F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 47/06 (2006.01) B29C 57/02 (2006.01)
Patent
CA 2150280
A plastic pipe having a belled region to be used as a coupling to another pipe comprises a main pipe section and a shorter pipe section continuous with and diametrically expanded relative to the main pipe section to form the bell. The shorter pipe section is stiffer than the main pipe section prior to its expansion and after expansion the shorter pipe section and the main pipe section are of substantially the same stiffness.
Lupke Manfred A. A.
Lupke Stefan A.
Dennison Associates
Lupke Manfred A. A.
Lupke Stefan A.
LandOfFree
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