Having Groove Or Sipe With Specified Dimension Or Structure Therewithin Patents (Class 152/209.18)
  • Patent number: 11453247
    Abstract: A pneumatic tire comprises at least one block partitioned by a block partitioning groove, the at least one block comprises a first block groove extending from an edge toward a first side in a tire circumferential direction of the at least one block so as to be directed toward a second side in the tire circumferential direction, and a second block groove extending from an edge toward the second side in the tire circumferential direction of the at least one block so as to be directed toward the first side in the tire circumferential direction, and the first block groove and the second block groove appear to overlap as viewed in a tire width direction.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: September 27, 2022
    Assignee: TOYO TIRE CORPORATION
    Inventor: Yoshiki Sato
  • Patent number: 11446963
    Abstract: A tyre includes a tread portion including a first middle land portion, a second middle land portion, a first shoulder land portion, and a second shoulder land portion. The first middle land portion is provided with first middle lateral grooves terminating within the first middle land portion, the second middle land portion is provided with second middle lateral grooves terminating within the second middle land portion, the first shoulder land portion is provided with first shoulder lateral grooves, and the second shoulder land portion is provided with second shoulder lateral grooves. The first middle lateral grooves and the second middle lateral grooves are inclined in a first direction with respect to the tyre axial direction, and the first shoulder lateral grooves and the second shoulder lateral grooves are inclined in a second direction opposite to the first direction with respect to the tyre axial direction.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 20, 2022
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Maiko Tanabe, Ryo Oba, Tetsuya Maekawa
  • Patent number: 11446965
    Abstract: In a pneumatic tire, a sipe includes an edge on a leading side and an edge on a trailing side; the edge on the leading side and the edge on the trailing side each include a chamfered portion shorter than a sipe length of the sipe; a non-chamfered region in which other chamfered portions are not present is provided at portions facing the chamfered portions of the sipe; and for all chamfered portions, including at least the chamfered portions of the sipe, formed on grooves other than main grooves, a total projected area AIN of the chamfered portions located on a vehicle mounting inner side and a total projected area AOUT of the chamfered portions located on a vehicle mounting outer side satisfy a relationship AIN>AOUT.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 20, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takanori Uemura, Takayuki Shiraishi, Hiraku Kouda, Tatsuro Shinzawa
  • Patent number: 11433710
    Abstract: A pneumatic tire is provided with a sipe including an edge on a leading side and an edge on a trailing side. The edge on the leading side and the edge on the trailing side each include a chamfered portion shorter than a sipe length of the sipe. A non-chamfered region in which other chamfered portions are not present is provided at portions facing the chamfered portions of the sipe. For all chamfered portions, including at least the chamfered portions of the sipe, formed on grooves other than main grooves, a total volume SIN of the chamfered portions located on a vehicle mounting inner side and a total volume SOUT of the chamfered portions located on a vehicle mounting outer side satisfy a relationship SIN>SOUT.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 6, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takayuki Shiraishi, Hiraku Kouda, Tatsuro Shinzawa, Takanori Uemura
  • Patent number: 11433713
    Abstract: In a pneumatic tire, a sipe includes an edge on a leading side and an edge on a trailing side; the edge and the edge each include a chamfered portion shorter than a sipe length of the sipe; a non-chamfered region in which other chamfered portions are not present is provided at portions facing the chamfered portions of the sipe; and for all chamfered portions, including at least the chamfered portions of the sipe, formed on grooves other than main grooves, with a ground contact width being equally divided into three in the tire lateral direction, a total volume SCE of chamfered portions provided in a center region centrally located in the tire lateral direction and each of total volumes SSH of chamfered portions provided in shoulder regions located on either side of the center region satisfy a relationship SCE<SSH.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: September 6, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hiraku Kouda, Takayuki Shiraishi, Tatsuro Shinzawa, Takanori Uemura
  • Patent number: 11427032
    Abstract: The present invention relates to a tire tread comprising a tread cap comprising at least one tread cap rubber compound, at least three circumferential grooves, wherein at least portions of the sidewalls and the bottom of each of said grooves are formed by a circumferential groove reinforcement, and wherein a first groove reinforcement of a groove laterally next to the equatorial plane of the tire comprises a first reinforcement rubber compound which has a higher hardness than the tread cap rubber compound, and wherein a second groove reinforcement of a groove with a larger lateral distance to the equatorial plane of the tire than the first groove, comprises a second reinforcement rubber compound which has a higher hardness than the tread cap rubber compound and a lower hardness than the second reinforcement rubber compound.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: August 30, 2022
