Patents by Inventor Raymond Stubblefield
Raymond Stubblefield has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210061006Abstract: A tire comprising a tire component formed from a cross-linkable rubber composition having a rubber component selected from the group consisting of natural rubber, a synthetic rubber and combinations thereof with between 50 phr and 80 phr of a silica reinforcement filler having a BET surface area of between 100 m2/g and 135 m2/g measured in accordance with ASTM D1993. The cross-linkable rubber composition further includes a silica coupling agent and a sulfur curing system comprising between 1 phr and 2 phr of sulfur and an accelerator in an amount to provide a ratio of the sulfur to the accelerator by weight of between 0.4 and 0.6.Type: ApplicationFiled: December 20, 2018Publication date: March 4, 2021Inventors: Olivier PIFFARD, Raymond STUBBLEFIELD, Elizabeth L HOTALING
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Patent number: 10759914Abstract: Rubber compositions and articles made such rubber compositions having at least 80 phr of a styrene-butadiene elastomer modified with a functional group that is capable of interacting with a silica reinforcing filler and having a glass transition temperature of between ?60° C. and less than ?40° C. The rubber compositions may also include an effective amount of a plasticizing system having a plasticizing resin and a plasticizing liquid, wherein the effective amount of the plasticizing system provides the rubber composition with a shear modulus G* measured at 60° C. of between 0.9 MPa and 1.5 MPa and a Tg of between ?35° C. and ?15°. The filler for the rubber compositions is silica and there is further a curing system.Type: GrantFiled: December 23, 2016Date of Patent: September 1, 2020Assignee: Compagnie Generale des Etablissements MichelinInventors: Raymond Stubblefield, Olivier Piffard
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Patent number: 10207540Abstract: A tire tread formed at least in part from a rubber composition that is based upon a cross-linkable rubber composition that may include between 50 phr and 90 phr of a first highly unsaturated elastomer being middle chain functionalized with an aminoalkoxysilane group and having a Tg of between ?108° C. and ?45° C. and between 10 phr and 50 phr of a second highly unsaturated elastomer being end-chain functionalized with a silanol group and having a Tg of between ?108° C. and ?10° C. The rubber composition may further include between 50 phr and 150 phr of a silica filler and a plasticizing system comprising between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25° C. and between 0 phr and 60 phr of a plasticizing liquid.Type: GrantFiled: October 27, 2014Date of Patent: February 19, 2019Assignee: Compagnie Generale des Etablissements MichelinInventors: Anthony Derbin Cato, Raymond Stubblefield, Xavier Saintigny, Olivier Piffard
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Publication number: 20190016178Abstract: Rubber compositions that are particularly suitable for the undertread for a tire tread, such rubber compositions including a functionalized polybutadiene rubber and a second rubber component such as a styrene butadiene copolymer, natural rubber, another polybutadiene or other diene rubber or combinations thereof. Such rubber compositions are reinforced with a carbon black reinforcing filler that may be characterized as a low-surface area, high structure carbon black having a nitrogen surface area of between 15 m2/g and 25 m2/g and a COAN of between 65 ml/100 g and 85 ml/100 g.Type: ApplicationFiled: December 29, 2016Publication date: January 17, 2019Inventors: Raymond STUBBLEFIELD, Olivier PIFFARD
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Publication number: 20190002653Abstract: Rubber compositions and articles made such rubber compositions having at least 80 phr of a styrene-butadiene elastomer modified with a functional group that is capable of interacting with a silica reinforcing filler and having a glass transition temperature of between ?60° C. and less than ?40° C. The rubber compositions may also include an effective amount of a plasticizing system having a plasticizing resin and a plasticizing liquid, wherein the effective amount of the plasticizing system provides the rubber composition with a shear modulus G* measured at 60° C. of between 0.9 MPa and 1.5 MPa and a Tg of between ?35° C. and ?15°. The filler for the rubber compositions is silica and there is further a curing system.Type: ApplicationFiled: December 23, 2016Publication date: January 3, 2019Inventors: Raymond STUBBLEFIELD, Olivier PIFFARD
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Publication number: 20160280007Abstract: A tire tread formed at least in part from a rubber composition that is based upon a cross-linkable rubber composition that may include between 50 phr and 90 phr of a first highly unsaturated elastomer being middle chain functionalized with an aminoalkoxysilane group and having a Tg of between ?108° C. and ?45° C. and between 10 phr and 50 phr of a second highly unsaturated elastomer being end-chain functionalized with a silanol group and having a Tg of between ?108° C. and ?10° C. The rubber composition may further include between 50 phr and 150 phr of a silica filler and a plasticizing system comprising between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25° C. and between 0 phr and 60 phr of a plasticizing liquid.Type: ApplicationFiled: October 27, 2014Publication date: September 29, 2016Inventors: Anthony Derbin Cato, Raymond Stubblefield, Xavier Saintigny, Olivier Piffard
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Publication number: 20150343843Abstract: A tread for a tire, the tread comprising a rubber composition that is based upon a cross-linkable elastomer composition, the cross-linkable elastomer composition comprising, per hundred parts by weight of rubber (phr), a high-Tg rubber being a highly unsaturated diene elastomer having a glass transition temperature of between ?30° C. and 0° C., a low-Tg rubber being a highly unsaturated diene elastomer having a glass transition temperature of between ?110° C. and ?60° C. The high-Tg and the low-Tg elastomers are incompatible and this provides, among other advantages, improved snow traction of the tread when compared to tire treads having lower Tg.Type: ApplicationFiled: December 20, 2013Publication date: December 3, 2015Inventors: Anthony Derbin CATO, Raymond STUBBLEFIELD, Xavier SAINTIGNY, Olivier PIFFARD
