Having Groove Or Sipe With Specified Dimension Or Structure Therewithin Patents (Class 152/209.18)
  • Patent number: 11124025
    Abstract: A groove of tire thread having a plurality of first and second portions, each delimited by facing walls spaced apart by a maximum width measured at the tread surface and approaching one another such that, at a depth between 20 and 80% of the total depth they are spaced apart by a width less than the maximum width or facing walls spaced apart by a minimum width measured at the tread and diverge from one another such that, at a depth between 20% and 80% of the total depth of the groove, they are spaced apart from one another by a width greater than the width. A plurality of first and second portions of groove so as to form a continuous passage between all the portions of groove in order to allow liquid to flow in the groove regardless of the level of wear.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: September 21, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Brian Keefe, Walid Djabour, Arnaud Larregain
  • Patent number: 11110753
    Abstract: A pneumatic tire has an asymmetrical tread pattern and a designated vehicle mounting direction. A sipe includes a leading-side edge and a trailing-side edge, each provided with a chamfered portion shorter than a length of the sipe, and a non-chamfered region where other chamfered portions do not exist disposed in an area opposite the chamfered portion. The sipe has a maximum depth x (mm) and the chamfered portion has a maximum depth y (mm) that satisfy x×0.1?y?x×0.3+1.0. The sipe has a constant width in a range from an end portion of the chamfered portion positioned inward in a tire radial direction to a groove bottom of the sipe. A groove area of the chamfered portions and the sipes included within a ground contact region is greater on a vehicle mounting inner side than on a vehicle mounting outer side.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: September 7, 2021
    Inventors: Hiraku Kouda, Tatsuro Shinzawa, Takanori Uemura
  • Patent number: 11110754
    Abstract: A tread block arrangement suitable for a tire or for a tread band for a tire. The tread block arrangement comprises a tread block that limits a first primary sipe. The first primary sipe comprises at least a first deep part and a second deep part separated from the first deep part by a first shallow part. A depth of the first deep part is at least three times a depth of the first shallow part and a depth of the second deep part is at least three times the depth of the first shallow part. The first deep part is limited in a longitudinal direction of the first primary sipe by a primary first end wall and a secondary first end wall such that a first angle between the primary first end wall and the secondary first end wall is from 1 degree to 30 degrees.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: September 7, 2021
    Assignee: Nokian Renkaat Oyj
    Inventors: Jorma Tikka, Tomi Korkama, Outi Husso
  • Patent number: 11104182
    Abstract: An outer shoulder land region includes first shoulder lateral grooves each extending axially inwardly from an outer tread ground contact edge to have a first inner end in the tyre axial direction within the outer shoulder land region, first outer shoulder lateral sipes each connecting between the first inner end and an outer shoulder main groove, and second outer shoulder lateral sipes each extending axially inwardly from the outer tread ground contact edge to have a second inner end positioned on an axially outer side of the first inner ends. An outer middle land region includes outer middle lateral sipes each smoothly connected with the respective first outer shoulder lateral sipe with the outer shoulder main groove therebetween. Each of the outer middle lateral sipes connects between the outer shoulder main groove and an outer crown main groove and has a third inner end within the outer middle land region.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: August 31, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yoshifumi Kawagoe, Sawa Ogihara, Daisuke Aoki
  • Patent number: 11090887
    Abstract: A set of moulding elements, designed to be inserted into a mould for moulding a tyre, comprises: at least one first moulding element (1) and one second moulding element, each moulding element extending in a main moulding-element direction (EM) between two ends (3) of the moulding element with one of the ends (3) of the first moulding element connecting to one of the ends (3) of the second moulding element along an axis (MA), which is substantially perpendicular to the main moulding-element axis (EM).
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: August 17, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSMENTS MICHELIN
    Inventors: Pascal Goumault, Didier Malin
  • Patent number: 11077716
    Abstract: A tire includes a tread portion including a main groove, a first block and a second block which are adjacent to one another in a tire axial direction through the main groove. The main groove includes first groove elements and second groove elements having groove widths smaller than that of the first groove elements. The first block includes a first ground contact surface, a first sidewall facing one of the second groove elements, a first corner portion between the first ground contact surface and the first sidewall, and a first recess being cut out the first corner portion locally. The second block includes a second ground contact surface, a second sidewall facing said one of the second groove elements, a second corner portion between the second ground contact surface and the second sidewall, and a second recess being cut out the second corner portion locally.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: August 3, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yutaro Inada
  • Patent number: 11059330
    Abstract: A tire having includes a V-shaped kerf to increase the directionality of running of the tire and having a drainage section at the lower side of the kerf to enhance (e.g., improve) the water drainage performance. The tire having V-shaped kerfs includes a kerf formed on a block and allowing water introduced thereinto to be discharged to a groove, and a drainage section connected to the groove to discharge the water to the groove, the drainage section being a space defined in the longitudinal direction of the kerf.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: July 13, 2021
    Assignee: Hankook Tire Co., Ltd.