    Assignee: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Claude Schweitzer, Jean-Louis Marie Felicien Thomas, Bodo Ahrens
  • Patent number: 11427035
    Abstract: A pneumatic tire is provided with four or more circumferential main grooves extending in a tire circumferential direction and five or more land portions defined by the circumferential main grooves. Additionally, second land portions are each provided with first through lug grooves and second through lug grooves that extend through the second land portion in a tire lateral direction and are adjacently arranged in the tire circumferential direction. Crossing angles of the first through lug grooves and the second through lug grooves with respect to the outermost circumferential main grooves are mutually different.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 30, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Yasutaka Akashi
  • Patent number: 11427033
    Abstract: A tire having an outer middle land portion demarcated between an outer shoulder circumferential groove and an outer crown circumferential groove and located at an outer side of a vehicle when the tire is mounted on the vehicle, and an inner middle land portion demarcated between an inner shoulder circumferential groove and an inner crown circumferential groove and located at an inner side of the vehicle when the tire is mounted on the vehicle formed in a tread portion. The outer middle land portion has first outer middle sipes extending from the outer crown circumferential groove toward the outer shoulder circumferential groove and terminating within the outer middle land portion. The inner middle land portion has first inner middle sipes extending from the inner shoulder circumferential groove toward the inner crown circumferential groove and terminating within the inner middle land portion.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kanako Hamaoka
  • Patent number: 11407255
    Abstract: A pneumatic tire includes: main grooves in a tread, extending in a circumferential direction in alignment in a lateral direction, defining a center land on an equatorial plane and middle lands on outer sides in the lateral direction; a sipe formed in the center land communicating with a center main groove and terminating within the center land, the sipe bending halfway through its length; a circumferential narrow groove in each of the middle lands dividing the middle lands into a rib-shaped middle inner land and a middle outer land; and lug grooves formed in the middle outer land in alignment in the circumferential direction, communicating with a shoulder main groove and the circumferential narrow groove and dividing the middle outer land into blocks. A width d1 of the middle inner land and a groove width d2 of the circumferential narrow groove satisfy a relationship of 0.1?d2/d1?0.4.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: August 9, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masahiro Ebiko
  • Patent number: 11400764
    Abstract: A tire includes a tread part including a land portion such that the land portion has a tread surface formed between a first edge extending in a tire circumferential direction and a second edge extending in the tire circumferential direction. The land portion includes long sipes, middle sipes, and short sipes such that each of the long sipes is extending from the first edge to the second edge, that each of the middle sipes is extending from one of the first edge and the second edge and terminating in the land portion at a point beyond a tire axial direction center position of the land portion, and that each of the short sipes is extending from one of the first edge and the second edge and terminating in the land portion without extending to a point beyond the center position.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: August 2, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventor: Yoshiaki Kanematsu
  • Patent number: 11396210
    Abstract: The invention is directed to a pneumatic vehicle tire having a tread with profile positives which are separated from one another in a circumferential direction by transverse channels which extend continuously from the central region of the tread to the lateral tread edges and which are main channels of the tread and which, at least over the major part of the course thereof, have the maximum provided profile depth. The tread has, as profile positives, two rows of transverse ribs which are of encircling form in the circumferential direction and which are separated from one another by respective transverse channels. The tread is of directional configuration, wherein the transverse ribs of one row, and thus the transverse channels running between the transverse ribs, run, with respect to the axial direction, oppositely in relation to the transverse ribs and transverse channels of the other row.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: July 26, 2022
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Chun Yi Yeo, Andreas Haertwig, Florian Kristen
  • Patent number: 11390122
