Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1975-08-06
1977-02-01
Callaghan, Thomas F.
Pipe joints or couplings
With fluid pressure seal
Flexible lip
285 93, 285 96, 285113, 285261, 285270, 285DIG18, F16L 2706
Patent
active
040058816
ABSTRACT:
Apparatus for connecting the ends of two pipes comprising; a pair of coupling members, each of which is connected at one end thereof to the end of one of the pipes; one of the coupling members having attached to the other end thereof an annular spherically-shaped enlarged portion having axially forward and rearward sides; the other coupling member having attached to the other end thereof a housing having an internal surface for receiving the spherically-shaped forward side of said enlarged portion in mating engagement therewith, thereby enabling the central axes of the coupling members to be inclined at an angle relative to each other for connecting similarly inclined pipe ends; seal means disposed between the enlarged portion and the housing for providing a fluid seal therebetween; a plurality of cam members supported in circumferentially disposed relation about the housing and movable axially and radially inward towards the internal surface between a retracted position in which the housing freely receives the spherically-shaped forward side of the enlarged portion in mating engagement therewith, and an extended and locked position in which the cam members engage the spherically-shaped rearward side at a plurality of points circumferentially thereabout to urge the enlarged portion into positive contact with the housing to restrain the coupling members against relative axial separation; and means for moving the cam members towards the extended and locked position.
REFERENCES:
patent: 908414 (1908-12-01), Mellin
patent: 1193483 (1916-08-01), Parker
patent: 2714021 (1955-07-01), Froidevaux
patent: 3134613 (1964-05-01), Regan
patent: 3185504 (1965-05-01), Perrot et al.
patent: 3873138 (1975-03-01), Griffiths et al.
patent: 3874706 (1975-04-01), Arnold
Burton James A.
Marsh Gerald A.
Callaghan Thomas F.
HydroTech International, Inc.
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