Pipe joints or couplings – Packed – Wedge
Patent
1987-09-21
1989-09-19
Callaghan, Thomas F.
Pipe joints or couplings
Packed
Wedge
2853827, F16L 1908
Patent
active
048674893
ABSTRACT:
A fitting for joining a tube to a threaded body member includes a nut having a conical camming surface and a collapsible sleeve with a mating conical surface and internal annular serrations for gripping the tube. A seal in the face of the body member seals against a front transverse shoulder of the sleeve while an internal groove in the sleeve houses an o-ring for sealing against the tube. The rear wall of the groove is in a dogleg configuration and is engaged with the rear end of the sleeve to be collapsed therewith into close engagement and embedment with the tube to prevent seal extrusion at high pressures. The sleeve includes stop shoulders thereon to limit threaded engagement of the nut and thus the collapse of the sleeve and is disclosed in one and two piece embodiments.
REFERENCES:
patent: 2466527 (1949-04-01), Wolfram
patent: 2693374 (1954-11-01), Wurzburger
patent: 2912262 (1959-11-01), Franck
patent: 3025084 (1962-03-01), Franck
patent: 3687494 (1972-08-01), Graff
patent: 3857591 (1974-12-01), Voss
patent: 4136897 (1979-01-01), Haluch
patent: 4529231 (1985-07-01), Greenawalt
Callaghan Thomas F.
Morgan Christopher H.
Parker Hannifin Corporation
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