| 摘要 |
The present invention related to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port (201) with a tube (203) having a threaded connecting portion (202). The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer clement. For connecting a tube (203) directly in the port (201), one embodiment of the invention includes an outwardly extending lip (206) on an expanded portion of the tube (203) and a tube nut rim (211) wherein the tube nut engages the expanded portion and by tightening the tube nut (204), the tube lip (206) de-forms on the tapered port (215) and the tube nut rim (211) deforms on both the tapered port (215) and the tube (203). Another embodiment of the invention provides a fluid coupling for a tube (338) which is transverse to the port, allowing for flow redirection in the coupling similar to the flow redirection inprior art "banjo" coupling. The body of the transverse coupling includes a lip (353) which deforms on the tapered surface of the port (303), and the body also includes a tapered surface (360) on which a rim (359) of the bolt (350) contacts, thereby providing a contact seal at both potential leak points. Optionally, o-rings (323, 322) 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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