    Inventors: Jae Surb Byeon, Ha Eun Koog
  • Patent number: 11059327
    Abstract: A pneumatic tire is equipped with: a first circumferential groove and a second circumferential groove which are formed on a tread surface of a tread portion and extend along a tire circumferential direction while being arranged side by side in a tire width direction interposing an equatorial plane of the tire therebetween; a plurality of first auxiliary grooves which are arranged in the tire circumferential direction, disposed intersecting the tire circumferential direction, and communicate with the second circumferential groove by passing through the first circumferential groove, and a plurality of second auxiliary grooves which are arranged in the tire circumferential direction, disposed intersecting the tire circumferential direction so as to incline in the tire width direction, communicate with the second circumferential groove, and bend continuously with respect to the first auxiliary groove bounded at the second circumferential groove.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: July 13, 2021
    Inventors: Naoko Suzuki, Hiromitsu Takei
  • Patent number: 11052708
    Abstract: A pneumatic tire includes: a protrusion portion projecting outward in a tire lateral direction disposed in a buttress portion; and a linear portion with a linear shape when viewed in a tire meridian cross section, the linear portion constituting a surface of the protrusion portion at a position inward in a tire radial direction from a corner portion, the corner portion being an end portion of the protrusion portion outward in the tire lateral direction; the corner portion being located within a retreading development width position, which is a range in the tire radial direction in which a boundary for removing a tread when retreading is located; and the linear portion having an angle ranging from 45° to 90° with respect to a horizontal line parallel with a tire rotation axis at a position inward of the linear portion in the tire lateral direction.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 6, 2021
    Inventor: Mina Takata
  • Patent number: 11046120
    Abstract: A tire comprises a tread portion 2. The tread portion 2 comprises a plurality of lateral grooves 8 extending in a tire axial direction and blocks 9 divided by the lateral grooves 8. At least one of the blocks 9 includes a first lateral block wall 16 positioned on a side of one of the lateral grooves 8 adjacent thereto and a sipe pair 22 consisting of a first lateral sipe 23 and a second lateral sipe 24 adjacent to each other in the tire axial direction with a gap 25 therebetween. The first lateral block wall 16 has, at a center portion thereof in the tire axial direction, a convex portion 20 partly protruding toward the one of the lateral grooves 8. The gap 25 is arranged in a convex portion projection area 26 obtained by extending the convex portion 20 along a tire circumferential direction.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kazuhiro Nakano
  • Patent number: 11046118
    Abstract: A tire for two-wheel vehicle includes a tread portion having a designated rotation direction and being provided with a plurality of blocks and grooves. The plurality of blocks includes at least one V-shaped block having an axial center portion located rearwardly in the rotation direction with respect to its axial both end portions and a first sidewall located rearwardly in the rotation direction. The grooves include a groove bottom surface connected to the first sidewall, wherein the groove bottom surface is provided with ribs extending in a tire circumferential direction.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yukiko Hinami
  • Patent number: 11046117
    Abstract: A tire comprises a tread portion 2. The tread portion 2 comprises a plurality of oblique grooves 10 extending obliquely from a first tread edge Te1 positioned on one side in a tire axial direction toward a tire equator C, and a plurality of oblique land regions 13 each defined between a pair of the oblique grooves 10 adjacent to each other in a tire circumferential direction. Each of the oblique land regions 13 is provided with a plurality of joint grooves 15 each connecting between the pair of the oblique grooves 10.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kotaro Tahara, Hiroyuki Ishino, Saki Arakawa, Kenta Yagi
  • Patent number: 11040576
    Abstract: A tire includes a tread and a narrow, wavy, circumferential groove disposed on the tread, which extend around the tread in a circumferential direction. The narrow, wavy, circumferential groove has a first axial position associated with a minimum axial displacement, a second axial position associated with a maximum axial displacement, and the narrow, wavy, circumferential groove follows a serpentine path between the first and second axial positions. The narrow, wavy, circumferential groove has a first depth and a second depth, the first depth being a minimum narrow, wavy, circumferential groove depth and the second depth being a maximum narrow, wavy, circumferential groove depth. The narrow, wavy, circumferential groove follows a serpentine path between the first and second depths. The first depth of the narrow, wavy, circumferential groove and the second depth of the narrow, wavy, circumferential groove is between 0.10 mm and full tread depth.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 22, 2021
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Russ A. Moser, Richard S. Parr
  • Patent number: 11014410
