Air conditioner
US-11421292-B2 · Aug 23, 2022 · US
US2016175907A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016175907-A1 |
| Application number | US-201414577142-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 19, 2014 |
| Priority date | Dec 19, 2014 |
| Publication date | Jun 23, 2016 |
| Grant date | — |
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Official abstract text for this publication.
A method of tubing manufacture comprising forming a tube having an internal artifact projecting radially inward from a tube inner surface, retaining the tube in a fixture, broaching an end of the tube to remove a longitudinal portion of the internal artifact which longitudinal portion is less than a total length of the tube, finishing the radius of the internal artifact so it is substantially equal to a radius (R 1 ) of the adjacent inner surface, and forming a single flare on the end of the tube.
Opening claim text (preview).
I claim: 1 . A method of tubing manufacture comprising: forming a tube having an internal artifact projecting radially inward from a tube inner surface; retaining the tube in a fixture; broaching an end of the tube to remove a longitudinal portion of the internal artifact which longitudinal portion is less than a total length of the tube; finishing the radius of the internal artifact so it is substantially equal to a radius (R 1 ) of the adjacent inner surface; and forming a single flare on the end of the tube. 2 . The method of tubing manufacture as in claim 1 comprising extending the broach within the tube for a longitudinal distance that is at least greater than a radius of the tube. 3 . The method of tubing manufacture as in claim 1 , wherein the internal artifact is a weld bead. 4 . The method of tubing manufacture as in claim 1 , wherein the broach is linear. 5 . The method of tubing manufacture as in claim 1 , wherein the weld bead is chamfered. 6 . The method of tubing manufacture as in claim 1 comprising forming a second flare in the end of the tube. 7 . A method of tubing manufacture comprising: forming a tube having a weld bead projecting radially inward from a tube inner surface; retaining the tube in a fixture; broaching the tube a longitudinal distance at least greater than a radius of the tube to remove a longitudinal portion of the weld bead, which longitudinal portion is less than a total length of the tube; finishing the radius of the weld bead so it is substantially equal to a radius (R 1 ) of the tube; and flaring the broached end of the tube. 8 . The method as in claim 7 comprising applying a second flare to the broached end of the tube. 9 . The method as in claim 7 wherein the flare comprises an angle of approximately 37°.
removing or treating the weld bead · CPC title
Bending rods, profiles, or tubes (B21D11/02 - B21D11/18 take precedence; using mandrels or the like B21D9/00) · CPC title
internally · CPC title
Enlarging · CPC title
Reverse flanging of tube ends · CPC title
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