Invention Application
- Patent Title: Low-running-temperature tyre
- Patent Title (中): 低运行温度轮胎
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Application No.: US10738132Application Date: 2003-12-18
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Publication No.: US20050034797A1Publication Date: 2005-02-17
- Inventor: Marco Nanni , Renato Caretta
- Applicant: Marco Nanni , Renato Caretta
- Assignee: PIRELLI COORDINAMENTO PNEUMATICI S.p.A.
- Current Assignee: PIRELLI COORDINAMENTO PNEUMATICI S.p.A.
- Priority: ITMI97A000584 19970314
- Main IPC: B29D30/06
- IPC: B29D30/06 ; B29K21/00 ; B29K503/04 ; B29K507/04 ; B60C1/00 ; B60C11/00 ; B60C11/02 ; B60C11/03 ; B60C11/18 ; B60C111/00 ; B60C115/00 ; B60C123/00

Abstract:
A tyre for a wheel of a vehicle comprises a toroidal carcass provided with axially opposite sidewalls and beads for anchoring the tyre to a rim of the wheel, a tread band located crownwise on the carcass, comprising a surface with a plurality of hollows and grooves defining a raised tread pattern, and a belt structure interposed between the carcass and the tread band, axially extending between the sidewalls. The tread band comprises at least first and second circumferential axially-contiguous portions arranged to contact a road surface. The first portion is formed of a first composition comprising a reinforcing filler having at least 40%-by-weight carbon black and at least some white filler, the second portion is formed of a second composition comprising a reinforcing filler having at least 20%-by-weight white filler, and the first composition is different from the second composition. A difference of compositions between the at least first and second portions achieves a tyre operating temperature lower than a reference temperature.
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