B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 19/00 (2006.01) B28B 13/02 (2006.01) B28B 21/48 (2006.01) B65H 81/08 (2006.01)
Patent
CA 2107255
The invention relates to a method and apparatus for wrapping pipe with a cementatious material such as concrete. The material is conveyed to the pipe as a continuous strip provided with notches along one edge and complementary notches are formed at the other edge of the strip as the strip is wrapped spirally onto the pipe. The continuous strip is formed in a hopper having a number of sections of successively reduced widths and containing rollers by which successive superimposed layer portions of the strip are formed with reinforcing mesh embedded between successive layer portions.
Ridout & Maybee Llp
Shaw Industries Ltd.
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