    Abstract: A tire has a tread surface, the tread surface including a circumferential groove extending in a tire circumferential direction, a lug groove extending in a direction intersecting the circumferential groove, and a plurality of land parts partitioned by the circumferential groove and the lug groove. A width-direction groove extending in a tire widthwise direction is formed on a land part of the plurality of land parts. An in-groove sipe is arranged along one side edge of a groove bottom of the width-direction groove.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: July 19, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Satoshi Ishikawa, Akihiro Kawakita
  • Patent number: 11376890
    Abstract: A pneumatic tire according to the present embodiment includes a shoulder main groove that is disposed on one side in a width direction from a tire equatorial plane and extends in a tire circumferential direction, a shoulder land portion that is formed between a ground contact end and the shoulder main groove, and a plurality of slits that divide the shoulder land portion into a plurality of blocks in the tire circumferential direction. The shoulder main groove is formed of a zigzag groove in which an inward bent portion and an outward bent portion are alternately and repeatedly disposed, and angles of the slits with respect to the tire width direction are provided to be 10 degrees or less.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: July 5, 2022
    Assignee: TOYO TIRE CORPORATION
    Inventor: Tetsuji Miyazaki
  • Patent number: 11370253
    Abstract: A tire includes a tread portion provided with lateral grooves extending in a tire axial direction and blocks divided by the lateral grooves. At least one of the lateral grooves is provided with a first projected portion with a bottom protruding from a groove bottom of the at least one of the lateral grooves. The first projected portion includes at least one tie-bar portion connecting a pair of blocks with each other which is arranged adjacently through the at least one of the lateral groove, and a narrow rib-portion extending in a longitudinal direction of the at least one of the lateral groove from the at least one tie-bar portion without being connected to the pair of blocks.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: June 28, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takafumi Hoshino, Yuya Meguro
  • Patent number: 11364746
    Abstract: A rib of a pneumatic tire includes a first sipe extending from one of main grooves positioned on both sides of the rib and a second sipe extending from another one of the main grooves, one end portion of the first and second sipes terminating within the rib. The first and second sipes form a pair of sipes including edges on leading and trailing sides. Chamfered portions shorter than a total sipe length of the pair of sipes are formed on respective edges and non-chamfered regions exist on portions opposing respective chamfered portions in the pair of sipes. A maximum depth x (mm) of the sipes and a maximum depth y (mm) of the chamfered portion satisfy x×0.1?y?x×0.3+1.0. A sipe width is constant in a range from a portion positioned inside in a tire radial direction of the chamfered portion to a bottom of the sipes.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: June 21, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takanori Uemura, Hiraku Kouda, Tatsuro Shinzawa
  • Patent number: 11364745
    Abstract: A pneumatic tire includes, in a tread portion, main grooves extending in a circumferential direction; ribs defined by the main grooves; at least one rib comprising sipes extending in a lateral direction; the sipes comprising a chamfered sipe with a chamfer portion provided on at least one edge, and a non-chamfered sipe with no chamfer portion provided on an edge; the chamfered sipe comprising one end portion terminating in the at least one rib and another end portion communicating with one of the main grooves located on either side of the at least one rib; a plurality of the chamfered sipes communicating with one of the main grooves located on either side of the at least one rib being alternately disposed in the circumferential direction; and the non-chamfered sipe being disposed close to the chamfered sipe on at least one side in the circumferential direction.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: June 21, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masatoshi Shimizu
  • Patent number: 11358416
    Abstract: A tire includes a tread portion including at least one land region extending in a tire circumferential direction. The land region is provided with a plurality of axial groove portions curved so as to protrude in one direction in the tire circumferential direction in a plan view. The axial groove portions include first axial groove portions and second axial groove portions having different degree of curvature from the first axial groove portions.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 14, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Takahiro Kimishima
  • Patent number: 11345191
    Abstract: A pneumatic vehicle tire, in particular commercial vehicle tire, having a tread having in each case one shoulder-side profile rib (1) which is separated in each case from a central tread portion (3) by a wide circumferential groove (2) which is made to profile depth (T) and which runs around rectilinearly in the circumferential direction, wherein the circumferential groove (2) has a rounded groove base (8) and is delimited at the profile rib (1) by a rib flank (6).
