公开(公告)号：US12070974B2

公开(公告)日：2024-08-27

申请号：US17822256

申请日：2022-08-25

Applicant: PIRELLI TYRE S.P.A.

Inventor： Piero Losi

IPC: B29D30/08 ,  B29D30/06 ,  B60C3/06 ,  B60C11/03 ,  B60C13/00 ,  B60C19/00

CPC classification number: B60C3/06 ,  B29D30/0601 ,  B29D30/08 ,  B60C11/0332 ,  B60C13/00 ,  B60C19/001 ,  Y10T29/49494

Abstract: Method for controlling the symmetry of the footprint area of a tyre miming on a straight trajectory with camber angle different from zero, wherein the method comprises the steps: —reducing the contact pressure of the tyre (2) on the footprint area at an inner shoulder (in case of negative camber) or at an outer shoulder (in case of positive camber); —disposing any medium line (Im) of the tread band (9) placed in correspondence with the footprint area substantially parallel to the ground; the invention also defines a tyre and a wheel for motor-vehicles, wherein the medium line (Im) of the tread hand (9) and the rotation axis (X-X) of the tyre (2) form an angle (a) substantially equal in absolute value to the camber angle (β); the invention also encompasses a process for manufacturing such tyres, wherein a green tyre with symmetric outer profile is deformed during the vulcanising and moulding step until a predetermined angle (a) different from zero is formed between any medium line (Im) of the tread band (9) and the rotation axis (X-X) of the vulcanised tyre (2).

公开(公告)号：US20230202244A1

公开(公告)日：2023-06-29

申请号：US17999654

申请日：2021-05-11

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masahiro NARUSE ,  Yuki NAGAHASHI

IPC: B60C19/00 ,  B60C13/00

CPC classification number: B60C19/00 ,  B60C13/00

Abstract: Provided is a pneumatic tire that can provide improved communication performance of a transponder while ensuring durability of the tire. In a pneumatic tire including a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions respectively disposed on both sides of the tread portion, and a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction, a transponder is embedded in one of the sidewall portions, the transponder is covered with a coating layer, a relative dielectric constant of the coating layer is lower than a relative dielectric constant of a peripheral rubber member adjacent to the coating layer, and a total thickness Gac of the coating layer and a maximum thickness Gar of the transponder satisfy a relationship 1.1≤Gac/Gar≤3.0.

公开(公告)号：US20190232730A1

公开(公告)日：2019-08-01

申请号：US16338231

申请日：2017-06-19

Applicant: BRIDGESTONE CORPORATION

Inventor： Naohiro HAYASHI

IPC: B60C13/02

CPC classification number: B60C13/02 ,  B60C13/00

Abstract: A tire capable of showing a sufficient cooling effect on a tire side portion when a vehicle travels at a low speed. A pneumatic tire includes a projection group in a tire side portion. A gap is formed between a first projection and a second projection. A size of the gap in a tire radial direction is smaller than a size of each of the first projection and the second projection in the tire radial direction.

公开(公告)号：US20180354314A1

公开(公告)日：2018-12-13

申请号：US15778621

申请日：2015-11-25

Applicant: The Yokohama Rubber Co., LTD. ,  Kumho Tire Co., Inc.

Inventor： Hiroshi Hata ,  Jun Matsuda ,  Kee Woon Kim ,  Chang Jung Park

IPC: B60C11/13 ,  B60C11/01 ,  B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1315 ,  B60C11/01 ,  B60C11/0306 ,  B60C11/1218 ,  B60C11/1259 ,  B60C13/00 ,  B60C15/0242 ,  B60C2011/0346 ,  B60C2011/0372 ,  B60C2011/129 ,  B60C2013/045

Abstract: A pneumatic tire, includes: a lug groove outermost in a lateral direction in a tread portion, the lug groove opening outward in the lateral direction; and a projection portion outward of an opening portion of the lug groove in the lateral direction, the projection portion extending outward in a radial direction past a groove bottom of the lug groove at maximum groove depth and including an end inward of a road contact surface of the tread portion in the radial direction, when the pneumatic tire is inflated to a regular internal pressure and loaded with 70% of a regular load; the projection portion including a body projecting from a tire surface, and an end projection extending from the end of the body with a step portion as an interface, and the end projection having a thinner meridian cross-sectional width than a meridian cross-sectional width of the end of the body.

