Pipe coupling useful at high fluid pressures

Details Pipe coupling useful at high fluid pressures Pipe coupling useful at high fluid pressures

1979-04-10

1981-03-03

Callaghan, Thomas F.

Pipe joints or couplings

Nonmetal to metal

Internal member

2853827, F16L 1900

Patent

active

042536863

ABSTRACT:
A pipe coupling particularly adapted for use with plastic pipe carrying fluid at high pressure has a body section from which there extend in the axial direction, two concentric sleeve sections with a concentric annular space between them. The end of a pipe to be coupled is fitted over the internal sleeve and an annular wedge is placed in the annular space between the pipe and the external section. A nut having an annular sleeve is threaded to the external section so that the annular nut sleeve enters the annular space and engages the wedge. Torquing of the nut urges the wedge along a camming surface into tight engagement with the pipe, thus deforming it to prevent its withdrawal from the coupling. The tightness of the coupling is enhanced by variation of the diameter of the internal sleeve in the vicinity of the wedge and by ridges on the internal sleeve into which material of the pipe is forced by the wedge to flow.

REFERENCES:
patent: 871607 (1907-11-01), Montgomery
patent: 3428339 (1969-02-01), Haulik et al.
patent: 3756632 (1973-09-01), Riggs et al.
patent: 3784236 (1974-01-01), Slocum
patent: 3870349 (1975-03-01), Oetiker
patent: 3986731 (1976-10-01), DeHoff

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