Invention Grant
- Patent Title: Pneumatic tire and process for its manufacture
- Patent Title (中): 气动轮胎及其制造工艺
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Application No.: US10584798Application Date: 2003-12-30
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Publication No.: US08104523B2Publication Date: 2012-01-31
- Inventor: Piero Losi , Pierluigi De Cancellis , Gaetano Lo Presti , Rodolfo Noto , Claudio Lacagnina
- Applicant: Piero Losi , Pierluigi De Cancellis , Gaetano Lo Presti , Rodolfo Noto , Claudio Lacagnina
- Applicant Address: IT Milano
- Assignee: Pirelli Pneumatici S.p.A.
- Current Assignee: Pirelli Pneumatici S.p.A.
- Current Assignee Address: IT Milano
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- International Application: PCT/IT03/00867 WO 20031230
- International Announcement: WO2005/063509 WO 20050714
- Main IPC: B60C11/00
- IPC: B60C11/00 ; B60C11/03

Abstract:
A pneumatic tire has a carcass structure having at least one carcass ply and at least one annual reinforcing structure associated with the carcass ply, a tread band made of an elastomeric material at a radially outer position with respect to the carcass structure, a belt structure interposed between the carcass structure and the tread band and a pair of axially opposite side walls on the carcass structure, wherein the tread band has i) at least one first sector, radially extending, substantially of a first elastomeric material; ii) a plurality of second sectors radially extending, positioned at axially opposite sides of the at least one first sector and substantially of a second elastomeric material; iii) at least one longitudinal groove formed in the at least one first sector and extending substantially for the entire circumferential development of the tread band, wherein the first elastomeric material has a modulus of elasticity under compression at 23° C. greater than the modulus of elasticity under compression at 23° C. of the second elastomeric material, and wherein the modulus of elasticity under compression at 23° C. of the first elastomeric material is about 20 to about 80 MPa.
Public/Granted literature
- US20070187013A1 Pneumatic tire and process for its manufacture Public/Granted day:2007-08-16
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