Patents by Inventor Stefano Bizzi
Stefano Bizzi 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: 11912070Abstract: Tyre for vehicle wheels, comprising a tread band comprising circumferential grooves, circumferential ribs defined by said circumferential grooves and a plurality of sipes (10) that extend, on said circumferential ribs, from a radially outer surface of the tread band towards a radially inner portion of the tread band. Said sipes (10) extend along a predetermined trajectory and comprise, in any cross section perpendicular to said predetermined trajectory, a main portion (100) having a first radial dimension (H?) and a first transversal dimension (T, T?) substantially constant along a radial direction and, in a radially outer position with respect to said main portion (100), a top portion (110) extending up to said radially outer surface of the tread band and having, at said radially outer surface of the tread band, a second transversal dimension (W) greater than said first transversal dimension (T, T?).Type: GrantFiled: December 22, 2017Date of Patent: February 27, 2024Assignee: PIRELLI TYRE S.p.A.Inventors: Alfredo Balini, Stefano Bizzi
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Publication number: 20230286322Abstract: A car tyre (1), in particular a high or ultra high performance car tyre also suitable for use on track, is described. The tread band (8) of the tyre has a central region (L1) having a limited extension, separated from two large shoulder regions, respectively an outer shoulder region (L2) and inner shoulder region (L3). At least the outer shoulder region (L2) and the central region (L1) have a set, limited in type, number, size and extension, of transverse grooves. In the tread band (8) there are also annular portions (S1, S2, M) substantially lacking grooves such that the void-to-rubber ratio being zero.Type: ApplicationFiled: September 8, 2021Publication date: September 14, 2023Applicant: Pirelli Tyre S.p.A.Inventors: Roberto BOLZONI, Diego Ettore SPEZIARI, Andrea SCOTTI, Stefano BIZZI
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Publication number: 20220371367Abstract: The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising: —a) a plurality of metallic wires (11) twisted to one another with a single twisting pitch (P), or—b) a single metallic wire twisted with at least one second metallic wire with a single twisting pitch, or—c) a plurality of first metallic wires twisted to one another with a first twisting pitch to define a first strand of metallic wires and at least one second metallic wire twisted with said first strand of metallic wires with a second twisting pitch equal to or different from the first twisting pitch. The metallic reinforcing cord (10) has a part load elongation greater than or equal to 1%.Type: ApplicationFiled: December 16, 2020Publication date: November 24, 2022Applicant: Pirelli Tyre S.p.A.Inventors: Simone AGRESTI, Guido Luigi DAGHINI, Stefano BIZZI
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Publication number: 20210138837Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.Type: ApplicationFiled: January 20, 2021Publication date: May 13, 2021Inventors: Gianfranco COLOMBO, Roberto BOLZONI, Stefano BIZZI, Daniele LORENZETTI
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Patent number: 10933696Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.Type: GrantFiled: July 16, 2014Date of Patent: March 2, 2021Assignee: PIRELLI TYRE S.P.A.Inventors: Gianfranco Colombo, Roberto Bolzoni, Stefano Bizzi, Daniele Lorenzetti
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Publication number: 20190315161Abstract: Tyre for vehicle wheels, comprising a tread band comprising circumferential grooves, circumferential ribs defined by said circumferential grooves and a plurality of sipes (10) that extend, on said circumferential ribs, from a radially outer surface of the tread band towards a radially inner portion of the tread band. Said sipes (10) extend along a predetermined trajectory and comprise, in any cross section perpendicular to said predetermined trajectory, a main portion (100) having a first radial dimension (H?) and a first transversal dimension (T, T?) substantially constant along a radial direction and, in a radially outer position with respect to said main portion (100), a top portion (110) extending up to said radially outer surface of the tread band and having, at said radially outer surface of the tread band, a second transversal dimension (W) greater than said first transversal dimension (T, T?).Type: ApplicationFiled: December 22, 2017Publication date: October 17, 2019Applicant: PIRELLI TYRE S.p.A.Inventors: Alfredo BALINI, Stefano BIZZI
