B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
259/42.8
B29B 7/48 (2006.01) B01F 7/04 (2006.01) B01F 7/10 (2006.01) B29C 47/40 (2006.01) B29C 47/64 (2006.01)
Patent
CA 1247595
TITLE COUNTER-ROTATING MULTIPLE SCREW APPARATUS ABSTRACT OF THE DISCLOSURE Counter-rotating intermeshing rotors are employed to generate films of viscous material to enhance processing. The rotors are configured that they trap viscous material in open-ended chamber defined by the rotor surfaces. As rotation proceeds the chamber decrease in volume and the material is expelled through the ends of the chambers as a film. longitudinally adjacent rotor each have a different angular orientation about their centers of rotation to provide a sawtooth stepped helix to convey material longitudinally.
480420
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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