F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 9/06 (2006.01) B21C 37/12 (2006.01) F16L 9/16 (2006.01)
Patent
CA 2055314
ABSTRACT OF THE DISCLOSURE A bellows pipe construction and method for manufacturing are disclosed wherein helically wound coils of longitudinally corrugated strip are joined with an interlocking seam. Thereafter, the interlocking seam is deformed to position the edges of the strip in substantial parallelism with the axis of the pipe. The resulting pipe can be extended or shortened for installation and will further adjust and accommodate ground movement without substantial loss of strength.
Marks & Clerk
Miller Robert F.
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