Patents by Inventor Richard M. Scriver
Richard M. Scriver 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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Patent number: 5307850Abstract: The subject invention discloses a pneumatic rubber tire comprised of a toroidal shaped fabric-reinforced rubber carcass and an outer circumferential rubber tread, two spaced substantially inextensible beads and two sidewalls extending radially from and connecting said tread to said beads, said tire characterized by having a circumferential fabric reinforced rubber belt positioned between said tread and supporting carcass where the rubber of said belt is comprised of (A) from about 25 to about 75 weight percent of a highly dispersed blend of syndiotactic 1,2-polybutadiene in synthetic polyisoprene, (B) from about 25 to about 75 weight percent natural rubber, and (C) from 0 to about 40 weight percent polydiene rubbers other than natural rubber. The present invention also reveals the utilization of syndiotactic 1,2-polybutadiene containing rubber compounds in and around the edges of the belt plies as a gum layer and in undertread gum layers.Type: GrantFiled: May 6, 1991Date of Patent: May 3, 1994Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel F. Halasa, Wen-Liang Hsu, Richard M. Scriver
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Patent number: 5253691Abstract: Reinforced rubber composite and article made therefrom, wherein the reinforcement preferably comprises cords of brass-coated steel and the rubber of the composite or article is a vulcanizate of a blend comprising (A) about 5-100 phr of a graft copolymer comprising a lower alkyl acrylate or lower alkyl methacrylate and a diene rubber or mixture thereof and (B) about 0-95 phr of at least one additional diene rubber or mixture thereof. The overall alkyl acrylate or alkyl methacrylate content of the blend is about 2-10 phr, preferably about 3-8 phr. A preferred article is a tire having a load bearing fabric-reinforced component, e.g. a reinforcing belt (22) wherein the fabric comprises cords of brass-coated steel and the rubber of the component has the composition above specified.Type: GrantFiled: January 13, 1992Date of Patent: October 19, 1993Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard M. Scriver
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Patent number: 5219944Abstract: An all season tire tread rubber blend comprises about 30 to 50 parts per hundred low vinyl polybutadiene; about 25 to 60 parts per hundred natural rubber and/or synthetic polyisoprene; and about 10 to 25 parts per hundred high styrene styrene/butadiene rubber and/or other diene polymer having a glass transition temperature of about -5.degree. to about -20.degree. C. A preferred embodiment comprises about 40 parts per hundred low vinyl solution polybutadiene, about 40 parts per hundred natural rubber, and about 20 parts per hundred high styrene solution styrene/butadiene. Tires employing the tire tread rubber of this invention exhibit improved wet and winter traction and superior abrasion resistance and treadwear without increased rolling resistance.Type: GrantFiled: July 10, 1991Date of Patent: June 15, 1993Assignee: Pirelli Armstrong Tire CorporationInventors: Richard M. Scriver, Tomasz S. Mroczkowski, Shailesh D. Patkar
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Patent number: 4894420Abstract: A pneumatic tire with tread composed of a sulfur cured rubber comprised of, based on the rubber, (A) cis 1,4-polyisoprene, (B) at least one of isoprene/acrylonitrile rubber and butadiene/acrylonitrile rubber and, optionally, (C) at least one additional rubber.Type: GrantFiled: September 14, 1988Date of Patent: January 16, 1990Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard M. Scriver
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Patent number: 4871004Abstract: Aramid-reinforced elastomers, including rubber, in which the elastomer is reinforced with aramid in the form of short, discontinuous, fibrillated fibers, are disclosed. The fibers are composed of a trunk portion having a length of about 0.2-5 mm, a diameter of about 0.005-0.02 mm (5-20 micrometers), and an aspect ratio greater than 100, and numerous fibrils extending outwardly from the trunk and having diameters substantially smaller than the trunk diameter. The surface area of the fibers is from about 4 to about 20 square meters per gram, and is about 30 to 60 times the equivalent surface area of fibers in the form of rod having the same diameter distribution as that of the trunks of the fibers herein, but with no fibrils. The fibers are oriented. Incorporation of the fibers results in substantial increase in stiffness and modulus. Loading of aramid fibers is typically about 0.2-20 phr.Type: GrantFiled: February 17, 1988Date of Patent: October 3, 1989Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert J. Brown, Richard M. Scriver
