a closed tracing edge which may be of circular or substantially circular shape or rectangular or triangular.
• the cavities may have a frustoconical shape (in this case there is a draft angle at most equal to 10 degrees) and shallow depth in front of the total depth of the cuts, that is to say at most 30%> of said depth.
• the depth of the cavities is preferably at most equal to 2 mm and even more preferably at most equal to 1 mm.
• the cavities have the shape of a plurality of grooves oriented parallel to each other.
• groove here means a cavity of generally elongated shape, that is to say having a very large size compared to other dimensions of the same groove (by a factor of at least 10).
• each cavity having the shape of a groove is oriented parallel to the edges of the cutout that is to be protected.
• the cavities have the shape of a plurality of grooves oriented parallel to each other and so as to make an angle different from zero degrees with the direction of the edges of the incision. This angle is preferably at least equal to 45 degrees.
• the cutout is in the form of an incision extending inside the strip by a channel of maximum width K intended after partial wear of the strip. bearing to form a new groove on the surface.
• the area on which the cavities are formed on each side of the cutout is at least 50% wide of the maximum width K. This width of the zone on which the cavities are formed is measured perpendicular to the edge that is to be protected.
• one or the other of the variants presented in the present document can be further improved by combining the presence of at least one cavity in the vicinity of at least one edge.
• a cutout with the presence of a chamfer on at least one edge of a cutout.
• chamfer is meant a part of small height relative to the depth of the cutout (that is to say on a depth at most equal to 10% of the depth of the cutout) and making an average angle of less than 90 degrees with the running surface. Preferably, this average angle is close to or equal to 45 degrees.
• the geometry of each chamfer can be flat or curved. The presence of a chamfer generates between the edge of the cutout and one of the walls of said cutout inclined portion.
• At least one cavity in the form of at least one groove oriented parallel to the edge of the cutout.
• at least one edge of a cutout is provided with a chamfer, this chamfer extending on the running surface by the presence of at least one cavity having a depth at most equal to 30% of the total depth. H of the cutout and intended to reduce the compression stiffness of the band in the vicinity of said chamfer. Cavities similar to those formed on the running surface may further be formed on each chamfer.
• the cavities may be of variable dimensions starting from an edge of the cutout and going towards the edge of the relief element located on the same side as said edge.
• the density of cavities can be increased by approximating each edge; cavity density means a volume of cavities per unit area.
• the cavities are arranged with distances between cavities which are a function of the distance of these cavities with respect to the edges of the cutout.
• the tread of a tire according to the invention comprises a plurality of relief elements, at least one of these elements of the invention.
• relief being provided with at least one cutout forming on the contact face of the relief element two edges. These edges are provided in their vicinity, that is to say at a distance at most equal to five times the width D of the cutout, with at least one main cavity to achieve a relaxation of the relief element in the vicinity of each edge of the cutout.
• this relief element comprises a plurality of additional cavities formed on either side of each main cavity, the density of these additional cavities being greater in the middle part of the cutout, which corresponds substantially to the central portion. of the relief element.
• the additional cavities are formed so that they are sufficiently far from the edges of the relief element not to modify the compression stiffness of said edges and to modify these same rigidities in the central portion.
• Figure 1 shows a tread of a tire for heavyweight according to the invention, this band comprising a plurality of circumferentially oriented ribs;
• Figure 2 shows a sectional view along the line II-II, a rib of the tread shown in Figure 1;
• Figure 3 shows a sectional view of a tire variant according to the invention, the cutouts having an inner portion forming a channel;
• Figures 4A and 4B show two variants of the invention implementing small incisions in the vicinity of the edges of a cutout;
• Figure 5 shows another variant of the invention implementing a plurality of holes in the vicinity of a cutout;
• Figure 6 shows a variant of the invention according to which the depth of the cavities varies with the distance to the cutout;
• Figure 7 shows a variant according to which the edges of the cutout are extended towards the cutout by a chamfering portion, this chamfer being also provided with cavities;
• FIG. 8 shows a block of a tread according to the invention, this block comprising an incision of transverse general orientation
• FIG. 9 shows a block of a tread according to the invention, this block comprising an incision of transverse general orientation, this incision comprising several parts of different orientations;
• Figure 10 shows two rows of blocks extending in the circumferential direction of a tread variant according to the invention.
• Figure 1 shows a partial view of the tread of a tread 1 according to the invention for tire size 265 / 55R17.5 equipping a heavy vehicle.