    Abstract: A tire comprises a tread portion provided with two circumferential grooves disposed one each side of the tire equator and extending continuously in the tire circumferential direction, and a crown land region between the two circumferential grooves. The crown land region is provided with first crown sipes extending from one of the circumferential grooves and terminating within the crown land region, and second crown sipes extending from the other circumferential groove and terminating within the crown land region.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: May 25, 2021
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Koji Matsuura, Tomoyuki Kujime
  • Patent number: 11014412
    Abstract: A pneumatic tire includes a block (41) formed by being partitioned by a main groove (15) and lateral grooves (20 and 25), and a block traversing sipe (45) which is a sipe longitudinally traversing the block (41), in which the block traversing sipe (45) has a zigzag shape that is constituted by a plurality of longitudinal sipe portions (42) extending in a circumferential direction of the tire, and a lateral sipe portion (43) extending in a tire width direction and connecting end portions of two longitudinal sipe portions (42), and a longitudinal sipe portion (42) closer to a kick-out side of the block (41) has a narrower width.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: May 25, 2021
    Assignee: TOYO TIRE CORPORATION
    Inventor: Toshikazu Yasunaga
  • Patent number: 11007823
    Abstract: Provided is a tire in which a first land portion partitions a first main groove from a second main groove. A first lug groove and a first sipe are provided in the first land portion. One end of the first lug groove communicates with the first main groove. The first sipe includes one end communicating with the second main groove and another end communicating with another end of the first lug groove. The first sipe includes a steeply inclined portion extending from the another end of the first lug groove and having an angle with respect to a tire circumferential direction smaller than that of the first lug groove, and a gently inclined portion extending from the steeply inclined portion to the second main groove and having an angle with respect to the tire circumferential direction larger than that of the steeply inclined portion.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 18, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroshi Arai
  • Patent number: 10981419
    Abstract: A ratio between the total width (SW) and outer diameter (OD) of a pneumatic tire, which has an asymmetrical pattern formed by grooves formed on a tread part, satisfies SW/OD?0.3. Given a ground contact width (CW) in a ground contact region in the tread part, a groove area ratio (GR), and a groove area ratio (GRi) of a tire inner side region (Ai), which spans from a tire equator line (CL) to the vehicle side in the ground contact region, and a groove area ratio (GRo) of a tire outer side region (Ao), which spans from the tire equator line to the opposite side of the vehicle side in the ground contact region, the ground contact region is formed to satisfy 0.75?CW/SW?0.9, 10?GR?25%, and GRi<GRo.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: April 20, 2021
    Inventors: Masataka Kubota, Yuji Minami
  • Patent number: 10967683
    Abstract: The pneumatic tire comprises a tread portion 2 provided with first sipes 25 and second sipes 26 and having a first tread half portion 21 and a second tread half portion 22. The first sipes 25 are smoothly continued from a crown land region 10 in the second tread half portion 22 to a shoulder land region 13 in the first tread half portion 21 through a crown main groove 3 and a shoulder main groove 5. The second sipes 26 extend from the crown land region 10 in the second tread half portion 22 toward a second tread edge Te2.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tomoyuki Kujime, Hiroshi Okagawa
  • Patent number: 10967684
    Abstract: A tire includes a tread portion including a first land portion defined between circumferentially extending first and second edges. The first land portion is provided with first and second lateral grooves respectively extending from the first and second edges and terminating within the first land portion and a circumferentially extending first longitudinal narrow groove in communication with the first and second lateral grooves. Each of the first and second lateral grooves includes a wide-width portion and a narrow-width portion. The wide-width portion of each of the first lateral grooves extends from the first edge and the wide-width portion of each of the second lateral grooves extends from the second edge. The first longitudinal narrow groove passes through the narrow-width portion of each of the first and second lateral grooves without passing through the wide-width portion of each of the first and second lateral grooves.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroaki Ninomiya
  • Patent number: 10953701
    Abstract: A tire includes a tread portion being provided with a circumferentially extending main groove to define a first land portion between the main groove and a tread edge. The main groove includes a groove bottom, an outer groove wall extending radially outwardly and inclined toward the tread edge, and an inner groove wall extending radially outwardly and inclined toward the tire equator. The groove bottom extends in a zigzag manner in a tire circumferential direction in such a manner as to alternate between a first location where the groove bottom is located nearest to the tire equator and a second location where the groove bottom is located nearest to the tread edge. An angle ?2b of the outer groove wall in a groove cross-section at the second location is greater than an angle ?1a of the inner groove wall in a groove cross-section at the first location.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: March 23, 2021