公开(公告)号：US20180264884A1

公开(公告)日：2018-09-20

申请号：US15899809

申请日：2018-02-20

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Daisuke SATO

IPC: B60C1/00 ,  C08L9/00 ,  C08L7/00 ,  C08B15/02 ,  C08J3/22 ,  B60C13/00

CPC classification number: B60C1/0025 ,  B60C1/00 ,  B60C1/0016 ,  B60C5/14 ,  B60C9/12 ,  B60C11/005 ,  B60C13/00 ,  B60C2011/0025 ,  B60C2011/145 ,  B60C2013/006 ,  B60C2013/007 ,  C08B15/02 ,  C08J3/215 ,  C08J3/22 ,  C08J2307/02 ,  C08J2323/22 ,  C08J2401/04 ,  C08J2407/02 ,  C08J2423/22 ,  C08K7/04 ,  C08K2201/004 ,  C08L7/00 ,  C08L9/00 ,  C08K3/04 ,  C08K7/02 ,  C08L7/02

Abstract: The present invention provides a pneumatic tire having excellent fuel efficiency, handling stability, and ride quality while maintaining a good balance between them. Provided is a pneumatic tire including a tire component formed from a rubber composition, the rubber composition having cured rubber properties satisfying predetermined values.

公开(公告)号：US20180244112A1

公开(公告)日：2018-08-30

申请号：US15553962

申请日：2016-02-24

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Tomoyuki Sakai ,  Hidekazu Onoi

IPC: B60C13/00 ,  B60C1/00 ,  C08L9/00 ,  C08J9/00 ,  C08J9/10 ,  C09K5/14

CPC classification number: B60C13/00 ,  B60C1/00 ,  B60C1/0025 ,  B60C2013/005 ,  B60C2013/006 ,  B60C2013/045 ,  C08J9/0061 ,  C08J9/0066 ,  C08J9/101 ,  C08J9/102 ,  C08J9/107 ,  C08J2201/026 ,  C08J2203/04 ,  C08J2307/00 ,  C08J2309/00 ,  C08J2407/00 ,  C08K3/04 ,  C08K5/23 ,  C08K5/32 ,  C08L7/00 ,  C08L9/00 ,  C08L23/12 ,  C08L25/06 ,  C08L101/00 ,  C08L2205/03 ,  C09K5/14 ,  Y02T10/862

Abstract: Provided is a pneumatic tire which comprises a pair of left and right bead portions, sidewall portions continuous from the bead portions, and a tread portion that couples the sidewall portions. The pneumatic tire has a carcass layer mounted between the left and right bead portions. The sidewall portions each have a foamed rubber layer disposed outside the carcass layer and a side rubber layer disposed outside the foamed rubber layer. The density of the foamed rubber layer is from 0.5 to 0.9 g/cm3 and a tan δ of the foamed rubber layer at 20° C. is not greater than 0.17. A rubber composition for sidewalls that forms the side rubber layer is obtained by blending from 1 to 20 parts by weight of a thermoplastic resin and from 10 to 65 parts by weight of a carbon black in 100 parts by weight of a diene rubber.

公开(公告)号：US20180086156A1

公开(公告)日：2018-03-29

申请号：US15573444

申请日：2016-05-09

Applicant: The Yokohama Rubber Co., LTD

Inventor： Yuji Kodama

IPC: B60C13/02 ,  B60C3/04

CPC classification number: B60C13/02 ,  B60C3/04 ,  B60C5/00 ,  B60C9/08 ,  B60C13/00

Abstract: A pneumatic tire comprises a plurality of protrusion portions extending along a tire side surface of a tire side portion in a direction that intersects a tire circumferential direction and a tire radial direction; the plurality of protrusion portions each including an intermediate portion in an extension direction that includes a highest position of projection height from the tire side surface, and tip portions on either side of the intermediate portion in the extension direction that include a lowest position of projection height from the tire side surface, at least the intermediate portion being only disposed inward of a tire maximum width position in the tire radial direction; and a ratio of a total width (SW) to an outer diameter (OD) satisfying the relationship SW/OD≦0.3.

