Abstract: A method for determining a sidewall toughness index for a tire includes providing a first tire that includes a pair of sidewalls. A first physical test is conducted on a selected one of the sidewalls of the first tire, and a result of the first test is recorded. A second tire of the same type as the first tire is provided, and includes a pair of sidewalls. A second physical test is conducted on a selected one of the sidewalls of the second tire, and a result of the second test is recorded. The result of each of the first physical test and the second physical test is normalized. A sidewall toughness index is generated by combining the normalized result of the first physical test and the normalized result of the second physical test.
Type:
Grant
Filed:
August 25, 2021
Date of Patent:
October 10, 2023
Assignee:
The Goodyear Tire & Rubber Company
Inventors:
Michael Thomas Driscoll, Steven Emery Guba, Jr., Nicholas Anthony Gullatta
Abstract: An improved extruder apparatus is disclosed and which includes a cylindrical barrel having a feed end and a discharge end, the feed end having an inlet in fluid communication with a hopper. The extruder screw is mounted in the cylindrical barrel, and the screw has an outer surface having one or more helical flights mounted thereon, wherein the inlet end of the cylindrical barrel has a support frame mounted thereto, wherein an upper surface of the support frame is connected to a throat of a hopper, wherein an insert is mounted to the support frame and has a lower end which extends down into the cylindrical barrel, wherein the insert has an internal passageway having a first opening on the lower end and a second opening upstream of the screw for relieving the pressure.
Type:
Grant
Filed:
March 18, 2021
Date of Patent:
October 10, 2023
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
Inventors:
Hongbing Chen, Christopher David Dyrlund, Joshua Aaron Phillipson, Jared Allen Vanasdale
Abstract: It has been discovered that certain monofunctional thiuram compounds can be synthesized at low cost and utilized as vulcanization accelerators which provide excellent cure rates without causing a high level of scorch. The use of these monofunctional thiuram compounds as vulcanization accelerators also result in cured rubber compositions that exhibit reduced compression set, improved age hardening characteristics, and degradation resistant crosslinks. These monofunctional thiuram compounds are of the structural formula: wherein R1 and R2 can be the same or different and represent organyl radicals, wherein R1 and R2 contain a total of at least 8 carbon atoms, and wherein R1 and R2 can join together to form a cyclic structure, and wherein R3 represents an organyl radical containing at least 6 carbon atoms.
Type:
Grant
Filed:
February 19, 2021
Date of Patent:
October 3, 2023
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
Inventors:
Thomas Franklin Spilker, Frank J. Feher
Abstract: A system for detection of non-pneumatic tire loading includes a non-pneumatic tire. The non-pneumatic tire includes a ground-contacting annular tread, a central rim, and at least one spoke disk disposed between the rim and the tread. The spoke disk includes an inner ring mounted on the central rim, an outer ring, and spokes extending radially between the inner ring and the outer ring. A shear band is disposed between the outer ring of the spoke disk and the tread. A flange is disposed on an outboard surface of the spokes of the spoke disk. Indicating means are formed on the outboard surface of the plurality of spokes of the spoke disk radially outwardly of the flange. The flange interfaces with the indicating means when the tire is in an overloaded state or is in need of replacement.
Type:
Grant
Filed:
October 6, 2020
Date of Patent:
October 3, 2023
Assignee:
The Goodyear Tire & Rubber Company
Inventors:
Wesley Glenn Sigler, Joseph Carmine Lettieri
Abstract: A method for estimating the load of a tire supporting a vehicle includes providing the tire, in which the tire includes a pair of sidewalls extending to a circumferential tread, and the tread includes a plurality of tread blocks. A length of the tire footprint is indicated with a first time interval, and a full rotation of the tire is indicated with a second time interval. The first time interval may be indicated by peaks of an amplitude of a tire-based magnetic sensor signal, and the second time interval may be indicated by peaks of the amplitude of the tire-based magnetic sensor signal or by a linear speed of the vehicle. The load on the tire is determined from a ratio of the first time interval to the second time interval at an inflation pressure of the tire. A tire load estimation system is also provided.
Abstract: The compatibility between silica fillers and synthetic rubbers which are synthesized utilizing lanthanide-based catalyst systems, such as neodymium catalyst systems can be improved by terminating the polymerization with a vinyl silane terminating agent. In doing so the vinyl silane is allowed to react with the polymer chain ends of the neodymium rubber to functionalize the chain ends of the polymer chains with silicon containing groups. This results in the rubber having better characteristics for utilization in tire rubber formulations, such a tire tread formulations, that exhibit improved wear characteristics and lower rolling resistance. The process for the synthesis of such functionalized polydiene rubber comprises (1) polymerizing a diene monomer in the presence of a lanthanide-based catalyst system, and (2) terminating the polymerization with a vinyl silane terminator.
Type:
Grant
Filed:
September 17, 2020
Date of Patent:
September 26, 2023
Assignee:
The Goodyear Tire & Rubber Company
Inventors:
Seth Cody Ensign, Margaret Flook Vielhaber, Jena Lynn Johngrass, Liqing Ma
Abstract: A guayule rubber processing system and method involves mixing a guayule rubber and at least one solvent blend in an extruder, in order to remove resin found in the guayule miscella and to precipitate the guayule miscella to form a precipitate. The at least one solvent blend has a first solvent configured to precipitate the guayule rubber, and a second solvent configured to swell the resulting precipitate. In particular, a series of the solvent blends may be used at different locations along a length of the extruder and may further include distinct blends of the first solvent and the second solvent, introduced at the different locations, and having different ratios of the first solvent and the second solvent.
Abstract: This invention is based upon the unexpected discovery that silica containing tire tread rubber performance characteristics, such as hysteresis and payne effect, can be significantly improved using low levels of coupling agents and increasing silanization times and temperatures. The rubbers formulations made in accordance with this finding are of particular value for use in the treads of winter tires. Such rubber formulations will typically be made using a maximum level of about 7 phf of silica coupling agent and will more typically contain 3 phf to 6 phf of the silica coupling. A silanization time of at least 4 minutes or 5 minutes (within the range of 4 to 10 minutes) at a temperature of at least 150° C. and preferably 160° C. (within the range of 150° C. to 180° C.) will also be used.
Type:
Grant
Filed:
December 13, 2021
Date of Patent:
September 26, 2023
Assignee:
The Goodyear Tire & Rubber Company
Inventors:
George Jim Papakonstantopoulos, Brad Stephen Gulas, Bruce Raymond Hahn
Abstract: In accordance with the invention, a textile cord coat composition for a tire comprises from 70 to 90 phr cis 1,4-polyisoprene rubber, from 10 to 30 phr styrene butadiene rubber, from 25 to 45 phr carbon black, the latter comprising between 1 and 6 phr high surface area carbon black having a BET surface area of more than 700 m2/g. Moreover, the invention is directed to a textile reinforced ply and a tire comprising such a textile cord coat composition.
Type:
Grant
Filed:
June 15, 2020
Date of Patent:
September 5, 2023
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
Inventors:
Adrian Osvaldo Balaguer Pino, Julia Martine Francoise Claudine Tahon
Inventors:
Suraj Sadananda, Philippe Jean-Marie Coton, Patrick Francois Willems, Nicolas Venet, Jerome Marcel Germain Delu, Armand Rene Gabriel Leconte