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Keita Okuno
  • Patent number: 10933698
    Abstract: Provided is a tire comprising a radial direction, an axial direction, a circumferential direction, and a tire lug. The tire lug may be bounded by a plurality of surfaces. The plurality of surfaces may comprise a top surface and a first side surface oriented at a first angle to the top surface. The top surface may extending in the axial direction and the circumferential direction. The first angle may be greater than 90 degrees. The first side surface may comprise a first cavity of the first side surface. The first side surface may have a height and a width.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 2, 2021
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventor: Paula R. Lundgren
  • Patent number: 10913314
    Abstract: A pneumatic tire comprises a tread surface of a tread portion comprising land portions defined by three circumferential grooves extending in the tire circumferential direction and main lug grooves forming intra-land portions divided in the tire circumferential direction; the intra-land portions being divided by the laterally outer circumferential grooves, the main lug grooves, and circumferential narrow grooves to form long small land portions, which are long in the tire circumferential direction); and the intra-land portions being divided by the laterally central circumferential groove, the main lug grooves, subsidiary lug grooves, and the circumferential narrow grooves to form two short small land portions, which are short in the tire circumferential direction.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 9, 2021
    Inventor: Naoko Suzuki
  • Patent number: 10894446
    Abstract: A tire comprises a tread portion 2. The tread portion 2 comprises a first main groove 11 and a second main groove 12 extending continuously in a tire circumferential direction, and a land region 21 defined between the first main groove 11 and the second main groove 12. The land region 21 is provided with a plurality of lateral grooves 15. Each of the lateral grooves 15 comprises a first lug groove portion 16 extending obliquely with respect to a tire axial direction from the first main groove 11, a second lug groove portion 17 extending obliquely in a same direction as the first lug groove portion 16 from the second main groove 12, and a sipe portion 18 extending obliquely in an opposite direction to the first lug groove portion 16 so as to connect between the first lug groove portion 16 and the second lug groove portion 17.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroshi Yamaoka
  • Patent number: 10875361
    Abstract: A pneumatic tire is provided with, in the tread surface, land portions that include a rib or a plurality of blocks. The land portions are provided with a plurality of narrow shallow grooves and a plurality of recessed portions in a contact patch. The opening area ratio Se of the recessed portions in the end portion regions in the tire lateral direction of one continuous contact patch and the opening area ratio Sc of the recessed portions in the central portion region in the tire lateral direction have the relationship Sc<Se, where the central portion region is defined as the region in the central portion in the tire lateral direction occupying 50% of the continuous contact patch of the land portions, and the end portion regions are defined as the regions in the left and right end portions in the tire lateral direction occupying 25%.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 29, 2020
    Inventor: Hiroshi Furusawa
  • Patent number: 10871595
    Abstract: Provided are compositions comprising a block copolymer of the following formula: [A]-B-[Q], wherein [A] is a polymer that has an affinity for a substrate; B is a linking group comprising an optionally-substituted, polyvalent linking group having a molecular weight of no more than 1000 g/mole; and [Q] comprises a semi-crosslinked, ungelled polymer derived from copolymerization of an ethylenically unsaturated monomer with a poly-functional ethylenically unsaturated monomer. Such block copolymers are cross-linked via the [Q] segment, but not macroscopically gelled. The [Q] segment is hydrophilic and has a degree of polymerization in the range of about 10 to about 10,000. The [A] segment is located on at least one terminal end of said block copolymer, comprises between about 1 and about 200 repeating units. The block copolymer is associated, via the linear substrate associative segment with a surface comprising at least one hydrophobic site, such as a silicone hydrogel.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: December 22, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Charles W. Scales, Kevin P. McCabe, Brent Matthew Healy
  • Patent number: 10864777
    Abstract: The device for monitoring the wear of a tread during running comprises at least one internal cavity intended to form a void opening on to a tread surface after predefined partial wearing of the tread, this tread comprising a wear limit corresponding to a maximum thickness of wearable material, this device comprising a measurement well opening on to the tread surface, this measurement well having a bottom formed of a first part and of a second part which are offset from one another in the depth, these two parts of the bottom being situated at different distances with respect to the tread surface when new.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 15, 2020
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique, S.A.