公开(公告)号：US20180001703A1

公开(公告)日：2018-01-04

申请号：US15536769

申请日：2015-12-17

Applicant: Bridgestone Americas Tire Operations, LLC

Inventor： Craig BALNIS

IPC: B60C1/00 ,  B60C13/00 ,  C08L9/00 ,  C08L23/16

CPC classification number: B60C1/0025 ,  B60C13/00 ,  C08K5/005 ,  C08L9/00 ,  C08L23/16

Abstract: A tire sidewall comprising a vulcanized rubber and a polymeric organo silicon compound.

公开(公告)号：US09815974B2

公开(公告)日：2017-11-14

申请号：US15000120

申请日：2016-01-19

Applicant: LEHIGH TECHNOLOGIES, INC.

Inventor： Chad Aaron Jasiunas ,  Frank P. Papp ,  Charles T. Rosenmayer ,  Kedar D. Murthy

IPC: C08G63/00 ,  C08L9/06 ,  B60C1/00 ,  B29B17/02 ,  B29B17/04 ,  C08J11/04 ,  C08J11/06 ,  C08L21/00 ,  B60C9/02 ,  B60C13/00 ,  B60C15/00 ,  B65G15/32 ,  C08L7/00 ,  C08G63/02 ,  B29K9/06

CPC classification number: C08L9/06 ,  B29B17/02 ,  B29B17/0404 ,  B29K2009/06 ,  B60C1/0016 ,  B60C9/02 ,  B60C13/00 ,  B60C15/00 ,  B65G15/32 ,  C08J11/04 ,  C08J11/06 ,  C08J2321/00 ,  C08J2419/00 ,  C08L7/00 ,  C08L21/00 ,  Y02P20/143 ,  Y02W30/625 ,  Y02W30/70 ,  Y02W30/701 ,  C08L19/003 ,  C08L9/00

Abstract: This invention is based upon the discovery that micronized solution styrene-butadiene rubber from postconsumer sources can be included in rubber formulations without severely compromising abrasion resistance. The micronized solution styrene-butadiene rubber utilized in the rubber formulations of this invention can be made by cryogenic grinding postconsumer rubber products using conventional procedures. For instance, it can be made by cryogenically grinding a tire tread containing a high level of solution styrene-butadiene rubber. The micronized solution styrene-butadiene rubber can then be blending into desired virgin rubbers and cured without significantly compromising the abrasion resistance of the rubber formulation. The rubber formulation of this invention is comprised of a natural or synthetic rubber and from 1 weight percent to 30 weight percent of a micronized rubber composition containing at least 10 weight percent solution styrene-butadiene rubber and having a particle size of 40 mesh to 200 mesh.

公开(公告)号：US09809063B2

公开(公告)日：2017-11-07

申请号：US14613540

申请日：2015-02-04

Applicant: Bridgestone Americas Tire Operations, LLC

Inventor： Jason R. Barr ,  Samuel O. Givens ,  Robert W. Asper ,  Dennis W. Snyder

IPC: B60C3/00 ,  B60C13/00 ,  B60C11/03 ,  B60C9/02

CPC classification number: B60C13/00 ,  B60C3/00 ,  B60C3/04 ,  B60C9/02 ,  B60C9/0292 ,  B60C11/0311 ,  B60C11/0332 ,  B60C13/003 ,  B60C2013/005 ,  B60C2200/08 ,  Y10T152/10855

Abstract: A low compaction cantilevered tire construction is provided which is designed for use at relatively low inflation pressures and which has sidewalls with a relatively uniform bending resistance through the majority of the sidewall. When the tire is placed under high loads at low inflation pressures the sidewall deflects substantially radially and allows the tread portion of the tire to maintain its intended shape thus improving the contact area of the tire and providing a tire having a relatively high contact area and thus relatively low soil compaction for a given loading.