B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 23/00 (2006.01) B21C 27/00 (2006.01) B21C 33/00 (2006.01) B21D 43/00 (2006.01) B23Q 7/05 (2006.01) B30B 11/00 (2006.01) B30B 11/22 (2006.01)
Patent
CA 2114453
ABSTRACT OF THE DISCLOSURE An apparatus has first propellers (20) and second propellers (21) alternating with the first propellers. Each propeller has one or more helical biting edges (24a) protruding into a guide passage (28) through which a raw material (W) advances. The biting edges are formed along an inner periphery of each propeller at a predeter- mined lead angle so as to bite an outer periphery of the raw material (W). The apparatus further has a drive mechanism for rotating the first propellers (20) in a direction opposite to that in which the second propellers (21) are driven. The helical biting edges (24a) are inclined such that the raw material (W) may be forced towards a pressure vessel (2) by all the propellers, notwithstanding the opposite directions in which the first and second propellers are driven, so that a strong thrust is applied to the raw material, without causing any torsion of the material which is being forced towards the pressure vessel.
Marks & Clerk
Yugen Kaisha Yano Engineering
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