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公开(公告)号：US11890897B2
公开(公告)日：2024-02-06
申请号：US17042041
申请日：2019-03-26
发明人： Toyoaki Endo
CPC分类号： B60C11/0304 , B60C11/124 , B60C11/1204 , B60C11/1218 , B60C11/1236 , B60C11/13 , B60C11/1369 , B60C11/1376 , B60C2011/0367 , B60C2011/0383 , B60C2011/1245
摘要： A tread pattern of a pneumatic tire includes circumferential main grooves, a land portion defined by the circumferential main grooves in the lateral direction, and sipes at intervals in a circumferential direction, the sipes connecting the circumferential main grooves with each other. Each of the sipes has a peak-like shape protruding to a first side in the circumferential direction. When, in a profile cross-section of the tread portion taken along the lateral direction, an arc passing through two land portion edge points at which a tread surface of the land portion is connected with groove wall surfaces of the circumferential main grooves and having a center point positioned on the equator line is set to a standard profile line, a profile line formed by the tread surface of the land portion is a swelling profile line protruding outward of the standard profile line in a radial direction.
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公开(公告)号：US20190111736A1
公开(公告)日：2019-04-18
申请号：US16090146
申请日：2017-03-29
发明人： Takamasa Motomitsu
CPC分类号： B60C11/0306 , B60C2011/0346 , B60C2011/0348 , B60C2011/0351 , B60C2011/0353 , B60C2011/0355 , B60C2011/0358 , B60C2011/036 , B60C2011/0362 , B60C2011/0365 , B60C2011/0369 , B60C2011/0372 , B60C2011/0383 , B60C2200/065
摘要： A heavy duty pneumatic tire comprises a tread pattern that comprises: circumferential main grooves with a wave-like shape, shoulder lug grooves extending in the tire width direction to a ground contact edge and connecting to the circumferential main grooves at first groove turning portions that protrude outward; center lug grooves connecting to the circumferential main grooves at second groove turning portions that protrude inward; and center blocks defined by adjacent center lug grooves of the center lug grooves adjacent in the tire circumferential direction and the circumferential main grooves, forming a row in the tire circumferential direction. The center lug grooves and the circumferential main grooves have a narrower groove width than the shoulder lug grooves; and each region of the center blocks includes two first narrow grooves having a curved line shape with no bent portions and having a narrower groove width than the shoulder lug grooves.
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公开(公告)号：US20180194173A1
公开(公告)日：2018-07-12
申请号：US15742016
申请日：2016-05-31
发明人： Takashi Shibai
CPC分类号： B60C11/12 , B60C11/0302 , B60C11/0304 , B60C11/0306 , B60C11/0311 , B60C11/032 , B60C11/033 , B60C13/02 , B60C2011/0346 , B60C2011/0348 , B60C2011/0353 , B60C2011/0365 , B60C2011/0381 , B60C2011/0383 , B60C2011/0388 , B60C2011/1209 , B60C2011/1213
摘要： The pneumatic tire according to the present technology includes a tread portion, sidewall portions, and bead portions, and has a designated mounting direction on a vehicle. The pneumatic tire is provided, in the tread portion, with four main grooves including a pair of center main grooves extending in the tire circumferential direction and a pair of shoulder main grooves located outside the center main grooves and extending in the tire circumferential direction; these main grooves define five rows of land portions; the center main groove on the vehicle outer side has a zigzag shape in the tire circumferential direction; and a plurality of lug grooves extending from the main grooves, except the center main groove having a zigzag shape, toward both sides in the tire lateral direction and terminating in the land portions are provided in the tread portion.
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公开(公告)号：US20180126789A1
公开(公告)日：2018-05-10
申请号：US15803139
申请日：2017-11-03
CPC分类号： B60C11/0083 , B60C11/0302 , B60C11/032 , B60C11/033 , B60C2011/0339 , B60C2011/0383 , B60C2017/0081 , B60C2200/10
摘要： A tire includes a tread portion provided with a tread profile which is curved in an arcuate shape in a tire meridian section so that the tread portion includes a crown region contacting with the ground during straight running, and a pair of shoulder regions contacting with the ground during cornering by leaning the tire at a certain camber angle. The crown region has a land ratio of not less than 98%, and the shoulder regions have a land ratio of from 85% to 93%. A three-wheeled vehicle has a pair of front wheels and a single rear wheel on which the tire is mounted.
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公开(公告)号：US09950572B2
公开(公告)日：2018-04-24
申请号：US14229193
申请日：2014-03-28
发明人： Yoshiaki Takemoto
CPC分类号： B60C11/0304 , B60C11/12 , B60C11/1236 , B60C2011/0348 , B60C2011/0353 , B60C2011/0365 , B60C2011/0372 , B60C2011/0381 , B60C2011/0383 , B60C2011/0388 , B60C2011/039 , B60C2011/129 , B60C2011/1295
摘要： A pneumatic tire has a tread portion provided with an asymmetrical tread pattern and comprising an inboard shoulder land portion, an inboard shoulder main groove, an inboard middle land portion, an inboard crown main groove, a center land portion, an outboard crown main groove, an outboard middle land portion, an outboard shoulder main groove, and an outboard shoulder land portion. The inboard middle land portion is provided with inboard middle axial grooves extending from the inboard shoulder main groove and each comprising a main portion and a turnback portion. The inboard shoulder land portion is provided with inboard shoulder sipes extending from the inboard shoulder main groove.
