Pipe joints or couplings – With assembly means or feature – Molded joint facilitator
Patent
1994-04-01
1996-08-20
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Molded joint facilitator
285 55, 285351, 285370, F16L 1302
Patent
active
055472281
ABSTRACT:
A weld connection joining abutted ends of pipe includes a heat limiting sleeve therein which provides a continuous seal to protect the weld and the interior portions of the pipe from the materials passing through the pipe. The sleeve may be configured from a non-metallic material, such as PTFE, and a plurality of seal rings may be located on the outer circumference thereof to seal the sleeve to the interior surface of the pipe. The non-metallic sleeve is inherently non-corrosive, and therefore no secondary protective coatings need be provided on the interior surfaces of the pipe connection to protect the weld. To position the sleeve in the pipe ends, and to properly position the pipe ends for welding, the sleeve includes a plurality of removable spacer pins thereon which are removed from the sleeve before the weld connection is completed.
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Abbema Wiliam D.
Lewis John K.
Arola Dave W.
Streets Jeffrey L.
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