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US 11,927,291 B2Granted
Methods for coupling a fitting to a tube using a collar
AssigneeAvtechtyee Inc.
InventorsJustin Edward Gill, Daniel L. Moore, Glenn B. Newell
Life of this patent
Estimating the term…
Abstract
A method for coupling a fitting to a tubing end includes pressing a collar over the outer surface of the tubing until the strain on the collar in the hoop direction is at a predetermined level, or pressing a collar with a predetermined axial load.
Claims21
A method for coupling a fitting to a tube end comprising:
- inserting the fitting to the tube end wherein a portion of the tube surrounding the fitting comprises an outer surface that reduces in diameter in a direction toward the end;
- and
- pressing a collar over said outer surface of said tube with a predetermined axial load causing a tapered inner surface of said collar to engage said tube outer surface, wherein said predetermined axial load positions the collar at a location over the tube for providing sufficient radial pressure on the tube against the fitting forming a connection between the tube and the fitting such that a sufficient axial load on the tube in an axial direction away from the fitting will cause the tube to fail before said connection fails.
A method for coupling a fitting to a tube end comprising:
- inserting the fitting to the tube end wherein a portion of the tube surrounding the fitting comprises an outer surface that reduces in diameter in a direction toward the end;
- and
- pressing a collar comprising a tapered inner surface over said outer surface of said tube with an axial load causing the tapered inner surface to engage the tube outer surface until a strain on the collar in a hoop direction is at a predetermine level.
A method for coupling a fitting to a tube end comprising:
- inserting the fitting to the tube end wherein a portion of the tube surrounding the fitting comprises an outer surface that reduces in diameter in a direction toward the end;
- and
- pressing a collar over said outer surface of said tube with a predetermined axial load causing a tapered inner surface of said collar to engage said tube outer surface, wherein said predetermined axial load positions the collar at an appropriate location over the tube, wherein said collar tapered inner surface comprises a variable taper.
A method for coupling a fitting to a tube end comprising:
- inserting the fitting to the tube end wherein a portion of the tube surrounding the fitting comprises an outer surface that reduces in diameter in a direction toward the end;
- and
- pressing a collar over said outer surface of said tube with a predetermined axial load causing a tapered inner surface of said collar to engage said tube outer surface, wherein said predetermined axial load positions the collar at an appropriate location over the tube, wherein the collar comprises a filler section defining said tapered inner surface and a hoop section over and surrounding the filler section, wherein the hoop section is formed from a plurality of first fibers, wherein at least substantially all of said plurality of first fibers are oriented in a 90° direction, and wherein said filler section is formed from a plurality of second fibers, wherein at least substantially all of said plurality of second fibers are oriented in a longitudinal direction perpendicular to the 90° direction.
A method for coupling a fitting to a tube end comprising:
- inserting the fitting to the tube end wherein a portion of the tube surrounding the fitting comprises an outer surface that reduces in diameter in a direction toward the end;
- and pressing a collar over said outer surface of said tube with a predetermined axial load causing a tapered inner surface of said collar to engage said tube outer surface, wherein said predetermined axial load positions the collar at an appropriate location over the tube, where in the collar comprises a filler section defining said tapered inner surface and a hoop section over and surrounding the filler section.
Dependencies are inferred from the claim text.