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公开(公告)号：EP4438280A1
公开(公告)日：2024-10-02
申请号：EP24166663.5
申请日：2024-03-27
CPC分类号： B29C73/163 , B29C73/22 , B29L2030/0020130101 , B60C19/122
摘要： A sealant composition for use in a tire (22) is disclosed. The sealant composition comprises 100 phr of elastomers, said elastomers comprising at least 60 phr or at least 75 phr of an isobutylene-based elastomer component and at least 5 phr or at least 8 phr of a conjugated diene-based elastomer component; at least 5 phr of a particulate filler; and at least 0.5 phr of an organic peroxide. Also, a method of forming a sealant layer and a method of manufacturing a pneumatic rubber tire having a puncture sealing feature is disclosed. The method comprises: building an unvulcanized tire (22) comprising a circumferential rubber tread (28), a supporting carcass (24), a containment layer (26), and a sealant layer (27) disposed intermediate the supporting carcass (24) and the containment layer (26), the sealant layer (24) comprising said sealant composition; and curing the unvulcanized tire (22) at a sufficient temperature to depolymerize the isobutylene-based elastomer component, at least partially, and to produce the pneumatic rubber tire having the puncture sealing feature.
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公开(公告)号：EP4414161A1
公开(公告)日：2024-08-14
申请号：EP24155629.9
申请日：2024-02-02
发明人： LAMGADAY, Robin , BALDAN, Adam Mark , GARN, Benjamin Isaiah , PULFORD, Carl Trevor Ross , CHANDRA, Dinesh , LIN, Cheng-Hsiung
IPC分类号： B29D30/06
CPC分类号： B29D30/0681 , B29D2030/068220130101
摘要： A method of providing an air barrier layer to a tire is disclosed comprising at least the steps of: providing a tire comprising a tire cavity and an inner surface facing the tire cavity; providing a tubular film with at least one open end; and molding at least a portion of the tubular film to form an air barrier layer adapted to the inner surface of the tire. Also, a method of providing an air barrier layer to a tire is disclosed comprising at least the steps of: providing a tire comprising a tire cavity and an inner surface facing the tire cavity; providing a tubular film with two open ends; applying the tubular film onto an expandable curing bladder of a tire curing press; and expanding the curing bladder so as to expand the film applied onto the curing bladder in the tire cavity to form the air barrier layer adapted to the inner surface of the tire. Yet, a method of providing an air barrier layer to a tire is disclosed comprising at least the steps of: providing a cured tire comprising a tire cavity and an inner surface facing the tire cavity; extruding a tubular film of molten polymer; inserting the tubular film of molten polymer into the tire cavity of the cured tire; and expanding the tubular film in the tire cavity of the cured tire to form the air barrier layer adapted to the inner surface of the tire.
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公开(公告)号：EP4396284A1
公开(公告)日：2024-07-10
申请号：EP22797134.8
申请日：2022-08-25
发明人： CANTWELL, Kelsey, Elizabeth , FEHER, Frank, James , SPILKER, Thomas, Franklin , KULIG, Joseph, John
CPC分类号： C08L7/00 , C08L9/00 , C08L23/22 , C08C19/25 , B60C1/0016
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公开(公告)号：EP4385763A1
公开(公告)日：2024-06-19
申请号：EP23215355.1
申请日：2023-12-08
IPC分类号： B60C11/24
CPC分类号： B60C11/246
摘要： A system and method for estimating remaining mileage on a tire (12) supporting a vehicle (14) is disclosed. The system (10) comprises: a processor (28) in electronic communication with an electronic control system (30) of the vehicle (14); a calibration module (40) configured for determining a wear rate of the tire (12) and for communicating the wear rate of the tire (12) to the processor (28); a severity assessment module (42) in electronic communication with the processor (28), the severity assessment module being configured for receiving real-time inputs and generating a real-time driving severity number; and a mileage estimation module (44) in electronic communication with the processor (28), the mileage estimation module being configured for determining a current wear state of the tire (12) and for generating an estimate of remaining mileage on the tire from the wear rate of the tire, the real-time driving severity number, and the current wear state of the tire.
