B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 15/12 (2006.01) B01F 5/00 (2006.01) B21D 9/10 (2006.01) B21D 11/06 (2006.01) B21D 15/04 (2006.01)
Patent
CA 2614948
Method and apparatus for forming conduit or pipe of various sizes into undulating, helical pipe by feeding a length of conduit at a controlled rate through a bending mechanism while also continuously rotating the pipe at a controlled rate so that bending occurs in multiple axis directions and the diameter of the helical path of the conduit centerline of the coil is less than the conduit diameter, the pitch is greater than the pipe diameter, and a straight open channel is retained through the pipe coil.
Cymbalisty Lubomyr M.
Hemphill Frederick Arthur
Bennett Jones Llp
Undultec Inc.
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