Method and apparatus for manufacturing pneumatic tyres
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United States of America Patent
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Mar 17, 2015
Grant Date -
Aug 4, 2011
app pub date -
Apr 11, 2011
filing date -
Dec 28, 2004
priority date (Note) -
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Abstract
A green tire disposed on a toroidal support is introduced into a vulcanization mold. The mold is closed through axial approaching of a pair of sidewall plates acting against the sidewalls of the tire. Circumferential sectors set to operate against the tire tread band are maintained spaced apart from the tread band itself during admission of a working fluid designed to press the tire against the toroidal support. Subsequently, the sectors are centripetally approached for penetration into the tread band concurrently with a step of full molding and vulcanization of the tire carried out through admission of steam under pressure into the tire itself.
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