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: May 31, 2022
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Paul Naglatzki, Florian Kristen, Christian Meiners, Frank Lippert
  • Patent number: 11345192
    Abstract: It is a tyre 1 provided in a tread portion 2 with blocks 3 having ground contacting surfaces (3a). At least one of the blocks 3 is provided with a chamfered portion 7 formed in such a manner that a corner portion (3k), where a vertical wall surface (3b), a lateral wall surface (3c), and the ground contacting surface (3a) intersect with each other, is cut out obliquely, and a chamfer edge 8 where the chamfered portion 7 and the ground contacting surface (3a) intersect. The chamfered portion 7 is provided with a plurality of first concave portions 9 extending inwardly in a tyre radial direction from the ground contacting surface (3a). The first concave portions 9 have wavy shapes having amplitudes in a longitudinal direction of the chamfer edge 8.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 31, 2022
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Koichi Nakajima
  • Patent number: 11338619
    Abstract: Provided is pneumatic tire in which a land portion includes a width direction sipe extending in a tread width direction, the width direction sipe includes, in a cross section along a depth direction, a linear portion extending from an opening of the width direction sipe toward a bottom of the width direction sipe, and a bent portion connected to the linear portion, bending and extending from a connecting portion with the linear portion to the bottom of the width direction sipe, and the linear portion of the width direction sipe has a length in the depth direction increasing as the linear portion extends from a center portion of the width direction sipe in the tread width direction toward an end portion in the tread width direction.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: May 24, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yoshiki Nakata
  • Patent number: 11325422
    Abstract: A tyre has a tread portion having a tread ground contacting surface and a main groove having a bottom surface and two groove wall surfaces extending outwardly in a tyre radial direction from the bottom surface. In a lateral cross section perpendicular to a length direction, at least one groove wall surface has an inner groove wall portion connected with the bottom surface and a protruding portion connected with the inner groove wall portion and having a protruding end protruding inwardly in a groove width direction from a groove reference line obtained by extending the inner groove wall portion. The protruding portion has an inclined surface portion extends obliquely between the protruding end and the tread ground contacting surface. When the tread portion in a reference state is loaded with a tyre load of 1.20 times a standard tyre load, the whole inclined surface portion contacts a flat surface.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: May 10, 2022
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Masayuki Fujita, Koichi Nakajima
  • Patent number: 11325430
    Abstract: A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 10, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Shiho Kamada
  • Patent number: 11312182
    Abstract: A first land region is defined between a first main groove and a second main groove extending in a tyre circumferential direction. The first land region is provided with a first oblique groove and a second oblique groove. The first oblique groove extends obliquely with respect to a tyre axial direction from the first main groove to have an end portion terminating within the first land region. The second oblique groove extends obliquely with respect to the tyre axial direction from the second main groove to intersect with a middle groove portion of the first oblique groove and terminate there.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: April 26, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroki Nagase
  • Patent number: 11285761
    Abstract: In a pneumatic tire 10 according to the present invention, as an average sipe interval hc defined by an average interval of sipes adjacent to each other in a tire circumferential direction in a center portion block, which is a block arranged at a position including a tire equatorial line, and an average sipe interval hs is defined in a shoulder portion block, which is a block located at an ground contact end in a tire width direction, a relation of 1.05?(hs/hc)?4.00 is fulfilled.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: March 29, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Akinori Oda, Yuji Kajiyama
  • Patent number: 11285759
    Abstract: In a pneumatic tire, one end of a first lug groove opens to an edge of an inner second land on the ground contact edge side, and at the other end terminates within the inner second land. One end of the second lug groove opens to the edge of the inner second land on a equatorial plane edge side, and the other end terminates within the inner second land. The first and second lug grooves are alternately arranged in the circumferential direction. In a region on the outer side in the width direction, a circumferential main groove on the equatorial plane side defining the outer second land has a bent shape with an amplitude in a lateral direction, and includes an acute angle bend bending at an edge on the equatorial plane side. The outside second land includes a lug groove opening to a position facing the bend.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: March 29, 2022
    Inventors: Ryosuke Nukushina, Isamu Kishizoe
  • Patent number: 11279177
    Abstract: A tire having a tread portion with: zigzag shoulder main grooves having a trapezoidal wave form comprising first and second circumferential segments and first and second oblique segments; and shoulder axial grooves extending from the shoulder main grooves beyond the tread edges. The shoulder axial grooves are respectively smoothly continued to the first oblique segments or the second oblique segments so as to form composite shoulder axial grooves whose groove widths are smoothly increased toward the axially outside of the tire.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 22, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hirokazu Takano
  • Patent number: 11267289
    Abstract: A tire includes having a tread portion that has three land portions defined by two crown main grooves that continuously extend in a tire circumferential direction and that are arranged across a tire equator. The three land portions include two shoulder land portions. At least one of the shoulder land portions includes a plurality of main inclined grooves that extend so as to be inclined. At least one of the main inclined grooves has an inner end and an outer end. The main inclined groove has a steeply-inclined portion that extends so as to be inclined from the inner end toward a tread end, and a gently-inclined portion that extends across the tread end from the outer end at an angle, relative to an tire axial direction, which is less than an angle of the steeply-inclined portion relative thereto. A length of the steeply-inclined portion is greater than a length of the gently-inclined portion.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: March 8, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroki Nagase
  • Patent number: 11260700
    Abstract: The present invention relates to a tire with main kerfs and sub-kerfs, and more particularly, to a tire with main kerfs and sub-kerfs, which maintains drainage performance and running and braking performance by additionally including an auxiliary groove and improves a flow of air and drainage performance by including an auxiliary flow tube.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: March 1, 2022
    Assignee: Hankook Tire Co., Ltd.
