Pipe joints or couplings – With assembly means or feature – Molded joint facilitator
Patent
1986-02-07
1987-03-24
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
Molded joint facilitator
285286, 228250, F16L 1302
Patent
active
046520198
ABSTRACT:
A partially consumable spacer chill ring for welding a pair of adjacent pipe ends together, includes a non-consumable, substantially annular, base metal ring having an outer surface with an outside diameter permitting a snug fit interiorly of the pipe ends to be welded, the non-consumable base metal ring being effectively continuous with at most a small transverse slit; and a consumable, substantially annular, filler metal spacer ring medially attached to the outer surface of the base ring and projecting radially outwardly therefrom, for spacing apart and for welding the pipe ends together by supplying filler metal from the consumable spacer ring to the weld during a first root pass of a welding operation, the consumable filler metal ring having, in cross-section, a radial leg extending extending medially with respect to and radially outwardly from the outer surface of the base metal ring, and two opposite, transverse legs extending on opposite sides of the radial leg and positioned on the outer surface of the base metal ring, so as to provide, in cross-section, an inverted "T" shape or an inverted cross shape.
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Callaghan Thomas F.
Jackson David A.
Robvon Backing Ring Company
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