B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/56
B21D 15/00 (2006.01) B21C 37/20 (2006.01) B21D 15/04 (2006.01) B21D 51/12 (2006.01) H01B 13/00 (2006.01)
Patent
CA 1174120
APPARATUS FOR CORRUGATING PIPES Abstract of the Disclosure An apparatus for the corrugation of pipes of plastically deformable material, particularly of cable sheathings of metal, through which the pipe is continuously passed, comprising a corrugator rolling bushing having an inside surface with a deformation rib which is helical (when annular parallel corrugations are to be produced on the pipe) of more than one thread, or with at least one de- formation rib acting on successive points viewed in the longitudinal direction of the pipe (when helical corru- gations are to be produced in the pipe), the corrugator rolling bushing being supported for free rotation in a rotatable corrugator head, the inside diameter of the corrugator rolling bushing being larger than the diameter of the pipe to be corrugated and the corrugator rolling bushing being supported eccentrically to the pipe. The ratio of the inner diameter of the inside diameter defined by the deformation rib or ribs to the outside diameter of the corrugated pipe in the region of a corrugation valley thereof is 2 : 1, or an integral multiple thereof, with a maximum deviation of 5%.
381630
Gowling Lafleur Henderson Llp
Kabel- Und Metallwerke Gutehoffnungshutte Aktiengesellschaft
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