    Inventors: Benjamin Quantinet, Damien Bardin, Stephanie Cambon, Jonathan Lejeune
  • Patent number: 10850565
    Abstract: A pneumatic tire includes a tread portion, sidewall portions, bead portions, and has at least one carcass layer disposed between the pair of bead portions. The ratio SW/OD between the total tire width SW and the tire external diameter OD satisfies the relationship SW/OD?0.3. A first region A is defined between a pair of first boundary lines (L1, L1), second regions B are defined between a first boundary line (L1) and a second boundary line (L2), and third regions C are defined on the bead toe side of the second boundary lines (L2). Defining SA, SB, and SC as the cross-sectional area (mm2) of the first region A to the third region C, and defining the peripheral lengths (mm) of the first region A to third region C along the tire inner surface as a, b, and c, respectively, the relationship 7.5?SA/a?11.5 is satisfied.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 1, 2020
    Inventors: Yuji Minami, Masatoshi Shimizu
  • Patent number: 10836215
    Abstract: A tire includes a tread portion including at least one land portion having axially spaced first and second ends. The at least one land portion is provided with lateral grooves extending from the first end to terminal ends terminating within the at least one land portion, first sipes each extending along a tire circumferential direction to connect a pair of lateral grooves arranged adjacently in the tire circumferential direction, second sipes extending from the first end toward the first sipes, and third sipes extending from the second end toward the first sipes. The second sipes and the third sipes are arranged without intersecting the lateral grooves.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: November 17, 2020
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Eisuke Hirosue, Hiroshi Kikuchi, Tomohisa Kuriyama
  • Patent number: 10828939
    Abstract: A pneumatic tire comprises a tread portion; four main grooves extending in a tire circumferential direction in a tread surface of the tread portion, each having a wave-like shape with periodic oscillation; a center land portion, middle land portions adjacent to the center land portion on either side in a tire lateral direction, and shoulder land portions outwardly adjacent to the middle land portions in the tire lateral direction formed by the main grooves; a plurality of lug grooves that intersect the tire circumferential direction disposed in a row in the tire circumferential direction in the land portions, the plurality of lug grooves each being disposed on a smooth, continuous curved line that crosses the land portions between the outer ends of the tread portion in the tire lateral direction.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: November 10, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masatoshi Kuriyama
  • Patent number: 10821780
    Abstract: A tire 1 includes shoulder regions 4 each provided with first lateral grooves 7 and second lateral grooves 8. Each of the first lateral grooves 7 includes an inner portion 11 that extends axially outwardly from an inner end (7i) arranged axially outside a crown main groove 3 with a space therebetween and obliquely at an angle ?1 with respect to the tire axial direction, and an outer portion 12 that extends obliquely at an angle ?2 smaller than the angle ?1 with respect to the tire axial direction so as to cross a tread edge (Te). Each of the second lateral grooves 8 is arranged between adjacent first lateral grooves and extends axially outwardly from an inner end (8i) thereof arranged axially outside the crown main groove and obliquely in the same direction as the first lateral grooves 7 so as to terminate without reaching the tread edge (Te).
