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公开(公告)号：US09610808B2
公开(公告)日：2017-04-04
申请号：US14346430
申请日：2012-09-27
Applicant: PIRELLI TYRE S.p.A
Inventor： Pierangelo Misani , Mario Mariani , Paolo Brivio , Silvio Montanari
CPC classification number: B60C11/033 , B60C11/0302 , B60C11/0304 , B60C19/001 , B60C2011/0358 , B60C2011/0374 , B60C2011/0381 , B60C2200/10
Abstract: Tire for motorcycles, having a tread band includes a central annular portion symmetrically located astride an equatorial plane and two shoulder annular portions located on axially opposite sides with respect to the central annular portion. The tread band has a void-to-rubber ratio not greater than 25%. The central annular portion has an axial extension not greater than 65% of the axial development of the tread band and the central portion has at least one module circumferentially repeated. Each shoulder portion has an axial extension not greater than 40% of the axial development of the tread band and the module includes at least one pair of first grooves with substantially circumferential course, at least partially located on opposite sides with respect to the equatorial plane. The central annular portion has a void-to-rubber ratio not smaller than 10% and the module includes a plurality of second grooves located substantially transversally with respect to the equatorial plane. The substantially transverse second grooves define in each module together with said first grooves at least two tread band solid portions. The second grooves have at least one end spaced away from the adjacent first groove by a distance so as to form a substantially continuous tread portion adapted to connect at least two tread band solid portions.
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公开(公告)号：US20140230978A1
公开(公告)日：2014-08-21
申请号：US14346430
申请日：2012-09-27
Applicant: PIRELLI TYRE S.p.A
Inventor： Pierangelo Misani , Mario Mariani , Paolo Brivio , Silvio Montanari
IPC: B60C11/03
CPC classification number: B60C11/033 , B60C11/0302 , B60C11/0304 , B60C19/001 , B60C2011/0358 , B60C2011/0374 , B60C2011/0381 , B60C2200/10
Abstract: Tyre for motorcycles, having a tread band includes a central annular portion symmetrically located astride an equatorial plane and two shoulder annular portions located on axially opposite sides with respect to the central annular portion. The tread band has a void-to-rubber ratio not greater than 25%. The central annular portion has an axial extension not greater than 65% of the axial development of the tread band and the central portion has at least one module circumferentially repeated. Each shoulder portion has an axial extension not greater than 40% of the axial development of the tread band and the module includes at least one pair of first grooves with substantially circumferential course, at least partially located on opposite sides with respect to the equatorial plane. The central annular portion has a void-to-rubber ratio not smaller than 10% and the module includes a plurality of second grooves located substantially transversally with respect to the equatorial plane. The substantially transverse second grooves define in each module together with said first grooves at least two tread band solid portions. The second grooves have at least one end spaced away from the adjacent first groove by a distance so as to form a substantially continuous tread portion adapted to connect at least two tread band solid portions.
Abstract translation: 具有胎面带的摩托车轮胎包括跨越赤道平面对称定位的中心环形部分和位于相对于中心环形部分的轴向相对侧上的两个肩部环形部分。 胎面带的空隙与橡胶比不大于25％。 中心环形部分具有不大于胎面带的轴向展开的65％的轴向延伸，并且中心部分具有周向重复的至少一个模块。 每个肩部具有不大于胎面带的轴向展开的40％的轴向延伸，并且该模块包括至少一对基本上圆周方向的至少部分地相对于赤道平面位于相对侧上的第一槽。 中心环形部分具有不小于10％的空隙与橡胶比，并且模块包括相对于赤道平面大致横向定位的多个第二槽。 基本上横向的第二凹槽在每个模块中与所述第一凹槽一起限定至少两个胎面带固体部分。 第二凹槽具有与相邻的第一凹槽隔开一段距离的至少一个端部，以形成适于连接至少两个胎面带固体部分的基本上连续的胎面部分。
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公开(公告)号：US11090891B2
公开(公告)日：2021-08-17
申请号：US16806130
申请日：2020-03-02
Applicant: Pirelli Tyre S.p.A.