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Publication number: 20150283854Abstract: Treads and tires having such treads having improved characteristics breaking the compromise between Wear and wet braking, such treads manufactured from a rubber composition that may include greater than 90 phr of an elastomer component selected from styrene-butadiene rubber (SBR), a polybutadiene or combinations thereof having, a glass transition temperature of between ?100° C. and less than ?50° C. and a plasticizing system. The plasticizing system may include, for example, between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25° C. and between 0 phr and 60 phr of a plasticizing liquid. Particular embodiments may include the elastomer component having a Tg of between ?90° C. and ?60° C. and/or may further have the elastomer component included in an amount of at least 95 phr.Type: ApplicationFiled: September 14, 2011Publication date: October 8, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Xavier Saintigny, Raymond Stubblefield
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Publication number: 20150087745Abstract: Rubber articles, including tires and tire treads, that are manufactured from a rubber composition that includes a functionalized styrene-butadiene rubber (SBR) and a polybutadiene rubber, wherein the functionalized SBR includes a functional group attached as an active moiety and wherein the butadiene portion of the SBR has as trans-1,4 content of between 30 wt. % and 70 wt. %. The rubber composition further includes a plasticizing system having a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid, wherein the plasticizing system is added in an effective amount to provide the rubber composition with a glass transition temperature of between ?25° C. and ?15° C. and with a dynamic modulus G* at 60° C. of between 0.8 MPa and 1.3 MPa. The rubber composition is reinforced with a silica filler.Type: ApplicationFiled: March 30, 2012Publication date: March 26, 2015Inventors: Yuri A Chekanov, Raymond Stubblefield
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Publication number: 20140371346Abstract: Treads and tires having such treads having improved characteristics that break the compromise between wet/dry traction and wear. Such treads may comprise a rubber composition based upon a cross-linkable elastomer composition having a highly unsaturated diene elastomer and between 100 phr and 160 phr of an inorganic reinforcing filler. Embodiments may further include an effective amount of a plasticizing system that includes a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid. The effective amount of the plasticizer system may be between 60 phr and 130 phr for particular embodiments and is effective in the amount for providing the rubber composition with a shear modulus G* measured at 60° C. of between 0.4 MPa and 1 MPa, Particular embodiments may further include the rubber composition forming the tire tread, to have a glass transition temperature of between ?30° C. and 0° C.Type: ApplicationFiled: September 14, 2011Publication date: December 18, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Xavier Saintigny, Raymond Stubblefield
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Publication number: 20140347377Abstract: A global composition system is described. In one or more implementations, the global composition system may be configured to perform rendering for a plurality of applications. For example, the global composition system may be configured to expose one or more application programming interfaces (APIs) that are accessible to the applications. The APIs may then be used to cause a single composition engine to perform the rendering for the plurality of applications. The use of a single composition engine may be used to support a variety of different functionality, such as to perform efficient rendering by knowing what elements are provided by each of the applications and how those items relate for rendering to a display device.Type: ApplicationFiled: September 14, 2012Publication date: November 27, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Raymond Stubblefield, Xavier Saintigny, William Marshall Thompson, Elizabeth L. Hotaling
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Publication number: 20140251519Abstract: Tire treads having one or more repeating pitches, each repeating pitch comprising individual pitches having tread blocks with sipes formed therein and each pitch having a pitch length of between 15 mm and 35 mm. Such treads may also have a weighted average sipe density Dw of between 10 mm?1 and 37 mm?1, which is determined through the disclosed Eq. 2 below. The tread blocks are also formed from a rubber composition based upon a diene elastomer, a plasticizing system and a cross-linking system, wherein the rubber composition has a glass transition temperature of between ?40° C. and ?15° C. and a shear modulus G* measured at 60° C. of between 0.5 MPa and 1.1 MPa.Type: ApplicationFiled: August 31, 2011Publication date: September 11, 2014Inventors: Olivier Piffard, Xavier Saintigny, Raymond Stubblefield, Cyril Guichon
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Publication number: 20130153100Abstract: The present invention provides a tire tread having a configuration and material properties that improve wet traction. In particular, the tread has a specified minimum threshold for chamfer density and a maximum level of complex shear modulus for the material that constitutes the tread in order to optimize the road friction coefficient (p) a tire tread experiences during a wet braking event. This results in better wet traction and a shorter stopping distance during the braking event.Type: ApplicationFiled: December 13, 2012Publication date: June 20, 2013Inventors: Olivier Piffard, Cyril Guichon, Xavier Saintigny, Raymond Stubblefield