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 3, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takashi Okada, Yoshifumi Kawagoe
  • Patent number: 10821781
    Abstract: A tire includes a tread part having main grooves and lands demarcated by the main grooves. A crown land between a pair of crown main grooves includes first crown lug grooves extending from one crown groove to tire axial direction inner side and terminated within the crown land, second crown lug grooves extending from the other crown groove to the tire axial inner side and terminated within the crown land, and first crown sipes formed at tire circumferential direction positions and connecting the crown grooves, each first crown sipe includes a first side crown sipe piece extending from one crown groove to the tire axial inner side, a second side crown sipe piece not positioned on an extension line of the first side piece and extending from the other crown groove to the tire axial inner side, and a connecting crown sipe piece connecting the first and second sipe pieces.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: November 3, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Toshiki Horiguchi, Hiroshi Yamaoka, Yoshiaki Kanematsu
  • Patent number: 10800210
    Abstract: A tire includes a tread portion being provided with a crown main groove extending continuously in a zigzag manner in a tire circumferential direction and a shoulder main groove extending continuously in a zigzag manner in the tire circumferential direction. The shoulder main groove is arranged outwardly of the crown main groove in a tire axial direction. The crown main groove has a number of zigzag pitches in a range of from 0.21 to 0.32 times a number of zigzag pitches of the shoulder main groove.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: October 13, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Takashi Nishiwaki
  • Patent number: 10780745
    Abstract: The tread has a total width W and is provided with circumferential cuts that have a mean depth at least equal to 70 mm and at most equal to the thickness of wearable material. The circumferential cuts divide the tread into a middle region with an axial width Wm of 50% to 80% of the total width W. The middle region has transverse or oblique sipes opening into the circumferential cuts and closing at least in part when they enter the contact patch. The sipes have a depth at least equal to 75% of the depth of the circumferential cuts and delimit elements of material of height equal to the mean depth H of the said sipes and of circumferential length B equal to the mean distance between two sipes. For all the elements of material, the ratio H/B is greater than 0.5 and at most equal to 2.5.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 22, 2020
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Francois Barbarin, Guillaume Demaziere
  • Patent number: 10766312
    Abstract: A pneumatic tire comprises a tread portion 2 provided with a circumferential land region 6 provided with a plurality of combined sipes 35 (36, 37). The combined sipes 35 (36, 37) are each composed of a straight portion 34 extending from one edge toward the other edge of the circumferential land region 6, and an arc-shaped portion 33 extending from the straight portion 34 to the other edge of the circumferential land region 6. The combined sipes 35 include a first combined sipe 36 in which the maximum depth of its arc-shaped portion 33 is larger than the maximum depth of its straight portion 34, and a second combined sipe 37 in which the maximum depth of its straight portion 34 is larger than the maximum depth of its arc-shaped portion 33.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 8, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Aya Wakizono, Yoshiaki Kanematsu
  • Patent number: 10766311
    Abstract: A pneumatic tire includes a tread portion including an inboard shoulder land portion defined between an inboard tread edge and an inboard shoulder main groove. The inboard shoulder land portion is provided with inboard semi-open shoulder lateral grooves and inboard shoulder sipes extending axially inwardly from the inboard tread edge and terminate within the inboard shoulder land portion.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 8, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroki Uno
  • Patent number: 10759228
    Abstract: To provide a pneumatic tire with improved performance and balance in terms of fuel efficiency, steering stability performance and wear life. The total width SW, outside diameter OD, tread groove depth Ga, center groove depth Gc and shoulder groove depth Gs satisfy the relationships SW/OD?0.3, Ga?0.02×SW+2.5 and Gc>Gs.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: September 1, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masataka Kubota, Yuji Minami
  • Patent number: 10744824
    Abstract: This disclosure aims to provide a pneumatic tire having improved noise reduction performance exhibited by a resonator. The pneumatic tire according to this disclosure has at least two circumferential grooves extending continuously on a tread surface, and has a resonator disposed on a land portion partitioned by two circumferential grooves among the circumferential grooves, the resonator having an air chamber opening toward a land portion surface at a position spaced from the circumferential grooves, one a more one-side narrow necks connecting the air chamber to one circumferential groove of the two circumferential grooves, and one or more other-side narrow necks connecting the air chamber to the other circumferential groove, the one-side narrow neck and the other-side narrow neck having cross section areas approximately identical to each other, and an extending length of the one-side narrow neck and an extending length of the other-side narrow neck being different.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: August 18, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tokumasa Akashi
  • Patent number: 10744823
