Expansion compensating pipe coupling

Details Expansion compensating pipe coupling Expansion compensating pipe coupling

1977-12-23

1979-09-18

Callaghan, Thomas F.

Pipe joints or couplings

Variable length

Telescopic with relative motion

285419, F16L 2712

Patent

active

041680901

ABSTRACT:
An expansion compensating pipe coupling including a circumferential head on one end of one pipe section with the head slidably received in a cylinder secured to one end of another pipe section. Means is provided for retaining the pipe head in the cylinder for checked axial movement to compensate for axial pipe expansion and contraction. One or more expansion rings may be provided on the pipe head for providing a fluid seal. The expansion rings may further be received in annular grooves in the head with passages leading from the bottom of the groove to the interior of the pipe section thereby utilizing the fluid pressure within the coupling to expand the expansion rings in good fluid seal engagement with the interior of the cylinder.

REFERENCES:
patent: 373256 (1887-11-01), Traver et al.
patent: 1204728 (1916-11-01), Arena
patent: 1460787 (1923-07-01), Burch
patent: 2610651 (1952-09-01), Hahn
patent: 2646967 (1953-07-01), Buccanero
patent: 2878062 (1959-03-01), Crow
patent: 2937036 (1960-05-01), Watkins
patent: 3154328 (1964-10-01), Masse
patent: 3223438 (1965-12-01), DeCenzo
patent: 3383125 (1968-05-01), Frost et al.
patent: 3540758 (1970-11-01), Torres
patent: 3873138 (1975-03-01), Griffiths

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