• This tread comprises three circumferential grooves 2 delimiting two intermediate ribs 3 (width 64 mm) and edge ribs 4 (width 40 mm) axially delimiting the tread.
• the tread 1 has a total thickness E equal to 17.5 mm and the circumferential grooves 2 have a depth P which is at most equal to this total thickness E (in this case this depth P of the grooves is equal to 14.5 mm).
• the tread 1 comprises a running surface 10 intended to come into contact with the surface of a roadway during the running.
• Each rib intermediate 3 comprises a radially outward face which forms a contact face 31 and forms a part of the running surface.
• Each intermediate rib 3 comprises side faces 30 intersecting the contact face 31 along circumferentially oriented edges 32.
• the axial (or transverse) width of each rib corresponds to the distance separating these ridges.
• the two intermediate ribs 3 are each provided with a cutout 5 oriented circumferentially.
• the circumferential direction is indicated by an arrow C.
• each intermediate rib 3 in the vicinity of the edges 50 formed by the cutouts 5, it is formed on the contact face 31 and in the vicinity of each of said edges a plurality of cavities having in this case the shape of shallow grooves 6 of mean low depth equal to 0.6 mm and a width substantially equal to 0.6 mm.
• a band of width L0 here equal to five times the width 0.6 mm, ie 3 mm
• two surface grooves 6 are formed which are in this case parallel to one another and to the ridges 50 of the incision (they are therefore oriented in the circumferential direction).
• Figure 3 shows a sectional view of a tire variant according to the invention, a cutout having an inner portion forming a channel 52 intended after partial wear to form a new groove on the running surface.
• the cutout 5 is formed of an incision 51 of width 0.6 mm opening on the running surface in the new state, this incision 51 extending by a widening forming a channel 52 of maximum axial width K ( in this case equal to 7.2 mm).
• This channel is trapezoidal and has a height equal to 7.2 mm.
• incisions a plurality of cavities having in this case the form of grooves of average depth equal to 0.6 mm and width substantially 0.6 mm. These small grooves are parallel to the edges 50 of the incision. At least one of these grooves is formed in a band of width L0; further grooves are further formed between L0 and a width L1 at least equal to a quarter of the maximum width K of the channel 52 (in this case the width L1 is equal to the maximum width K).
• Figures 4A and 4B show two variants of the invention implementing small incisions 6 in the vicinity of the edges of a cutout 5.
• small incisions 6 here means that these incisions have a small length and make an angle other than zero degrees with the direction of the edges of the cutout.
• Figure 4A shows a plurality of small incisions 6 perpendicular to the direction of the edges of the cutout.
• Figure 4B shows a variant according to which the small incisions all have the same inclination whether on one side or the other of the cutout 5. These same incisions could of course have different inclinations on one side compared to the other.
• Figures 5 and 6 show variants of the invention implementing a plurality of holes in the vicinity of a cutout.
• hole means a cavity whose opening on the rolling surface has a closed contour.
• FIG. 5 shows a variant of the invention implementing a plurality of holes 6 'in the vicinity of a cutout 5 formed in a block 3 of material.
• Each hole 6 ' has a circular cylindrical shape of depth equal to 1 mm and a diameter equal to 0.6 mm. The distance between two holes is equal to 0.6 mm.
• These holes 6 ' are arranged on parallel lines between them and staggered in order to achieve a fairly homogeneous softening in the vicinity of the edges formed by the cutout 5 on the contact face. Of course, these same holes may be arranged in different arrangements for example without being staggered.
• at least one row of holes is arranged on a strip of width L0 here equal to 1 mm, this strip being limited on one side by an edge 50 of the cutout 5.
• Figure 6 shows a section of a relief element 3 of a strip, this relief element comprising a cutout 5 forming edges 50 on the contact face.
• this cutout 5 On either side of this cutout 5 are provided holes 6 'whose depths hl, h2, h3 vary as a function of the distance relative to said cutout. In this case, the depths of the holes are increasing as the holes are closer to the cutout. The largest depth h3 for these holes 6 'is equal to 1.5 mm while the lowest hl is equal to 0.5 mm. The average distance between holes of different depths is 0.5 mm. There is thus made a greater relaxation in the near vicinity of the edges of this cut and a progressivity of the surface stiffness away from said edges. This same progressiveness can be applied to the case of cavities made in the form of grooves.
• Figure 7 shows a variant in which the edges of the cutout 5 are extended towards the cut by chamfers 53, 54, these chamfers being also provided with cavities 61 of shallow depth.