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公开(公告)号：US09789733B2
公开(公告)日：2017-10-17
申请号：US14606152
申请日：2015-01-27
发明人： Takuya Sato , Hiroyuki Nakayama
CPC分类号： B60C11/03 , B60C11/0304 , B60C11/0306 , B60C11/12 , B60C11/1259 , B60C11/1272 , B60C11/1369 , B60C11/1392 , B60C2011/0341 , B60C2011/0344 , B60C2011/0348 , B60C2011/0369 , B60C2011/0372 , B60C2011/0374 , B60C2011/0381 , B60C2011/0383 , B60C2011/0386 , B60C2011/039 , B60C2011/0395
摘要： A pneumatic tire comprises a tread portion provided on each side of the tire equator with a middle land portion defined between a shoulder main groove and a crown main groove each extending continuously in the tire circumferential direction. The middle land portion is provided with axially inside middle lug grooves and axially outside middle lug grooves arranged alternately in the tire circumferential direction. The axially inside middle lug groove is connected to the crown main groove at an angle θ1 of from 20 to 45 degrees with respect to the tire circumferential direction and has an axially inner opened end and an axially outer closed end. The outside middle lug grooves is connected to the shoulder main groove at an angle θ2 of from 60 to 80 degrees with respect to the tire circumferential direction and has an axially outer open end and an axially inner closed end. The tread portion may be provided with a shoulder land portion comprising circumferential sipes, axial grooves terminating at the circumferential sipes, and a circumferentially continuous rib.
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公开(公告)号：US09757991B2
公开(公告)日：2017-09-12
申请号：US14170743
申请日：2014-02-03
发明人： Masao Tagashira , Hiroyuki Nakayama
CPC分类号： B60C11/1259 , B60C11/0304 , B60C11/0306 , B60C11/033 , B60C2011/0346 , B60C2011/0348 , B60C2011/0353 , B60C2011/0355 , B60C2011/0383 , B60C2011/0388 , B60C2011/1209 , B60C2011/1213
摘要： A pneumatic tire is provided in the tread portion with a central land portion between two crown main grooves. The central land portion is provided with notches each having a depth of 55% to 65% of the depth of the crown main groove and having a closed end and an open end opening to the crown main groove.The maximum axial length of the central notch is 10% to 15% of the maximum axial length of the central land portion, and the circumferential length of the opening is 10% to 15% of one circumferential pitch of the shoulder block row 7R.The circumferential length of the opening is 15% to 25% of one circumferential pitch of the central notches.
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公开(公告)号：US20170225518A1
公开(公告)日：2017-08-10
申请号：US15328427
申请日：2015-05-13
CPC分类号： B60C11/13 , B60C11/0311 , B60C11/11 , B60C11/1369 , B60C2011/0344 , B60C2011/0346 , B60C2011/0353 , B60C2011/0355 , B60C2011/0369 , B60C2011/0383 , B60C2200/065
摘要： A tread pattern is provided with: shoulder lug grooves open at ground contact ends; center lug grooves each having opposite ends; circumferential primary grooves each formed in a wavy shape by connecting ends of the center lug grooves and the inner ends of the shoulder lug grooves in the width direction of the tire; and center blocks defined by the center lug grooves and the pair of circumferential primary grooves. The width of the circumferential primary grooves is smaller than the width of the shoulder lug grooves. The center lug grooves are tilted relative to both the circumferential direction and the width direction of the tire and each have a third groove turning portion and a fourth groove turning portion which protrude in the different directions in the circumferential direction of the tire.
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公开(公告)号：US20170182849A1
公开(公告)日：2017-06-29
申请号：US15313532
申请日：2015-05-20
发明人： Yuta Uchida
CPC分类号： B60C11/042 , B60C11/03 , B60C11/0304 , B60C11/04 , B60C11/1376 , B60C11/1392 , B60C2011/0025 , B60C2011/013 , B60C2011/0341 , B60C2011/0383 , B60C2011/0388 , B60C2011/039
摘要： A pneumatic tire includes at least three circumferential grooves extending in the tire circumferential direction in the tread portion, and at least four ribs extending in the tire circumferential direction. In the pneumatic tire, at least two of the ribs including a rib disposed on a first side of the tire equatorial plane in the tire width direction and a rib disposed on a second side protrude to the outer side in the tire radial direction beyond a profile line of a tread surface when viewed in a meridian cross section. The protruding amount decreases in order from the first side to the second side in the tire width direction, and the loss tangent tan δ at 60° C. of the compound in a region where the rib has the least protruding amount is smaller than that in a region of the rib where the protruding amount is the greatest.
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公开(公告)号：US20170120688A1
公开(公告)日：2017-05-04
申请号：US15316104
申请日：2015-04-20
发明人： Takahisa Murata
CPC分类号： B60C11/1263 , B60C11/0302 , B60C11/0304 , B60C11/0306 , B60C11/12 , B60C11/1204 , B60C11/1236 , B60C11/1384 , B60C11/1392 , B60C2011/0341 , B60C2011/0358 , B60C2011/0362 , B60C2011/0369 , B60C2011/0374 , B60C2011/0381 , B60C2011/0383 , B60C2011/0388 , B60C2011/1213 , B60C2011/129
摘要： A pneumatic tire includes an inclined groove disposed in a first land portion and/or a second land portion which includes at least two bent portions. A sipe is disposed in the first land portion and/or the second land portion so as to intersect the inclined groove at 90°±30°. The sipe includes at least one bent portion.
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