    Abstract: A tire comprises a tread portion having an outboard tread edge To and an inboard tread edge Ti. The tread portion is provided with: an outboard shoulder main groove extending continuously in the tire circumferential direction; an outboard crown main groove extending continuously in the tire circumferential direction and disposed between the outboard shoulder main groove and a tire equator; and outboard lateral grooves extending from the outboard crown main groove to the outboard tread edge To. The groove width of each of the outboard lateral grooves is decreased toward the outboard crown main groove 4.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: August 18, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yuki Fujimoto
  • Patent number: 10730351
    Abstract: A pneumatic tire includes a center land portion, intermediate land portions, and shoulder land portions, the land portions being partitioned and formed by four main grooves, and a plurality of lug grooves and sipes disposed in the land portions. The lug grooves disposed in the shoulder land portions do not communicate with the second main grooves. The groove area ratio is greater in the center region than in the shoulder regions. The distance (L1) from the tire equator to the center in the tire width direction of the first main groove is 15 to 25% of the distance (L) from the tire equator to the ground contact edge. The distance (L2) from the tire equator to the center in the tire width direction of the second main groove is 50 to 65% of the distance (L) from the tire equator to the ground contact edge.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: August 4, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiroshi Fujii
  • Patent number: 10717327
    Abstract: Tire tread comprising elongate block (3) of rubbery material extending in a circumferential direction of the tire. Elongate block (3) comprises ground contact surface (5) delimited by first and second lateral walls (7, 9). Elongate block (3) comprises successive sets of cutouts (6) in the circumferential direction, each set extending in an oblique direction and opening onto the first and second lateral walls, and distributed over the ground contact surface such that, when a set of cutouts reaches second lateral wall (9), another set of cutouts starts out from first lateral wall (7) at the same circumferential level. Each set of cutouts comprises two cutouts, each one extending as far as a cutout end (13a, 13b) which does not open onto a lateral wall. Ends such two cutouts are disposed at the same circumferential level. Cutouts of the same set of cutouts do not overlap in a transverse direction.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: July 21, 2020
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Olivier Muhlhoff, Benoit Durand-Gasselin
  • Patent number: 10710414
    Abstract: Tire having a predetermined direction of mounting on a vehicle. The tire tread (40) comprises a central rib (411-413) and two side ribs (421, 422), separated by circumferential grooves (141-144). The side ribs are made from a first rubber composition less than 50% filled with black. The central rib comprises a portion (4111, 4121) made from a second rubber composition more than 50% filled with black, the axial width (LP) of said portion being greater than or equal to 20% of the axial width LC of the central rib. The first rubber composition has a tan ?0 value which is greater than the tan ?0 value of the second rubber composition, where tan ?0 denotes the tan ? value measured at a temperature of 0° C. and under a stress of 0.7 mPa.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 14, 2020
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Frédéric Bourgeois, François-Xavier Bruneau, Patrice Fraysse, Emmanuel Igier
  • Patent number: 10688832
    Abstract: An object of the present invention is to provide a pneumatic tire capable of facilitating heat dissipation of a tread portion thereof to lower temperature at the tread portion. Specifically, the present invention provides a pneumatic tire having in a tread surface at least one circumferential groove extending in the tire circumferential direction and plural lateral grooves, the lateral grooves each opening to the circumferential groove, having a wider groove width than the circumferential groove and extending to be inclined with respect to the tire circumferential direction, comprising: a recessed portion formed in a groove wall, facing the corresponding lateral groove, of the circumferential groove; and at least one projecting portion formed at a groove bottom of the circumferential groove between the recessed portions adjacent to each other in the tire circumferential direction.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: June 23, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kazutaka Matsuzawa, Shun Oogane, Yuki Kawakami
  • Patent number: 10668774
    Abstract: A pneumatic tire has a plurality of circumferential main grooves extending in the tire circumferential direction, a plurality of lug grooves extending in the tire width direction, and a plurality of blocks partitioned by the circumferential main grooves and the lug grooves. Also, the block has a bent groove having a bent shape that is convex in one direction and that extends in the tire circumferential direction dividing the block into two in the tire width direction. Also, the blocks that are adjacent to each other in the tire circumferential direction are disposed such that the bend directions of the bent grooves are alternately reversed.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: June 2, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiraku Kouda
  • Patent number: 10661607
    Abstract: The pneumatic tire of this disclosure includes on a tread surface at least one circumferential main groove having a groove width cyclically varying, and a lib-like land portion, wherein: among the lib-like land portions, a lib-like land portion disposed on at least one side of the circumferential main groove is formed in a shape such that: an outline shape of the lib-like land portion has a shape forming a protrusion, a tire widthwise position of the apex being equal on a tire circumference; a widthwise end portion adjacent to the circumferential main groove of the lib-like land portion is located on a side 0.3 mm or more inner than a position of the apex; an area on a tire widthwise end side of the tread surface of the lib-like land portion has a descending area with a width of 3% or more of the width of the lib-like land portion.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: May 26, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Shinpei Sugiyasu
