Title:
CARCASS SHAPING METHOD AND DRUM FOR MANUFACTURING A TYRE FOR VEHICLE WHEELS
Document Type and Number:
WIPO Patent Application WO/2003/013835
Kind Code:
A1
Abstract:
A cylindrical casing sleeve (80), comprising at least one casing ply having terminal flaps turned around corresponding annular reinforcing structures (84), is formed on a building drum (4). An outer sleeve comprising a tread applied to the exterior of a belt structure is formed on an auxiliary drum (8). The casing sleeve (80) and the outer sleeve are transferred in succession to a shaping drum (2) on which two sidewalls (81) have previously been positioned. The sidewalls (81) are held by their inner edges next to the annullar reinforcing structures (84) used to hold the casing sleeve (80) on to the shaping drum (2). The casing sleeve (80) is shaped into a toroidal shape in order to join it to the outer sleeve. The sidewalls (81) are then turned over and applied to the lateral surfaces of the casing sleeve (80).
Inventors:
BOSIO GIANLUIGI (IT)
RUNGO ROBERTO (IT)
RUNGO ROBERTO (IT)
Application Number:
PCT/EP2002/008186
Publication Date:
February 20, 2003
Filing Date:
July 23, 2002
Export Citation:
Assignee:
PIRELLI (IT)
BOSIO GIANLUIGI (IT)
RUNGO ROBERTO (IT)
BOSIO GIANLUIGI (IT)
RUNGO ROBERTO (IT)
International Classes:
B29D30/24; B29D30/36; B29D30/30; B29K21/00; (IPC1-7): B29D30/36; B29D30/24
Foreign References:
| US4470867A | 1984-09-11 | |||
| EP0997263A2 | 2000-05-03 | |||
| NL8200053A | 1983-08-01 | |||
| FR2093180A5 | 1972-01-28 | |||
| EP1216814A1 | 2002-06-26 | |||
| DD118248A1 | 1976-02-20 | |||
| US4243451A | 1981-01-06 | |||
| US5582666A | 1996-12-10 | |||
| US4798276A | 1989-01-17 |
Attorney, Agent or Firm:
Giannesi, Pier Giovanni (222 Milano, IT)
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