Pipe joints or couplings – Elbow
Patent
1992-10-30
1994-11-15
Reese, Randolph A.
Pipe joints or couplings
Elbow
285363, 285405, 285903, 333242, 138 37, 138 44, 138122, F16L 55045
Patent
active
053641361
ABSTRACT:
Joint formers for coupling between duct components having different cross-sections include a core having holes for fixing members and an opening provided with a hollowed out recess. In the opening there is formed at least one series of stepped spot-faced edges forming a series of cavities, each cavity rotated with respect to the others.
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"Electronic Communications Systems," 2nd Edition, George Kennedy, McGraw-Hill, Inc., 1977, pp. 373 to 374.
Brambilla Enrico
Forti Adriano
Alcatel Italia S.P.A.
Chun Heather
Reese Randolph A.
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