    Inventors: Eun Sil Lee, Myeong Rak Choi
  • Patent number: 11260699
    Abstract: A tire includes a tread having main grooves linearly continuously extending in tire circumferential direction, and a first land portion formed between the main grooves. The first land portion has first transverse grooves such that each first transverse groove is extending inclined in first direction with respect to tire axial direction and completely across the first land portion, and first blocks formed between the first transverse grooves such that one or more first blocks have a first slot extending from first side surface of the first block on one side in the tire axial direction, a second slot extending from second side surface of the first block on the opposite side in the tire axial direction, a first sipe extending from the first slot and terminating within the first block, and a second sipe extending from the second slot and terminating within the first block without intersecting the first sipe.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: March 1, 2022
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kiyotaka Ueyama
  • Patent number: 11241916
    Abstract: A plurality of main grooves extending from a tread center region including a tire equator to ground contact ends so as to be inclined with respect to a tire width direction are provided on a tread section at intervals in a tire circumferential direction. Sub-grooves extending in a direction crossing the tire width direction with a narrower groove width than the main grooves in the tread center region are provided. Tie bars connecting blocks separated by the sub-grooves are provided inside the sub-grooves.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: February 8, 2022
    Assignee: TOYO TIRE CORPORATION
    Inventor: Takeshi Miyamoto
  • Patent number: 11241917
    Abstract: A pneumatic tire, includes: an annular-shape tread portion; a sidewall portions; and bead portions. JIS hardness of tread rubber is within a range of 40 to 60 and snow traction index is 180 or higher. A rib positioned between circumferential grooves is demarcated in a center region of the tread portion. Closed grooves are formed in the rib. The closed grooves are inclined with regard to a tire axial direction such that a closed end faces a leading side. A groove wall of the closed groove on the leading side protrudes more outward in the tire axial direction than a groove wall on a trailing side. A difference between angles ?1 and ?2 of the groove walls on the leading and trailing sides of the closed grooves, respectively, with regard to the tire axial direction is within a range of 0°??1-?2?5°.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: February 8, 2022
    Inventor: Naruhiko Honda
  • Patent number: 11241919
    Abstract: A pneumatic tire is provided in which each of sipes has a leading-side edge and a trailing-side edge. A chamfered portion that is shorter than a sipe length of the sipe is formed on each of the leading-side edge and the trailing-side edge. The sipe includes, at sections facing the chamfered portions, non-chamfered regions in which other chamfered portions are not present. Both end portions of the sipe are terminated inside a rib. A maximum depth x (mm) of the sipe 11 and a maximum depth y (mm) of the chamfered portion 12 satisfy a relationship x×0.1?y?x×0.3+1.0. A sipe width of the sipe is constant in a region between an end portion of the chamfered portion positioned on an inner side in the tire radial direction and a groove bottom of the sipe.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 8, 2022
    Inventor: Mizuki Kuninaka
  • Patent number: 11220138
    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 shoulder land region defined on the axially outside of each of the two circumferential grooves. The shoulder land region is provided with oblique grooves inclined with respect to the tire axial direction. The oblique grooves include first oblique grooves having axially inner ends, and second oblique grooves having axially inner ends positioned axially outside the axially inner ends of the first oblique grooves.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: January 11, 2022
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Tomoyuki Kujime
  • Patent number: 11214098
    Abstract: A pneumatic tire includes at least four circumferential main grooves extending in a tire circumferential direction and at least five land portions defined by the at least four circumferential main grooves. A center land portion includes a plurality of center lug grooves extending through the center land portion in a tire lateral direction and disposed at predetermined intervals in the tire circumferential direction, and a plurality of center blocks that are defined by the plurality of center lug grooves. The center blocks each include a narrow shallow groove that extends through the center block in the tire lateral direction and that remains open when the tire comes into contact with the ground.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: January 4, 2022
