Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing toroidal work
Reexamination Certificate
2001-12-26
2009-10-06
Vargot, Mathieu D. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing toroidal work
C156S123000, C264S326000, C425S044000, C425S049000
Reexamination Certificate
active
07597837
ABSTRACT:
A method of moulding and curing tires for vehicle wheels includes the steps of disposing a tire being processed on a toroidal support, enclosing the tire and the toroidal support inside a moulding cavity defined in a vulcanization mould, pressing the outer surface of the tire against the moulding cavity walls, and administering heat to the tire to cause molecular crosslinking of the tire. The pressing step includes the steps of compressing side portions of the tire between the moulding cavity walls and the outer surface of the toroidal support, concurrently with the closing step, and imposing an expansion to a radially-outer portion of the tire to bring the radially-outer portion of the tire against the walls of the moulding cavity.
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Abstract from esp@cenet database—EP 0,242,840 (corresponds to U.S. Patent No. 4,895,692).
Abstract from esp@cenet database—EP 0,976,534.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Pirelli Pneumatici S.p.A.
Vargot Mathieu D.
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