• Each chamfer forms a flat part angled at an angle equal to 45 degrees with a perpendicular to the running surface (and in this case to the direction of the cutout).
• Each chamfer extends over a distance equal to 2 mm measured perpendicularly to the running surface.
• FIG. 8 shows a block 3 'of a tread according to the invention, this block comprising an incision 5 completely traversing said block to form two edges 50 on the contact face 31' of the block, this face it is itself limited by edges 30 "to locally protect the block in the vicinity of the edges 50 formed by the incision 5, it is formed by molding on the contact face 31 'and in the vicinity of these two edges 50 a plurality of small cavities 6 (in the form of grooves of small width, that is to say of width less than 1 mm), the density of these cavities 6 being greater in the central portion 31 "of the block (this is that is, substantially in the vicinity of the middle of the edges of the incision 5).
• Figure 9 shows a block 3 delimited by circumferential grooves 2 and transverse 2 '.
• the circumferential direction is indicated by the arrow C while the transverse direction is indicated by the arrow T in this figure.
• This block 3 includes a contact face 31 'delimited by front and rear edges 35', 36 'and lateral edges 32'.
• This block 3 is provided with a cutout 5 of transverse general orientation.
• this cutout forms on the contact face 31 'of the block three parts: two end portions 55 substantially parallel to the front edges 35' and rear 36 'of the block and an intermediate portion 56 interconnecting the parts d end 55.
• These two end portions 55 each open on a side edge of this block.
• the intermediate portion has a substantially parallel orientation to the side edges of the block (and therefore substantially perpendicular to the front and rear edges of the block).
• the end portions 55 are protected by the establishment of small grooves 63 adjacent the edges of said end portions. These small grooves 63 are in this case parallel to said end portions 55.
• Figure 10 shows another variant of tread according to the invention.
• This figure shows a set of two rows of relief elements extending in the circumferential direction (this direction is indicated by the arrow C). These two rows are separated from each other by a circumferential groove 2.
• Each row comprises a plurality of relief elements 3 separated from each other in the circumferential direction by a cutout 2 'having in this case a width less than the width of the circumferential groove 2.
• These cutouts 2' are similar here incisions that is to say that the walls of the relief elements on either side of each incision come into contact during taxiing.
• each relief element 3 is provided with a circumferentially oriented incision 5, this incision 5 s 'opening at both ends in the cutouts 2'.
• this incision 5 s 'opening at both ends in the cutouts 2'.
• a main cavity 60 which in this case extends over the entire circumferential length of the relief element.
• a plurality of additional cavities 61 are located located entirely in the central portion C1 of the relief element to complete the relaxation performed by the cavities 60 closest to the edges of the incision 5.
• Another variant may advantageously complete the variant shown with FIG. 10. According to this other variant, it is possible to form, along the edges formed by the cutouts 2 'delimiting the relief elements 3, the same cavities than those formed along the edges of the incision 6.
• the cavities are related to incisions of width equal to 0.6 mm and are made by molding during the molding phase of the tread.
• a tread comprises cavities opening on the tread surface, these cavities having on said surface a closed contour (i.e. forming a single continuous tracing edge), it is It is an object of the invention to provide a region surrounding this ridge with a plurality of shallow cavities to generate surface softening in the vicinity of this ridge and thereby protect it against tearing of material.
• the person skilled in the art is able to combine the various variants described here according to the objective to be achieved.

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• Engineering & Computer Science (AREA)
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• 2010
  • 2010-07-06 FR FR1055455A patent/FR2962372B1/fr not_active Expired - Fee Related
• 2011
  • 2011-07-06 EP EP11735407.6A patent/EP2590828B1/fr active Active
  • 2011-07-06 WO PCT/EP2011/061369 patent/WO2012004285A1/fr not_active Ceased
  • 2011-07-06 US US13/808,854 patent/US10000093B2/en active Active
  • 2011-07-06 EA EA201390063A patent/EA201390063A1/ru unknown
  • 2011-07-06 CN CN201180033455.8A patent/CN102985267B/zh active Active
  • 2011-07-06 BR BR112012033246-5A patent/BR112012033246B1/pt not_active IP Right Cessation
  • 2011-07-06 JP JP2013517371A patent/JP5968882B2/ja not_active Expired - Fee Related
• 2018
  • 2018-05-18 US US15/983,816 patent/US10787040B2/en active Active

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