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Patent number: 9418418Abstract: The present invention refers to a method for calculating a shape factor indicative of the evenness of the pellucid zone thickness of a biological structure and to a method for evaluating the evenness of the pellucid zone thickness of a biological structure through said shape factor.Type: GrantFiled: May 17, 2013Date of Patent: August 16, 2016Assignee: ADVANCED COMPUTER SYSTEMS A.C.S. S.P.A.Inventors: Stefano Bizzi, Luca Galli
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Publication number: 20160193880Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.Type: ApplicationFiled: July 16, 2014Publication date: July 7, 2016Inventors: Gianfranco COLOMBO, Roberto BOLZONI, Stefano BIZZI, Daniele LORENZETTI
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Publication number: 20160176234Abstract: A tyre for wheels of vehicles, includes a belt structure including a radially outer circumferential belt layer of the belt structure including a plurality of hybrid reinforcement cords arranged according to a substantially zero angle with respect to the equatorial plane of the tyre, each of the hybrid reinforcement cords being formed by two aromatic polyamide fibre yarns and by a polyester and/or aliphatic polyamide fibre yarn wherein each of the aromatic polyamide fibre yarns has a linear density less than or equal to about 1500 dTex and an initial modulus equal to or greater than about 6000 cN/tex measured in accordance with the BISFA standard, testing methods for para-aramid fibre yarns, 2002 edition.Type: ApplicationFiled: July 14, 2014Publication date: June 23, 2016Applicant: PIRELLI TYRE S.P.A.Inventors: Barbara RAMPANA, Stefano BIZZI, Fiorenzo BRIVIO, Lisa GRASSI
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Patent number: 9346320Abstract: A tire includes a carcass, a belt structure, and a tread band. The belt structure includes at least two belt plies and at least one belt layer radially external to the belt plies. The at least one belt layer extends at least for an axial width of the at least two belt plies and includes at least one first elongated element and at least one second elongated element. The elongated elements form turns substantially oriented in a circumferential direction of the tire. The turns are alternately disposed along an axial development of the at least one belt layer. The at least one first elongated element is a hybrid cord including at least one high-elastic-modulus filament and at least one low-elastic-modulus filament that are twisted together. An elastic modulus of the at least one second elongated element is lower than an elastic modulus of the at least one first elongated element.Type: GrantFiled: June 19, 2003Date of Patent: May 24, 2016Assignee: PIRELLI PNEUMATICI S.P.A.Inventors: Cèline Almonacil, Stefano Bizzi, Maurizio Boiocchi, Guido Riva, Giancarlo Cucco
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Publication number: 20150036912Abstract: The present invention refers to a method for calculating a shape factor indicative of the evenness of the pellucid zone thickness of a biological structure and to a method for evaluating the evenness of the pellucid zone thickness of a biological structure through said shape factor.Type: ApplicationFiled: May 17, 2013Publication date: February 5, 2015Inventors: Stefano Bizzi, Luca Galli
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Patent number: 8746307Abstract: A pneumatic tire having a belt structure includes: a first belt layer; a second belt layer in a radially inner position with respect to the first belt layer, a third belt layer in a radially inner position with respect to the first and second belt layers, each belt layer including a plurality of elongated reinforcing elements disposed at a first, second and third belt angle respectively. The first and second belt angles have an absolute value of 15 to 40 degrees; the second angle is of opposite sign with respect to the first belt angle; and the third belt angle has an absolute value of 40 to 90 degrees and is of opposite sign with respect to the second belt angle. The belt structure also includes a zero degree belt layer placed in a radially outer position with repeat to the first belt layer including elongated reinforcing elements arranged such as to form a belt angle which is substantially zero.Type: GrantFiled: December 23, 2005Date of Patent: June 10, 2014Assignee: Pirelli Tyre S.p.A.Inventors: Guido Luigi Daghini, Stefano Bizzi
