Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Serially arranged chambers each housing a kneading or mixing...
Patent
1997-08-13
1998-07-21
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Serially arranged chambers each housing a kneading or mixing...
425207, 425208, 425209, 366 79, 366 88, 366 94, 366 95, B29B 742, B29B 750, B29C 4738
Patent
active
057832269
ABSTRACT:
An extruder device includes a rotor rotatably received in a housing and a tube secured to the rotor and having a helical screw formed in the outer portion. A screw member is engaged in the bore of the rotor and secured in the tube and rotated in concert with the tube and the rotor. The material to be extruded is supplied onto the tube and moved by the helical screw and then by the screw member. The helical screw includes a pitch greater than that of the screw member for allowing the helical screw of the tube to squeeze the material.
REFERENCES:
patent: 4795599 (1989-01-01), Herrington
patent: 4872761 (1989-10-01), Creyer
patent: 5088914 (1992-02-01), Brambilla
patent: 5215374 (1993-06-01), Meyer
patent: 5356281 (1994-10-01), Katsum et al.
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