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公开(公告)号：EP4385762A1
公开(公告)日：2024-06-19
申请号：EP23214516.9
申请日：2023-12-06
发明人： SINGH, Kanwar Bharat , DA COSTA, Hélder Magalhães , LONGOBARDI, Armando , SAJADI ALAMDARI, Seyed Amin
IPC分类号： B60C11/24
CPC分类号： B60C11/246
摘要： A method and system for estimation of a depth of a tread of a tire supporting a vehicle is disclosed. The method comprises: providing a processor in electronic communication with an electronic control system of the vehicle; providing a wheel speed signal processing module in electronic communication with the processor, the wheel speed signal processing module receiving measured wheel speed signals and generating processed wheel speed signals from the measured wheel speed signals; providing a Fast Fourier Transform computation module in electronic communication with the processor, the Fast Fourier Transform computation module receiving the processed wheel speed signals and generating a Fast Fourier Transform curve; providing a summation module in electronic communication with the processor, the summation module selecting a predefined range of the Fast Fourier Transform curve, generating a reference curve from the predefined range of the Fast Fourier Transform curve, and determining a sum of residuals between a real-time Fast Fourier Transform curve and the reference curve; and providing a regression model in electronic communication with the processor, the regression model determining an estimate of tire tread depth from the sum of residuals.
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公开(公告)号：EP4382883A1
公开(公告)日：2024-06-12
申请号：EP23213834.7
申请日：2023-12-01
IPC分类号： G01M17/02
CPC分类号： G01M17/02
摘要： A computer implemented method for detecting hydroplaning of a tire supporting a vehicle is disclosed. The method comprises obtaining radial acceleration data from a tire-mounted sensor unit, wherein the radial acceleration data provides an indication of the evolution of the tire's radial acceleration while the tire is rolling on a ground surface; and generating a hydroplaning detection signal based on the radial acceleration data. Also, hydroplaning detection system is disclosed comprising a vehicle; a tire supporting the vehicle; a sensor unit being mounted on the tire, the sensor unit including a radial acceleration sensor to measure radial acceleration data while the tire is rolling on a ground surface; a memory element storing at least part of the acceleration data; and a processor in electronic communication with the sensor unit and with the memory element, the processor being configured to obtain radial acceleration data from the memory element, and to generate a hydroplaning detection signal based on the radial acceleration data.
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公开(公告)号：EP4382868A1
公开(公告)日：2024-06-12
申请号：EP23213825.5
申请日：2023-12-01
CPC分类号： G01C25/005 , G01C21/188
摘要： A system and method for real-time determination of calibration of an inertial measurement unit (18) is disclosed. The system (10) comprises an inertial measurement unit (18) mounted on at least one of a vehicle (14), a tire (12) and a wheel (16); a processor (36) in electronic communication with the inertial measurement unit; a road mapping module (44) in electronic communication with the processor for receiving a vehicle latitude and a vehicle longitude and for determining a virtual heading angle of the vehicle; a virtual acceleration module (56) in electronic communication with the processor for receiving the virtual heading angle of the vehicle from the road mapping module and for receiving a measured vehicle speed and a measured heading angle, the virtual acceleration module being configured for estimating a virtual lateral acceleration and a virtual longitudinal acceleration; a correlation module (62) in electronic communication with the processor for receiving the virtual lateral acceleration and the virtual longitudinal acceleration from the virtual acceleration module and for receiving a calibrated measured lateral acceleration and a calibrated measured longitudinal acceleration from the inertial measurement unit, the correlation module being further configured for determining a correlation between the virtual lateral acceleration and the calibrated measured lateral acceleration and between the virtual longitudinal acceleration and the calibrated measured longitudinal acceleration. The correlation module (62) is further configured for generating a notice (80) indicating a result of the correlation.
