Pipe joints or couplings – For branched path – T-type
Patent
1993-11-15
1997-04-29
Melius, Terry Lee
Pipe joints or couplings
For branched path
T-type
285155, 285286, 138114, 29890148, F16L 4702
Patent
active
056241402
ABSTRACT:
A double containment pipe fitting and method of making same is disclosed. The fitting includes a branch double containment pipe section butt welded to a double containment pipe header, or main section to form a fitting wherein the branch section extends away from the header section. The header and branch section primary and secondary pipe portions contain distinct engagement surfaces which are joined together to form the fitting. A unique, non-planar heating element having opposed heating surfaces is brought into contact with the main and branch pipe sections to soften the plastic for welding purposes which are then joined together in a manner such that the respective centerlines of each pipe section intersect.
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Military Standardized Handbook (MIL-HDBK-700{MR})- Plastics, pp. 44-47 Polypropylene, 1 Nov. 1965.
Allen John
Ewen Alec
Gurney Robert
Enfield Industrial Corporation
Melius Terry Lee
Shackelford Heather
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