Pipe joints or couplings – With fluid pressure seal – With separate – encased pipe-gripping means
Patent
1993-09-13
1995-08-01
Nicholson, Eric K.
Pipe joints or couplings
With fluid pressure seal
With separate, encased pipe-gripping means
285190, 285184, 285276, 285261, 2853321, F16L 2704
Patent
active
054374804
ABSTRACT:
A pressure sealed connecting apparatus is provided for the connection of first and second conduits adapted to carry a pressure medium and to rotate relative to one another. Each of the conduits has tangentially contacting countersurfaces for contacting spherical surface areas of a rotation body situated between the first conduit and the second conduit. The rotation body has spherical surface areas adapted to be in rotational sealing contact with the tangentially contacting countersurfaces of each of the conduits. The connecting apparatus is further configured such that: the rotation body is sleeve-shaped; each of the conduits has an inner shoulder thereon; the tangentially contacting countersurfaces of each of the conduits are conical ring surfaces axially limited by corresponding inner shoulders on the conduits; the spherical surface areas of the rotation body are zone-like spherical superficies resting on the conical ring surfaces; and the connecting apparatus further comprises a slide cam disposed on the inner shoulders of one of the first conduit and the second conduit for acting on the rotation body to force the rotation body into an inclined position; and a stop disposed on the inner shoulders of another one of the first conduit and the second conduit such that the slide cam forces the sleeve into the inclined position up to the stop.
REFERENCES:
patent: 275098 (1883-04-01), Walker
patent: 1782484 (1930-11-01), Spencer et al.
patent: 1874541 (1932-08-01), Jonsson
patent: 4040650 (1977-08-01), Shotbolt
patent: 4133558 (1979-01-01), Ahlstone
patent: 5067753 (1991-11-01), Porel
patent: 5215338 (1993-06-01), Kimura et al.
Chun Shackelford Heather
Nicholson Eric K.
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