  • Patent number: 10654320
    Abstract: A tire includes a tread having a crown main groove and shoulder main grooves extending in the tire circumferential direction. The crown groove has crown long side portions and crown short side portions inclined in the opposite directions and alternately formed in a zigzag shape extending in the tire circumferential direction, the shoulder main grooves have shoulder long side portions and shoulder short side portions inclined in the opposite directions and alternately formed in a zigzag shape extending in the tire circumferential direction, the crown main groove and shoulder main grooves are formed such that a crown long-short ratio La/Lb is larger than a shoulder long-short ratio Lc/Ld, where La is a length of each crown long side portion, Lb is a length of each crown short side portion, Lc is a length of each shoulder long side portion, and Ld is a length of each shoulder short side portion.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: May 19, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Atsushi Maehara
  • Patent number: 10647160
    Abstract: 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 (10) on a tread surface (1), extending at an inclination to the tire circumferential direction, the groove width (W1) being smaller than the groove depth (D1), an air inflow part (11) opening to the tread surface (1) and formed on at least one of the groove walls (10c) of the narrow groove (10) that face each other in the tire circumferential direction, and a wear prevention portion (12) formed by a protrusion or concavity on a groove wall (10c) that faces the other groove wall (10c) on which the air inflow part (11) is formed or on the tread surface (1) connecting to the groove wall (10c) that faces the other groove wall (10c).
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 12, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Shun Ogane
  • Patent number: 10639937
    Abstract: A pneumatic tire comprising circumferential main grooves, a land portion defined by the circumferential main grooves, and a plurality of lug grooves disposed in the land portion that open to the circumferential main grooves. The land portion comprises notch portions formed on opening portions of the lug grooves and chamfered portions formed on edge portions of the notch portions. The notch portions have an edge portion with a V-shape projecting in a tire circumferential direction. A maximum width W2 of the notch portions and a width W3 of the chamfered portions have the relationship 0.30?W3/W2?1.80.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 5, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Tomohisa Nishino
  • Patent number: 10632793
    Abstract: A tire (10) includes, in a tread surface (11): at least two circumferential grooves (12, 13) extending in a tire circumferential direction; and a land portion (14) sandwiched between the circumferential grooves (12, 13). The land portion (14) has a resonator (15) including: an air chamber (16); a first branch groove (17); and a second branch groove (18). The two circumferential grooves consist of: a first circumferential groove (12) having a smaller cross-sectional area in a cross section along a plane perpendicular to extending direction of the circumferential grooves; and a second circumferential groove (13) having a larger cross-sectional area in a cross section along a plane perpendicular to extending direction of the circumferential grooves. A centroid (C) of the air chamber (16) is situated to a side closer to the first circumferential groove (12) with respect to a tire widthwise center (CL) of the land portion (14).
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: April 28, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tokumasa Akashi
  • Patent number: 10618355
    Abstract: A pneumatic tire comprises a tread portion 2 having an outside tread edge Teo and an inside tread edge Tei to be positioned outside and inside, respectively, with respect to a vehicle. The tread portion 2 is axially divided into land regions 4 by four main grooves 3 including an outside shoulder main groove 5, an inside shoulder main groove 6 and two crown main grooves 7. The outside shoulder main groove 5 has a width smaller than the inside shoulder main groove 6 and the crown main grooves 7. The land portions 4 include an inside shoulder land region 10 provided with inside shoulder lateral grooves 17. Each of the land regions 4 is provided with sipes 20 each extending across the entire width of the land region and having a width less than 3 mm.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: April 14, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Ryuhei Sanae
  • Patent number: 10611193
    Abstract: A pneumatic tire provided with, in a tread surface, at least two main circumferential grooves, and a first land portion defined by the two main grooves, wherein in the first land portion, the followings are disposed: a first inclined groove; inclining relative to a tire width direction, and having one end portion opening in the main groove on one side adjacent to the first land portion and the other end portion terminating within the first land portion, and a first notched portion; having one end in a tire width direction as a tip positioned at an endmost, in a tire width direction, of the other end portion of the first inclined groove and the other end in a tire width direction opening in the main groove on the other side adjacent to the first land portion.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: April 7, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Keiichi Kato