    Inventor: Hideki Hamanaka
  • Patent number: 11207922
    Abstract: A tire comprises a tread portion whose position when mounted on a vehicle is specified. The tread portion includes an inner crown land region defined between a crown main groove and an inner shoulder main groove. The inner crown land region includes crown lateral grooves, first inner crown sipes, second inner crown sipes each extending from the inner shoulder main groove toward the crown main groove and having an inner end terminating within the inner crown land region, and third inner crown sipes each extending from the crown main groove toward the inner shoulder main groove and having an outer end terminating within the inner crown land region. The crown lateral grooves each have a length in a tire axial direction larger than that of each of the second inner crown sipes.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: December 28, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mahito Arai, Masashi Wakasugi, Hiroki Omura
  • Patent number: 11198331
    Abstract: A tyre comprises a tread portion comprising a first tread edge and a second tread edge, and the tread portion is provided with a plurality of oblique grooves. The plurality of the oblique grooves includes a first oblique groove and a second oblique groove. Each of the first oblique grooves and the second oblique grooves has an open end and a terminating end, and a first steeply-inclined portion positioned on a side of the open end, a second steeply-inclined portion positioned on a side of the terminating end, and a mildly-inclined portion positioned between them. The second steeply-inclined portion includes a part in which an angle thereof with respect to a tyre circumferential direction is gradually decreased as it goes toward the terminating end.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 14, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kazuki Higashiura
  • Patent number: 11192404
    Abstract: A tyre comprises a tread portion. The tread portion includes a shoulder main groove extending continuously in a zigzag manner in a tyre circumferential direction on a side of a tread edge, a plurality of middle lateral grooves each extending inwardly in a tyre axial direction from the shoulder main groove, and a plurality of middle blocks divided by the plurality of the middle lateral grooves. Each of the middle blocks has a ground contacting surface defined between a first edge and a second edge extending in the tyre circumferential direction. At least one of the middle blocks has a full sipe extending so as to connect between the first edge and the second edge and having at least one bent portion, and a semi-sipe extending linearly from the first edge or the second edge and terminating within the at least one of the middle blocks.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: December 7, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yasutaka Iwata
  • Patent number: 11179973
    Abstract: A tire comprises a tread portion 2. The tread portion 2 has a repeated pattern portion 7 in which a plurality of minimum pattern constituent units 8 is arranged in a tire circumferential direction. Each of the minimum pattern constituent units 8 includes a center block 10, a plurality of surrounding blocks 11 surrounding the center block 10, and dividing grooves 15 each arranged between adjacent ones of the plurality of the surrounding blocks 11. The dividing grooves 15 include first dividing grooves 16 and second dividing grooves 17 inclined in opposite directions to each other.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: November 23, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroaki Ninomiya
  • Patent number: 11167594
    Abstract: A tire includes a carcass ply, a tread disposed radially outward of a crown region of the carcass ply, and a belt structure having an overall axial width substantially equal to a tread width interposed between the tread and the crown region in circumferential surrounding relation to the carcass ply. The belt structure includes a first belt layer and a second belt layer radially adjacent the first belt layer. The first belt layer includes a first reinforced composite with first reinforcement cords embedded in a first rubber matrix. The first reinforcement cords have a construction of 1100/4 dtex with a twist between 150 TPM and 250 TPM and a dipping tension between 100 mN/tex and 200 mN/tex.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 9, 2021
    Assignees: The Goodyear Tire & Rubber Company, Teijin Aramid B.V.
