Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Within pressurizing chamber
Reexamination Certificate
2003-06-05
2010-10-12
Crawford, Gene (Department: 3651)
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Within pressurizing chamber
C198S657000
Reexamination Certificate
active
07811075
ABSTRACT:
A screw12for an extruder10rotatably supported on the cylinder of the extruder and carrying roll-heated rubber material supplied from a hopper port13sprovided at the rear part of the cylinder11, wherein the height of the portion of the flight portion12zof the screw12located below the hopper port13sis set lower than the height of the flight portion12aon the downstream side of the screw12, whereby the pulsation of extruded matter can be reduced while maintaining a high discharge rate.
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Crawford Gene
Kabushiki Kaisha Bridgestone
Prakasam Ramya
Sughrue & Mion, PLLC
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