Pipe joints or couplings – Particular interface – Tapered
Patent
1982-01-25
1984-11-06
Arola, Dave W.
Pipe joints or couplings
Particular interface
Tapered
2853343, 2853344, 285368, 285414, F16L 2500
Patent
active
044808615
ABSTRACT:
Apparatus for forming a sealed joint between juxtaposed, axially aligned pipe ends includes a pair of annular flange members slidable in facing relation on the pipe ends and having tapered annular interior surfaces converging outwardly of a central axis for forming an annular recess about the pipe ends. A resilient annular sealing gasket generally compatibly shaped with the recess is provided for disposition therewithin about the pipe ends. The gasket has a pair of tapered annular exterior surfaces which converge outwardly when uncompressed at slightly greater respective angles than the tapered interior surfaces of the flange members for respective sealing engagement thereby. A bolt arrangement draws the flange members axially together to compressibly engage the tapered exterior gasket surfaces between the tapered interior flange surfaces, thereby to compress the gasket against and between the pipe ends to seal them. Strikingly unexpectedly increased joint strength is provided over conventional joint-forming apparatus not having the feature of the present invention of contrasting tapers in the gasket and flange members.
REFERENCES:
patent: 1821865 (1931-09-01), Wilson
patent: 2417536 (1947-03-01), Wurzburger
patent: 2531922 (1950-11-01), Seamark
patent: 2613959 (1952-10-01), Richardson
patent: 2898000 (1959-08-01), Hanny
patent: 3333872 (1967-08-01), Crawford et al.
patent: 3761114 (1973-09-01), Blakeley
Arola Dave W.
Columbus Standard, Inc.
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