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Patent number: 4705819Abstract: A process for preparing rubber compositions comprised of a (a) 100 parts rubber material including 65-100 parts of cis-polyisoprene and optionally at least one additional high unsaturation rubber, (b) 40-70 parts Carbon Black and (c) conventional vulcanization and processing additives.The composition is mixed in two consecutive stages, in the first stage all the carbon black is mixed with at least 50 parts of the cis-polyisoprene, and in the second stage the remaining polyisoprene and any optional additional rubber is added to the mix.This method of mixing material has been observed to produce a rubber composition having enhanced tear and adhesion properties as compared with conventional processes where the rubber is mixed with the carbon black in one mixing stage.Thus, the invention is also directed to the resulting rubber composition and to a composite of such composition containing a filament reinforcement.Type: GrantFiled: March 11, 1985Date of Patent: November 10, 1987Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard M. Scriver
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Patent number: 4530959Abstract: A pneumatic tire with a sulfur cured elastomeric tread composition comprised of medium vinyl polybutadiene cis 1,4-polyisoprene rubber and styrene/butadiene copolymer rubber.Type: GrantFiled: March 8, 1984Date of Patent: July 23, 1985Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert G. Armbruster, Richard M. Scriver
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Patent number: 4522970Abstract: A pneumatic tire with sulfur cured rubber tread composition containing a medium vinyl polybutadiene rubber and at least one rubber selected from cis 1,4-polyisoprene rubber, styrene/butadiene copolymer rubber and cis 1,3-polybutadiene rubber. The composition also contains both carbon black and clay reinforcement in conjunction with a 3,3'-bis(trimethoxysilylpropyl) polysulfide.Type: GrantFiled: June 25, 1984Date of Patent: June 11, 1985Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard M. Scriver, Wayne H. Stair
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Patent number: 4483381Abstract: Pneumatic tire having circumferential fabric-reinforced rubber belt positioned between its tread and carcass where the rubber of the belt is comprised of medium vinyl polybutadiene, cis 1,4-polyisoprene and optionally, cis 1,4-polybutadiene. The invention is particularly directed to such tire where the medium vinyl polybutadiene rubber of said belt is a copolymer of 1,3-butadiene and a small amount of divinyl benzene.Type: GrantFiled: March 7, 1983Date of Patent: November 20, 1984Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard M. Scriver
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Patent number: 4192366Abstract: A pneumatic rubber tire having a tread comprised of a blend of cis-1,4 polyisoprene rubber and a medium vinyl polybutadiene rubber cured with an excess of sulfur. Said tire has been found to be useful as an aircraft tire having tread of enhanced durability.Type: GrantFiled: February 22, 1978Date of Patent: March 11, 1980Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard M. Scriver, Jr., Waldemar A. Ross
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Patent number: 4124546Abstract: Improved green strength of elastomers made from monomers selected from the class consisting of at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 14 carbon atoms along with a diene having from 4 to 6 carbon atoms, and combinations thereof, is achieved by adding an amount of a polydimethylbutadiene compound to form a blend having a glass transition temperature of from about 0.degree. C to about -100.degree. C. The polydimethylbutadiene compound may be merely the homopolymer of dimetylbutadiene, the copolymer, the terpolymer or the tetrapolymer of dimethylbutadiene in various combinations with monomers such as butadiene, isoprene, piperylene, acrylonitrile, vinylidene chloride, vinyl pyridine, methacrylic acid and vinyl substituted aromatic compounds.Type: GrantFiled: June 3, 1976Date of Patent: November 7, 1978Assignee: The Goodyear Tire & Rubber CompanyInventors: Diego C. Rubio, Jr., Richard G. Bauer, Richard M. Scriver, Jr.