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US 12,372,188 B2Granted
Fitting collar and tube-fitting assemblies incorporating fitting collars
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.
Claims30
A tube assembly comprising:
- a fitting having a first end opposite a second end;
- at least a section of the fitting having an annular outer tapered surface reducing in diameter in a direction axially along an axial direction toward one of said first and second ends;
- a tube having a portion over the annular outer tapered surface;
- and
- an annular collar having an inner surface over an outer surface of the portion of the tube, wherein the collar in cross-section as viewed along a plane extending axially along a diameter of the collar comprises a first section and a second section radially adjacent to the first section, wherein the second section surrounds the first section, wherein said collar comprises a fiber reinforced composite material comprising fibers and resin, wherein substantially all fibers forming one of the first and second sections are axially oriented, and wherein the other of the first and second sections comprises fibers oriented generally transverse to the axial direction, wherein one of the first and second sections has an axial length greater than the axial length of the other of the first and second sections.
2 more elements
An annular collar for applying a radial compressive force to an outer surface of a tube, said collar comprising:
- a first end axially opposite a second end;
- and
- an inner surface, wherein the collar in cross-section as viewed along a plane extending axially along a diameter of the collar comprises a first section and a second section radially adjacent to the first section, wherein the second section surrounds the first section, wherein the collar comprises a fiber reinforced composite comprising fibers and resin, wherein substantially all fibers forming one of the first and second sections are axially oriented along an axial direction, and wherein the other of the first and second sections comprises fibers oriented generally transverse to the axial direction, wherein one of the first and second sections has an axial length greater than the axial length of other of the first and second sections.
A tube assembly comprising:
- a fitting having a first end opposite a second end;
- at least a section of the fitting having an annular outer tapered surface reducing in diameter in a direction axially along an axial direction toward one of said first and second ends;
- a tube having a portion over the annular outer tapered surface;
- and
- an annular collar having an inner surface over an outer surface of the portion of the tube, wherein the collar in cross-section as viewed along a plane extending axially along a diameter of the collar comprises a first section and a second section radially adjacent to the first section, wherein the second section surrounds the first section, wherein said collar comprises a fiber reinforced composite material comprising fibers and resin, wherein fibers forming one of the first and second sections are oriented in a hoop direction, and wherein the other of the first and second sections comprises fibers oriented generally transverse to the hoop direction.
2 more elements
An annular collar for applying a radial compressive force to an outer surface of a tube, said collar comprising:
- a first end axially opposite a second end;
- and
- an inner surface, wherein the collar in cross-section as viewed along a plane extending axially along a diameter of the collar comprises a first section and a second section radially adjacent to the first section, wherein the second section surrounds the first section, wherein the collar comprises a fiber reinforced composite comprising fibers and resin, wherein fibers forming one of the first and second sections are axially oriented along a hoop direction, and wherein the other of the first and second sections comprises fibers oriented generally transverse to the hoop direction.
Dependencies are inferred from the claim text.