High modulus low hysteresis rubber compound for pneumatic tires

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5494958
SERIAL NO

08469140

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A sulfur-vulcanizable rubber compound, being devoid of peroxide components, having high modulus and low hysteresis properties subsequent to vulcanization. Such compounds comprise from about 25 to 55 parts by weight of polyisoprene; and from about 75 to 45 parts by weight of a diene polymer selected from the group consisting of homopolymers of conjugated diene monomers and copolymers thereof with monoolefin monomers and EPDM terpolymers to total 100 parts by weight of rubber polymer; from about 50 to 70 parts by weight of a reinforcing filler, per 100 parts by weight wherein at least a portion of at least one of the rubber polymers is grafted with a polymeric metal salt of an .alpha., .beta.-ethylenically unsaturated carboxylic acid to form an uncured graft rubber copolymer and at least about 4 parts by weight of a curative selected from the group consisting of sulfur and sulfur donors, per 100 parts by weight of rubber. Pneumatic tires and structural components therefor are manufactured from rubber compounds having high modulus, low hysteresis and high compressive flex fatigue and provide run flat operation.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BRIDGESTONE CORPORATIONTOKYO2736

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Freeman, Roy M Akron, OH 3 146
Hergenrother, William L Akron, OH 210 1857
Ravagnani, Frederick J Uniontown, OH 13 214

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SUMITOMO RUBBER INDUSTRIES, LTD. (3)
* 5115021 Pneumatic tires 5 1989
* 5145536 Radial tire which runs safe after a loss of tire pressure 19 1991
* 5151139 Heavy duty radial tire having durable buttress portion 5 1991
 
The Yokohama Rubber Co., Ltd. (2)
* 5131445 Run-flat pneumatic radial tire 19 1990
* 5158627 Run flat pneumatic radial tire 18 1991
 
TOYO TIRE & RUBBER CO., LTD. (1)
* 5088537 Radial tire with a sidewall having a three-layer structure 13 1989
 
BRIDGESTONE CORPORATION (3)
* 4779658 Pneumatic safety tire 26 1987
* 4824899 Rubber compositions for bead filler 13 1987
* 4917164 Pneumatic safety tire 29 1988
 
CONTINENTAL AKTIENGESELLSCHAFT (1)
* 4287929 Pneumatic vehicle tire 17 1980
 
BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE, LLC (5)
* 4465829 Elastomeric composition comprising natural rubber for use under dynamic, high heat conditions 8 1983
* 4500466 Method for preparing a zinc dimethacrylate powder having a specific surface area range 28 1983
* 4529770 Vulcanizable polymeric compositions containing zinc dimethacrylate and fillers 14 1983
* 4495326 Rubber compounds containing zinc dimethacrylate 16 1984
* 4929684 Stiff sidewalls for pneumatic tires 12 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
GREINER BIO-ONE GMBH (1)
* 2004/0217,046 Holding device, particularly for body fluids, comprising a separating device, and a separating device therefor 1 2003
 
THE KOREA DEVELOPMENT BANK (2)
6508968 Low compression, resilient golf balls including an inorganic sulfide catalyst and methods for making the same 11 2000
* 2003/0096,915 Thin-layer-covered golf ball with improved velocity 0 2002
 
EXXONMOBIL CHEMICAL PATENTS INC. (2)
* 2006/0128,907 Process for making a thermoplastic vulcanizates 3 2003
* 2005/0032,981 Thermoplastic vulcaninates for run-flat tires 2 2004
 
ACUSHNET COMPANY (27)
* 6162135 Low compression, resilient golf balls including an inorganic sulfide catalyst and methods for making the same 104 1999
6291592 Low compression, resilient golf balls including aromatic catalyst and method for making same 84 1999
6465578 Low compression, resilient golf balls including an organosulfur catalyst and method for making same 56 1999
6458895 Low compression, resilient golf balls including elemental catalyst and method for making same 44 1999
6417278 Low compression, resilient golf balls including a cis-to-trans catalyst and method for making same 28 2000
6749789 Method of forming a multilayer golf ball with a thin thermoset outer layer 1 2000
6913547 Thin-layer-covered multilayer golf ball 10 2001
6849006 Thin, thermoset, polyurethane-covered golf ball with a dual core 18 2002
6634964 Initial velocity dual core golf ball 1 2002
6818705 Thin-layer-covered golf ball with improved velocity 25 2002
6960630 Thin, thermoset, polyurethane-covered golf ball with a dual core 7 2003
7041743 Thin-layer-covered golf ball with improved velocity 3 2003
7001954 Thin-layer-covered golf ball with improved velocity 2 2003
6992142 Thin-layer-covered golf ball with improved velocity 2 2003
* 2004/0106,469 Thin-layer-covered golf ball with improved velocity 4 2003
* 2004/0092,667 Thin-layer-covered golf ball with improved velocity 5 2003
7314587 Method of forming a multilayer golf ball with a thin thermoset outer layer 1 2004
* 2004/0227,269 Method of forming a multilayer golf ball with a thin thermoset outer layer 0 2004
7105610 Thin-layer-covered golf ball with improved velocity 3 2004
* 2004/0198,918 Thin-layer-covered golf ball with improved velocity 0 2004
* 2005/0070,377 Thin-layer-covered multilayer golf ball 1 2004
7446150 Low compression, resilient golf balls with rubber core 2 2005
7271222 Thin-layer-covered golf ball with improved velocity 3 2006
* 2006/0205,535 Thin-Layer-Covered Multi-Layer Golf Ball 0 2006
7531603 Thin-layer-covered golf ball with improved velocity 1 2007
8093337 Thin-layer-covered golf ball with improved velocity 0 2009
* 2009/0215,553 THIN-LAYER-COVERED GOLF BALL WITH IMPROVED VELOCITY 0 2009
 
BRIDGESTONE CORPORATION (7)
* 6009923 Pneumatic tire with air retention innerliner ply 3 1997
7723440 Functionalized polymers and improved vulcanizates therefrom 1 2003
* 2006/0074,197 Functionalized polymers and improved vulcanizates therefrom 6 2003
* 9174499 Pneumatic tire 0 2008
* 2010/0038,001 PNEUMATIC TIRE 3 2008
8207275 Functionalized polymers and improved vulcanizates therefrom 0 2010
* 2010/0298,465 FUNCTIONALIZED POLYMERS AND IMPROVED VULCANIZATES THEREFROM 0 2010
 
The Goodyear Tire & Rubber Company (2)
D413087 All terrain vehicle tread 4 1998
8672009 Pneumatic tire with dual layer sidewall 0 2008
 
BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE, LLC (3)
* 5769980 Pneumatic tire with sidewall inserts having specified extension underneath the belt package 9 1996
7255146 Apparatus and method of enhancing run-flat travel for pneumatic tires 3 2004
* 2006/0060,281 Apparatus and method of enhancing run-flat travel for pneumatic tires 0 2004
* Cited By Examiner