Patents by Inventor Paolo Straffi
Paolo Straffi 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: 20230347610Abstract: A method and system for applying a sealing agent to a surface (2) of an inner cavity (3) of a pneumatic tyre; the method provides for detecting the weight of the pneumatic tyre (4) before and after the application of the sealing agent to the surface (2); calculating the difference between the quantity of sealing agent applied to the surface (2) and a reference quantity of sealing agent, storing said difference within a short-term memory buffer (24) and a long-term memory buffer (26); determining a short-term compensation factor (KST) and a long-term compensation factor (KLT) and calculating a correction factor (KEA) using alternately the short-term compensation factor (KST) or else the long-term compensation factor (KLT); and using said correction factor (KEA) to actuate an applicator device (7) during the subsequent step of applying the strip of sealing agent to the surface (2).Type: ApplicationFiled: March 26, 2021Publication date: November 2, 2023Inventors: Roberto Pontone, Paolo Straffi
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Publication number: 20230271394Abstract: Method and application unit (3) for applying a sound-absorbing material (2) to an inner cavity of a pneumatic tyre (1) using a strip (4) of sound-absorbing material (2) provided on one side with an adhesive layer (6) covered with a protective lining (7). The following steps are provided: attaching an initial part of the protective lining (7) to a recovery drum (26); partially winding the strip of sound-absorbing material onto the applicator roller (24); pressing, by means of the applicator roller (24), the strip (4) of sound-absorbing material (2) against the inner cavity of the pneumatic tyre (1) whilst the pneumatic tyre (1) is caused to rotate; and rotating the recovery drum (26) synchronously with the pneumatic tyre (1), such as to wind the protective lining (7) around the recovery drum (26), step-by-step, as the protective lining (7) is separated from the strip (4) of sound-absorbing material (2).Type: ApplicationFiled: June 25, 2021Publication date: August 31, 2023Inventors: Alessio Ciarnella, Paolo Straffi
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Publication number: 20230234311Abstract: Method and application unit (3) for applying a sound-absorbing material (2) to an inner cavity of a pneumatic tyre (1). The following steps are provided: eliminating an excess end (5) of a strip (4) of sound-absorbing material (2); progressively separating a protective lining (7) from an adhesive layer (6) of the strip (4) as the strip (4) of sound-absorbing material (2) is applied to the inner cavity of the tyre; implementing by means of the strip (4) a separation opening (8) that starts from an opposite side of the protective lining (7) and ends at the protective lining (7) which remains intact, and separating the excess end (5) from the remaining part of the strip (4) of sound-absorbing material (2); and pulling the excess end (5) in relation to the remaining part of the strip such as to separate the protective lining (7) from the strip (4).Type: ApplicationFiled: June 25, 2021Publication date: July 27, 2023Inventors: Alessio Ciarnella, Paolo Straffi
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Publication number: 20220388200Abstract: A method and an apparatus (1) for the production of a compound used for the manufacture of an article made from rubber or a pneumatic tyre by means of a continuous mixer (2) divided into a mixing section (MS) wherein the mixing of the components of the compound being processed exclusively takes place; a reaction section (RS) located downstream of the mixing section (MS) wherein a mild reaction of the compound being processed is activated; wherein, the reaction section (RS) is provided with heating means for increasing the temperature of the compound being processed in relation to the temperature of the compound being processed within the mixing section (MS); and a cooling section (CS) located downstream of the reaction section (RS) and provided with means for the cooling of the compound being processed down to a temperature that will inhibit further development of the reaction that takes place within the reaction section (RS).Type: ApplicationFiled: November 9, 2020Publication date: December 8, 2022Inventors: Paolo Straffi, Fabrizio Baroncini, Giuseppe Pezzullo
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Publication number: 20200391549Abstract: A compound for the preparation of rubber products comprising a cross-linkable unsaturated chain polymer base, a reinforcing filler and a vulcanization system. The vulcanization system comprises at least sulfur, one or more vulcanization accelerants and a vulcanization activator consisting of halogenated graphite.Type: ApplicationFiled: October 24, 2018Publication date: December 17, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Paolo STRAFFI, Giancarlo COSSU, Maria Cecilia PALUMBI, Roberto COMPARELLI
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Patent number: 8748663Abstract: Use of compounds of molecular formula (I) as curing activators of mixes having a cross-linkable unsaturated-chain polymer base: ([R1R2R3NR5(NR4R6R7)n](n+1)+)y(n+1)Xy? (I); where: X is an anionic atom or group; R1, R2 and R3, which may be the same or different, are each CmH2m+1, where m ranges between 1 and 3, or CH2CHCH2 or CHCHCH3; R4, R6 and R7, which may be the same or different, are each CH2CHCH2 or CHCHCH3; n is 0 or 1; y is 1 when n is 1; y is 1 or 2 when n is 0; R5 is an aliphatic group C15-C22 when n is 0; and is an aliphatic group C8-C16 when n is 1; when n is 0, at least one of R1, R2, R3 and R5 comprises a double bond.Type: GrantFiled: October 7, 2010Date of Patent: June 10, 2014Assignee: Bridgestone CorporationInventors: Salvatore Cotugno, Paolo Straffi, Barbara Secchi
