Pipe joints or couplings – End to side or plate – Countersunk packed
Patent
1994-04-21
1996-05-14
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
Countersunk packed
285190, 2853827, F16L 1900
Patent
active
055161561
ABSTRACT:
The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port with a tube having a threaded connecting portion. The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer element. For connecting a tube directly in the port, one embodiment of the invention includes an outwardly extending lip on an expanded portion of the tube and a tube nut rim wherein the tube nut engages the expanded portion and by tightening the tube nut, the tube lip deforms on the tapered port and the tube nut rim deforms on both the tapered port and the tube. Another embodiment of the invention provides a fluid coupling for a tube which is transverse to the port, allowing for flow redirection in the coupling similar to the flow redirection in prior art "banjo" couplings. The body of the transverse coupling includes a lip which deforms on the tapered surface of the port, and the body also includes a tapered surface on which a rim of the bolt contacts, thereby providing a contact seal at both potential leak points. Optionally, o-rings may be added to provide additional seals. Both embodiments may be designed not to seal without the application of tool generated torques.
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Nicholson Eric K.
NWD International Inc.
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