Goodyear Patente

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A method of treating a cord for reinforcement is disclosed. The method comprises the steps of atomizing a mixture of at least one hydrocarbon sulfide, an organic solvent, and a carrier gas to form an atomized mixture; generating an atmospheric pressure plasma from the atomized mixture; and exposing the reinforcement cord to the atmospheric pressure plasma. Also, a reinforcement cord treated by this method and a reinforced rubber or reinforced elastomer article of manufacture comprising such a treated cord is disclosed.

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A self-inflating tire having a sidewall (24), a chafer, a groove (14) positioned within the sidewall (24) or the chafer, an air tube (16) positioned within the groove (14) in contacting engagement with opposite groove surfaces (28) at least partially surrounding the air tube (16), and a coverstrip (18) overlaying the groove (14) is disclosed. The coverstrip (18) comprises a rubber composition comprising from 50 to 80 phr of a polybutadiene, from 20 to 50 phr of natural rubber and from 0.1 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier.

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A method for estimating a tire state including normal force, lateral force, and longitudinal force on a tire mounted to a wheel and supporting a vehicle is disclosed. The method comprises: accessing a vehicle CAN-bus for vehicle sensor-measured information; equipping the vehicle with a plurality of CAN-bus accessible, vehicle mounted sensors providing by the CAN-bus input sensor data, the input sensor data including acceleration and one or more angular velocities, steering wheel angle measurement, angular wheel speed of the wheel, roll rate, pitch rate, and yaw rate; deploying a normal force estimator operable to estimate a normal force on the tire from a summation of longitudinal load transfer, lateral load transfer and static normal force using as inputs lateral acceleration, longitudinal acceleration and roll angle derived from the input sensor data; deploying a lateral force estimator operable to estimate a lateral force on the tire from a planar vehicle model using as inputs measured lateral acceleration, longitudinal acceleration and yaw rate derived from the input sensor data; and deploying a longitudinal force estimator operable to estimate a longitudinal force on the tire from a wheel rotational dynamics model using as inputs wheel angular speed and drive/brake torque derived from the input sensor data.

A tire state estimation system is provided for estimating normal force, lateral force and longitudinal forces based on CAN-bus accessible sensor inputs; the normal force estimator generating the normal force estimation from a summation of longitudinal load transfer, lateral load transfer and static normal force using as inputs lateral acceleration, longitudinal acceleration and roll angle derived from the input sensor data; the lateral force estimator estimating lateral force using as inputs measured lateral acceleration, longitudinal acceleration and yaw rate; and the longitudinal force estimator estimating the longitudinal force using as inputs wheel angular speed and drive/brake torque derived from the input sensor data.

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A tire wear state estimation system is disclosed comprising a tire supported by a wheel and supporting a vehicle; a vehicle-based sensor for measuring wheel speed of the wheel supporting the tire and generating a wheel speed signal; a feature-extracting processor for extracting from the wheel speed signal a first extracted feature; a feature-extracting processor for extracting from the wheel speed signal a second extracted feature; and a data classifier receiving as data inputs first extracted feature data and second extracted feature data; the data classifier operable to conduct a classification of the first extraction feature data relative to the second extraction feature data to estimate a wear state for the tire. Also, a method for estimating a tire state of a tire supported by a wheel and supporting a vehicle is disclosed. The method comprises utilizing a vehicle-based sensor for measuring a wheel speed of the wheel supporting the tire and generating a wheel speed signal; extracting a first extracted feature from the wheel speed signal, the first extracted feature operably changing with a change in the tire state; extracting a second feature from the wheel speed signal, the second feature operably changing with a change in the tire state; classifying data from the first extracted feature and data from the second extracted feature using a support vector data classification algorithm; and applying the algorithm to estimate the tire state.

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A tire having a tread region and first and second sidewalls extending from the tread region and an elongate tubular air passageway enclosed within a flexing region of a tire wall is disclosed. The air passageway comprises an air inlet portal and an outlet portal. The air passageway is configured to operably close segment by segment in reaction to induced forces from the tire flexing region as the flexing region of the tire wall rotates opposite a rolling tire footprint. The elongate air passageway comprises at least one check valve device seated within the axial air passageway dividing the elongate air passageway into a plurality of air passageway segments comprising an upstream air passageway segment and a downstream air passageway segment. The check valve device has an external dimension and configuration such that it is operable to substantially occupy the air passageway. The check valve device has a valve gate to allow pressurized air to directionally pass through the check valve body and to prohibit air from passing through the check valve body from the downstream air passageway segment to the upstream air passageway segment. A flow of pressurized air through the check valve device extends in one axial direction along the air passageway from an inlet portal of the elongate air passageway toward an outlet portal of the air passageway. Also, a method of assembling an air pump for a tire is disclosed.

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The present invention is directed to a copolymer of a monomer selected from the group consisting of 1,3-butadiene and isoprene, and a monomer of formula I wherein R 1 is phenylene, or a linear or branched alkane diyl group containing 2 to 10 carbon atoms, or a combination of one or more phenylene groups and one or more linear or branched alkane diyl groups containing 1 to 10 carbon atoms; R 2 and R 3 are independently phenyl or a linear or branched alkyl group containing 1 to 10 carbon atoms, or one of R 2 and R 3 is hydrogen and the other is phenyl or a linear or branched alkyl group containing 1 to 10 carbon atoms, or R 2 and R 3 taken together with the nitrogen atom represent a nitrogen containing heterocyclic group containing from 4 to 12 carbon atoms; and R 4 is hydrogen or a linear or branched alkyl group containing 1 to 10 carbon atoms. The invention is further directed to a rubber composition including the copolymer, and a pneumatic tire containing the rubber composition. The invention is further directed to a method of making such a copolymer.

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