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Publication number: 20130012649Abstract: A method of producing impermeable rubber layers, the method including:—a step of preparing a water-based emulsion having at least a cross-linkable polymer base, and a surface-active agent of molecular formula (I) (R1CONR2CHR3COO?)n Xn+ where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, X is a metal cation, preferably an alkaline cation, and n is an integer of 1 to 3; and—a step of depositing the water-based emulsion on a surface.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore COTUGNO, Paolo STRAFFI
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Publication number: 20120298273Abstract: A method of producing impermeable rubber layers, the method including:—a step of preparing a water-based emulsion having at least a cross-linkable polymer base, and a surface-active agent of molecular formula (I) (R1CONR2CHR3—COO?)nXn+ where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, X is a metal cation, preferably an alkaline cation, and n is an integer of 1 to 3; and—a step of depositing the water-based emulsion on a surface.Type: ApplicationFiled: December 9, 2010Publication date: November 29, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore Cotugno, Paolo Straffi
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Publication number: 20120301687Abstract: A method of producing coloured portions on a tyre, the method including the steps of: producing a highly impermeable protective layer by depositing a water-based emulsion on a tyre part to be coloured; and applying a water-based paint to the protective layer. The water-based emulsion has at least a cross- linkable polymer base, and a surface-active agent of molecular formula (I) (R1CONR2CHR3COO?)n Xn+(I) where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, X is a metal cation, preferably an alkaline cation, and n is an integer of 1 to 3.Type: ApplicationFiled: December 9, 2010Publication date: November 29, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore Cotugno, Jose Antonio Silicani, Paolo Straffi
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Publication number: 20120259140Abstract: Use of compounds of molecular formula (I) as curing activators of mixes having a cross-linkable unsaturated-chain polymer base: ([R1R2R3NR5(NR4R6R7)n](n+1)+)y (n+1)Xy? (I); where: X is an anionic atom or group; R1, R2 and R3, which may be the same or different, are each CmH2m+1, where m ranges between 1 and 3, or CH2CHCH2 or CHCHCH3; R4, R6 and R7, which may be the same or different, are each CH2CHCH2 or CHCHCH3; n is 0 or 1; y is 1 when n is 1; y is 1 or 2 when n is 0; R5 is an aliphatic group C15-C22 when n is 0; and is an aliphatic group C8-C16 when n is 1; when n is 0, at least one of R1, R2, R3 and R5 comprises a double bond.Type: ApplicationFiled: October 7, 2010Publication date: October 11, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore Cotugno, Paolo Straffi, Barbara Secchi
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Publication number: 20120232201Abstract: A polymer tyre coating made from a water emulsion comprising at least a cross-linkable polymer base, curing agents, and a surface-active agent of molecular formula (I) (R1CONR2CHR3COO?)n Xn+ (I) where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, X is a metal cation, and n is an integer of 1 to 3.Type: ApplicationFiled: September 21, 2010Publication date: September 13, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore Cotugno, Paolo Straffi
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Publication number: 20120220732Abstract: Use of compounds of molecular formula (I) as curing activators of mixes including a cross-linkable, unsaturated-chain polymer base; (R1CONR2CHR3COO?)n Xn+ (I) where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, X is a metal cation, and n is an integer from 1 to 3.Type: ApplicationFiled: August 9, 2010Publication date: August 30, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Salvatore Cotugno, Paolo Straffi, Barbara Secchi
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Patent number: 6536597Abstract: A method and device whereby green tire components are on-line controlled as to quality, dimensions and structure by means of electric resistance measurements.Type: GrantFiled: September 6, 2000Date of Patent: March 25, 2003Assignee: Bridgestone CorporationInventors: Maurizio Farné, Paolo Straffi
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Patent number: 6523585Abstract: An antistatic tire having a tread made from a first mix (MP1) and having two annular shoulders and a peripheral rolling surface, two opposite annular portions of the rolling surface being defined by outer annular surfaces of the shoulders. Each shoulder is made from a second mix (MPC), which is electrically conducting, and which, under low strain, has substantially the same rigidity as the first mix (MP1), and, under high strain, has a greater rigidity than the first mix (MP1). In a second embodiment, an electrically conducting element is inserted inside the tread. The conducting element and the shoulders both being made of an electrically conducting third mix, which, under low strain and in the cured state, has the same mechanical characteristics as the first mix in the cured state, and, under high strain, has the same mechanical characteristics as the second mix in the cured state.Type: GrantFiled: June 28, 2000Date of Patent: February 25, 2003Assignee: Bridgestone CorporationInventors: Stefano Ducci, Yochiro Kondo, Paolo Straffi, Jose Silicani
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Patent number: 6183581Abstract: An antistatic tire and relative production method, whereby a portion of a tread made of an electrically insulating mix is hollowed out and filled with a cement (C) in the form of a carbon black mix in a volatile liquid; the carbon black mix being left inside the hollow portion when the volatile liquid evaporates, and defining inside the tread at least one conducting body communicating with a rolling surface of the tire.Type: GrantFiled: March 17, 1998Date of Patent: February 6, 2001Assignee: Bridgestone CorporationnInventors: Stefano Ducci, Yochiro Kondo, Paolo Straffi, José Silicani