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公开(公告)号：EP4371785A1
公开(公告)日：2024-05-22
申请号：EP23209939.0
申请日：2023-11-14
发明人： UEYOKO, Kiyoshi , DAS, Badal
CPC分类号： B60C11/0332 , B60C9/005 , B60C9/04 , B60C9/2204 , B60C9/263 , B60C11/01 , B60C2011/01320130101 , B60C2200/0220130101 , B60C11/0083
摘要： A pneumatic tire (10) is disclosed comprising a carcass (22) and a belt structure (40). The belt structure (40) comprises a plurality of belt layers that include at least one spiral belt layer (60) and at least one zigzag belt layer (70). Each of the at least one spiral belt layers (60) has cords arranged at an angle of 5° or less with respect to an equatorial plane of the pneumatic tire (10) and each of the at least one zigzag belt layers (70) has cords arranged at an angle in a range of from of 2° to 40°, alternatively from 5° to 30°, with respect to the equatorial plane of the pneumatic tire (10) and extending in alternation to turnaround points at each lateral edge of the belt structure (40). A first belt layer of the plurality of belt layers located radially outward of the carcass (22) is one of the at least one spiral belt layers (60). The first belt layer has an axial width less than the axially widest belt layer of the plurality of belt layers. The pneumatic tire (10) further comprises a tread (20) comprising two or more main grooves (17a, 19a, 17b, 19b) extending circumferentially continuously around the pneumatic tire (10) and defining a plurality of ribs (25a, 23a, 21, 23b, 25b) that include an axially outermost rib (25a, 25b) on each lateral side of the tread (20). At 10% to 100% of the rated inflation pressure of the pneumatic tire (10) and no load, each of the two axially outermost ribs (25a, 25b) is radially raised in relation to a respective next nearest rib (23a, 23b) located axially inward of the respective axially outermost rib (25a, 25b).
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公开(公告)号：EP4368419A1
公开(公告)日：2024-05-15
申请号：EP23208402.0
申请日：2023-11-07
CPC分类号： B60C23/0416 , B60C23/064
摘要： An auto-location system and method for locating a position of a tire supporting a vehicle is disclosed. The system (10) comprises a tire sensor unit (26) including a footprint length measurement sensor to measure a length of a footprint of the tire, and electronic memory capacity to store identification information for the tire sensor unit (26); a vehicle sensor unit (34) for measuring a lateral acceleration (36) and a longitudinal acceleration (38) of the vehicle; a processor (40) in electronic communication with the tire sensor unit (26) and the vehicle sensor unit (34) for receiving the measured footprint length, the identification information, the lateral acceleration, and the longitudinal acceleration; a virtual footprint length estimator (52) for execution on the processor (40), the footprint length estimator employing the lateral acceleration and the longitudinal acceleration to estimate a virtual footprint length (60) of the tire; a correlation module (54) for execution on the processor (40), the correlation module receiving the virtual footprint length (60) and the measured footprint length to generate correlation values; and a decision arbitrator (56) for execution on the processor (40), the decision arbitrator applying a set of decision rules (84) to the correlation values to generate a wheel position indication (58) that correlates the tire sensor unit (26) to a position of the tire (12a, 12b, 12c, 12d) on the vehicle (14).
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公开(公告)号：EP4360864A1
公开(公告)日：2024-05-01
申请号：EP23206328.9
申请日：2023-10-27
发明人： MURRAY, Thomas Alan , CABRERA, Luis Antonio , BAIR, David Lee , MORA AZOCAR, Cristian Andre , ZHOU, Qina
CPC分类号： B29D30/58 , B29D30/3007 , B29D2030/08220130101 , B29D2030/308520130101 , B29D30/08 , B29D2030/306420130101 , G01N21/95
摘要： A method is disclosed comprising placing a tire building drum of a tire building machine in a position relative to a machine vision system, the machine vision system being configured to generate a three dimensional image of the tire building drum as a breaker or a green rubber tread is applied to the tire building drum. In a first aspect, the method comprises: setting a radius of the tire building drum to a known radius; and attaching a calibration fixture to the tire building drum, where a position of a plurality of surfaces of the calibration fixture are known relative to a bottom surface of the calibration fixture; obtaining an axial image trace across the calibration fixture attached to the tire building drum; and mapping, from the axial image trace, a position in an array column of individual ones of a plurality of pixels to corresponding radius values relative to a center of the tire building drum for the machine vision system to be used to generate a subsequent three dimensional image. In a second aspect, the method comprises: identifying at least one edge of the tire building drum in the three dimensional image, wherein a location of the at least one edge comprises a corresponding at least one calibrated edge position; and storing the at least one calibrated edge position of the tire building drum for verification of a position of the tire building drum. Furthermore, an apparatus for practicing this method is disclosed.
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