    Inventors: Ceyhan Celik, James Gregory Gillick, Robert Edward Lionetti, Michel Henricus Jacobus van den Tweel, Tony Mathew
  • Patent number: 11167596
    Abstract: The tire comprises a tread portion whose position when mounted on a vehicle is specified and having an asymmetric pattern with respect to a tire equator. The tread portion includes an outer shoulder main groove, an outer crown main groove, an inner crown main groove, an outer crown land region, and a center crown land region. The outer crown land region is provided with first outer crown sipes and second outer crown sipes. The center crown land region is provided with first center crown sipes and second center crown sipes. Each of the second outer crown sipes is arranged so as to be smoothly continuous with a respective one of the first center crown sipes with the outer crown main groove therebetween.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 9, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Masashi Wakasugi, Yuzo Kawasaki, Takahiro Kawanoue
  • Patent number: 11167597
    Abstract: A tire 1 comprises a tread portion 2 provided with a plurality of blocks 5 arranged therein. The blocks 5 include at least one first block 20 comprising a first part 6 arranged on one side in a tire circumferential direction and a second part 7 arranged on the other side in the tire circumferential direction. The first part 6 extends in the tire circumferential direction with a substantially constant width (Wa) in a tire axial direction. The second part 7 has a width (Wb) in the tire axial direction larger than that of the first part 6 so that the second part 7 protrudes axially outwardly from the first part 6 so as to protrude more toward one side in the tire axial direction.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 9, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Shoichi Wada
  • Patent number: 11161374
    Abstract: A car tyre having a tread that extends in axial direction for a width the tread including a central portion arranged across an equatorial plane, and two lateral portions opposed with respect to the central portion. The central portion is separated from the lateral portions of the tread by two circumferential grooves. The circumferential grooves have a width greater than about 6 mm. The central portion extends in axial direction for a width less than 20% of the width of the tread and includes a plurality of first sipes. Each lateral portion has a width greater than 30% of the width of the tread, and each lateral portion includes, furthermore, a plurality of transversal grooves. The transversal grooves of a lateral portion include at least a first inclined length that extends from a zone proximal to the respective circumferential grooves, moving away from the equatorial plane. The first inclined length has an inclination ??60° with respect to equatorial plane. Each lateral portion includes a plurality of sipes.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 2, 2021
    Assignee: PIRELLI TYRE S.p.A.
    Inventors: Alessandro Ascanelli, Roberto Bolzoni, Anna Paola Fioravanti, Stefano Montesello
  • Patent number: 11148471
    Abstract: In a pneumatic tire are defined: a first imaginary line VL1 passing through a ground contact surface in a meridian cross section of a tread portion, a second imaginary line VL2 passing through a bottom portion of a shoulder main groove and parallel to VL1, an intersection point between VL2 and a surface of a shoulder land portion outward of a ground contact edge T in a lateral direction, and an equatorial plane CL. Given A as a distance in the lateral direction between an intersection point P and CL, B as a groove depth of the shoulder main groove, and C as a distance in the lateral direction between T and CL, 0.80?(B+C)/A?1.15 is satisfied and, given E as a distance in the lateral direction between the bottom portion of the shoulder main groove and P, 2.0?E/B?5.0 is satisfied.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: October 19, 2021
    Inventor: Hiroyuki Sato
  • Patent number: 11142025
    Abstract: A pneumatic tire comprises circumferential main grooves extending in the tire circumferential direction and land portions defined by the circumferential main grooves. The land portions are each provided with a plurality of groove units which are sets including a first groove, a second groove, and a third groove. The first groove, the second groove, the third groove are disposed without meeting one another, and radially extend at intervals from each other ranging from 90 degrees to 150 degrees. Additionally, the first groove is a lug groove with the groove width ranging from 1.5 mm to 4.0 mm and has a semi-closed structure, opening to the circumferential main groove or the tire ground contact edge at a first end portion and terminating within the land portion at a second end portion.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: October 12, 2021
    Inventor: Yoshifumi Koishikawa
  • Patent number: 11135879
    Abstract: A pneumatic tire comprises at least four main grooves extending in the tire circumferential direction on the tread surface, circumferential land portions and shoulder land portions partitioned and formed by these main grooves, and designation of a mounting direction with respect to a vehicle, wherein a plurality of lug grooves is formed at intervals in the tire circumferential direction in each of the plurality of circumferential land portions, extending in the tire width direction, communicating with the main groove on the vehicle inner side, not communicating with the main groove on the vehicle outer side, and terminating within the circumferential land portion.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: October 5, 2021
    Inventor: Yoshifumi Koishikawa
  • 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