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Patent number: 8499806Abstract: A tire having (i) an asymmetric tread profile with a shoulder drop difference of 0.3 to 0.9; and (ii) an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio and the outer void/solid ratio of 1.1 to 1.50. By the above combination of features, handling and aquaplaning performance is remarkably improved even at high operating speeds without negatively affecting the wear resistance of the tread band.Type: GrantFiled: December 20, 2005Date of Patent: August 6, 2013Assignee: Pirelli Tyre S.p.A.Inventors: Stefano Bizzi, Maurizio Boiocchi, Giuseppe Matrascia, Dario Scaltritti
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Publication number: 20100294408Abstract: A tire having (i) an asymmetric tread profile with a shoulder drop difference of 0.3 to 0.9; and (ii) an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio and the outer void/solid ratio of 1.1 to 1.50. By the above combination of features, handling and aquaplaning performance is remarkably improved even at high operating speeds without negatively affecting the wear resistance of the tread band.Type: ApplicationFiled: December 20, 2005Publication date: November 25, 2010Inventors: Stefano Bizzi, Maurizio Boiocchi, Giuseppe Matrascia, Dario Scaltritti
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Publication number: 20100289232Abstract: A pneumatic tire having a belt structure includes: a first belt layer; a second belt layer in a radially inner position with respect to the first belt layer, a third belt layer in a radially inner position with respect to the first and second belt layers, each belt layer including a plurality of elongated reinforcing elements disposed at a first, second and third belt angle respectively. The first and second belt angles have an absolute value of 15 to 40 degrees; the second angle is of opposite sign with respect to the first belt angle; and the third belt angle has an absolute value of 40 to 90 degrees and is of opposite sign with respect to the second belt angle. The belt structure also includes a zero degree belt layer placed in a radially outer position with repeat to the first belt layer including elongated reinforcing elements arranged such as to form a belt angle which is substantially zero.Type: ApplicationFiled: December 23, 2005Publication date: November 18, 2010Applicant: PIRELLI TYRE S.p.A.Inventors: Guido Luigi Daghini, Stefano Bizzi
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Publication number: 20090194215Abstract: A tire includes a carcass structure including at least one carcass ply, the carcass structure including a crown portion and two axially opposite side portions terminating in beads for mounting the tire on a rim; a tread band; and a belt structure interposed between the carcass structure and the tread band. The bead includes a bead core. The bead core includes: at least one first elongated element including at least one metal wire, and at least one second elongated element including at least one carbon fiber. The bead core results in an increased bead, forcing an improved bead unseating resistance and a decreased weight.Type: ApplicationFiled: May 30, 2005Publication date: August 6, 2009Inventors: Guido Daghini, Celine Almonacil, Stefano Bizzi, Alessandro Susa
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Patent number: D797034Type: GrantFiled: January 16, 2014Date of Patent: September 12, 2017Assignee: Pirelli Tyre, S.p.A.Inventors: Gianfranco Colombo, Roberto Bolzoni, Stefano Bizzi, Daniele Lorenzetti
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Patent number: D861577Type: GrantFiled: April 28, 2017Date of Patent: October 1, 2019Assignee: PIRELLI TYRE S.P.A.Inventors: Gianfranco Colombo, Roberto Bolzoni, Stefano Bizzi, Daniele Lorenzetti
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Patent number: D934784Type: GrantFiled: June 11, 2019Date of Patent: November 2, 2021Assignee: PIRELLI TYRE S.p.A.Inventors: Diego Ettore Speziari, Stefano Montesello, Stefano Bizzi, Pier Luigi De Cancellis
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Patent number: D949775Type: GrantFiled: September 4, 2020Date of Patent: April 26, 2022Assignee: PIRELLI TYRE S.p.A.Inventors: Roberto Bolzoni, Diego Ettore Speziari, Andrea Scotti, Stefano Bizzi