Corrugated tubing fitting
AssigneeOmega Flex, Inc.
InventorMark Albino
Life of this patent
Estimating the term…
Abstract
A fitting for use with corrugated stainless steel tubing. The fitting includes a body having a locating sleeve. The locating sleeve aligns the central axis of the body with the central axis of the tubing. A nut, retained on the tubing by split ring washers, is tightened on a threaded end of the body. As the nut is tightened, a taper formed on the body flares the tubing. The flared tubing is compressed between the taper on the body and a beveled section of the split ring washer. This forms a leak proof fitting without the need for separate flaring tools.
Claims8
A fitting coupled to a corrugated tubing comprising:
- corrugated tubing;
- a body for engaging the said corrugated tubing, said body including a conduit for providing access to said corrugated tubing and a tapered end;
- a locating sleeve connected to said body and extending away from said body into said tubing for aligning said body with said corrugated tubing;
- a nut positioned around said corrugated tubing for connecting said body to said corrugated tubing;
- a split ring washer said split ring washer including a bevel having an angle substantially equal to an angle of said tapered end of said body positioned in a valley of said corrugated tubing;
- and
- a double flare of said corrugated tubing positioned between said tapered end of said body and said split ring washer.
A method of connecting a fitting to corrugated metal tubing, the method comprising:
- cutting the tubing in a valley;
- placing a nut over the tubing;
- placing two split ring washers in a valley adjacent to the cut end of the tubing;
- aligning a threaded fitting body having a tapered end with the tubing;
- and
- tightening said nut on said threaded fitting body thereby causing said tapered end to engage the cut end of the tubing to create a double flare of tubing between said tapered end and said split ring washers said split ring washers each including a bevel having an angle substantially equal to an angle of said tapered end of said body;
- wherein aligning comprises placing a locating sleeve that is connected to said body in the tubing.
Dependencies are inferred from the claim text.