Inventor： Silvio Montanari , Maurizio Marchini , Oliver Haupt , Mario Mariani , Davide Lupo Conti
Abstract: A toroidal forming drum and a process for building tyres. The toroidal forming drum (23) is expanded within a shaped carcass sleeve (12), for supporting the carcass sleeve (12) against an abutment surface (“S”) externally provided by the forming drum (23). An elementary semi-finished product (54a, 54b) is applied around the shaped carcass sleeve (12), by pressing the elementary semi-finished product (54a, 54b) towards the abutment surface (“S”). The abutment surface (“S”) has circumferential rows of solid portions (40) alternated with hollow portions (41). The solid portions (40), arranged along axially opposite circumferential edges of the abutment surface (“S”), have a transverse size comprised between 10% and 60% of a transverse size presented by the solid portions (40) arranged in proximity to an axial centreline plane of the abutment surface (“S”).
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公开(公告)号：US10960624B2
公开(公告)日：2021-03-30
申请号：US15312379
申请日：2015-04-30
Applicant: PIRELLI TYRE S.P.A.
Inventor： Maurizio Marchini , Mario Mariani , Silvio Montanari , Oliver Haupt
Abstract: A process and an apparatus for building tyres, wherein, in the process, a carcass sleeve including at least one carcass ply and a pair of annular anchoring structures is transferred to a shaping drum including flange elements that are each engageable with one of said annular anchoring structures. The carcass sleeve is shaped according to a toroidal configuration. Before shaping, annular grip elements respectively carried by the flange elements are radially expanded, each inside one of the annular anchoring structures, in order to engage the carcass sleeve. The annular anchoring structures are moved axially apart from each other before engaging the carcass sleeve by the annular grip elements.
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公开(公告)号：US11701851B2
公开(公告)日：2023-07-18
申请号：US17549380
申请日：2021-12-13
Applicant: PIRELLI TYRE S.P.A.
Inventor： Oliver Haupt , Maurizio Marchini , Silvio Montanari , Mario Mariani , Davide Lupo Conti
CPC classification number: B29D30/36 , B29D30/1621 , B29D30/1628 , B29D30/247 , B29D30/08 , B29D30/24 , B29D30/244 , B29D30/245 , B29D2030/265 , B29D2030/2642 , B29D2030/2657
Abstract: A carcass sleeve is situated in a radially external position with respect to a toroidal forming drum, arranged in a first radially contracted operative condition. The carcass sleeve is shaped according to a toroidal configuration while the forming drum is positioned inside the carcass sleeve. During shaping of the carcass sleeve, the forming drum is radially expanded up to a second radially expanded operative condition. Upon completed shaping, the carcass sleeve is coupled to the forming drum in the second operative condition. The forming drum, coupled to the shaped carcass sleeve, is arranged in proximity to at least one device for building at least one belt layer at a radially external position relative to the shaped carcass sleeve.
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公开(公告)号：US11697261B2
公开(公告)日：2023-07-11
申请号：US17183325
申请日：2021-02-23
Applicant: Pirelli Tyre S.p.A.
Inventor： Maurizio Marchini , Mario Mariani , Silvio Montanari , Oliver Haupt
CPC classification number: B29D30/1614 , B29D30/245 , B29D30/32 , B29D30/36 , B29D2030/1664 , B29D2030/3214
Abstract: A process and an apparatus for building tyres, wherein, in the process, a carcass sleeve including at least one carcass ply and a pair of annular anchoring structures is transferred to a shaping drum including flange elements that are each engageable with one of said annular anchoring structures. The carcass sleeve is shaped according to a toroidal configuration. Before shaping, annular grip elements respectively carried by the flange elements are radially expanded, each inside one of the annular anchoring structures, in order to engage the carcass sleeve. The annular anchoring structures are moved axially apart from each other before engaging the carcass sleeve by the annular grip elements.
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公开(公告)号：US11230075B2
公开(公告)日：2022-01-25
申请号：US16836545
申请日：2020-03-31
Applicant: PIRELLI TYRE S.P.A.
Inventor： Oliver Haupt , Maurizio Marchini , Silvio Montanari , Mario Mariani , Davide Lupo Conti
Abstract: A carcass sleeve is situated in a radially external position with respect to a toroidal forming drum, arranged in a first radially contracted operative condition. The carcass sleeve is shaped according to a toroidal configuration while the forming drum is positioned inside the carcass sleeve. During shaping of the carcass sleeve, the forming drum is radially expanded up to a second radially expanded operative condition. Upon completed shaping, the carcass sleeve is coupled to the forming drum in the second operative condition. The forming drum, coupled to the shaped carcass sleeve, is arranged in proximity to at least one device for building at least one belt layer at a radially external position relative to the shaped carcass sleeve.
