Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Reexamination Certificate
2005-03-15
2005-03-15
Del Sole, Joseph S. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
C425S190000, C425S380000, C425S462000, C425S467000, C156S123000, C156S394100
Reexamination Certificate
active
06866495
ABSTRACT:
An apparatus for manufacturing tread bands for vehicle tires includes at least one primary extrusion head, a preforming device, at least one auxiliary extrusion head, an auxiliary feeding channel, and an extrusion die. The preforming device includes a primary preforming channel operatively connected to the at least one primary extrusion head. The auxiliary feeding channel is operatively connected to the at least one auxiliary extrusion head. The auxiliary feeding channel connects to the primary preforming channel. A direction of the auxiliary feeding channel forms an angle between approximately 30° and 160° relative to a direction of the primary preforming channel. The extrusion die is connected to the preforming device and includes an extrusion outlet. The auxiliary feeding channel connects to the primary preforming channel substantially near the extrusion outlet.
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Del Sole Joseph S.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Pirelli Coordinamento Pneumatici S.p.A.
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