Conduit connector and method
View Patent ↗A conduit connection joint is formed to connect a tube and a fitting body in fluid tight relation. The joint is made by axially compressing the tube in a bore in the fitting body so as to cause formation of an outwardly extending tube bead and at least one inwardly extending tube bead. The engagement of the fitting body and the tube may be further strengthened by a retaining ridge. The retaining ridge may be formed in the fitting body to engage the outwardly extending tube bead to further hold the fitting body and tube in engaged relation.
1. A joint connecting a tube and a fitting body made by a process comprising the steps of:
extending a tube in a bore in a fitting body, wherein the bore is bounded by a bore wall, the bore wall including a generally axially extending bead formation area generally radially disposed from the tube when the tube is first extended therein;
engaging an inward end of said tube against a stop face supported on the fitting body in the bore;
compressing the tube in at least an axial direction in the bore to form at least one outward extending bead in the tube in the bead formation area and at least two inward extending beads in the tube, and wherein the tube engages the bore wall in the bead formation area in fixed fluid tight engagement;
deforming a portion of the fitting body to form a bead retaining ridge;
wherein the joint comprises
a tube,
wherein the tube includes at least one outward extending bead and at least two inward extending beads,
wherein the beads comprise deformed portions of the tube,
a fitting body,
wherein the fitting body includes a bore bounded by a bore wall,
wherein the fitting body is in fixed fluid tight engagement with the tube,
wherein the fitting body includes a deformed portion comprising a bead retaining ridge,
wherein the bead retaining ridge engages an outward extending bead.
2. The joint according to claim 1 wherein an outward extending bead includes an apex, and wherein the apex engages the bore wall in fixed fluid tight engagement.
3. The joint according to claim 2 wherein the bore wall includes a recess into which the apex extends in fixed fluid tight engagement.
4. The joint according to claim 3 wherein the bead retaining ridge engages the outward extending bead having the apex.
5. The joint according to claim 3 wherein an outward extending bead is generally intermediate two adjacent inward extending beads.
6. The joint according to claim 3 wherein the tube includes only one outward extending bead and only two inward extending beads.
7. The joint according to claim 3 wherein the portion of the fitting body is deformed by engagement with a tool.
8. The joint according to claim 7 wherein the tool includes a jaw assembly, wherein the portion of the fitting body is deformed by engagement with the jaw assembly.
9. The joint according to claim 8 wherein the jaw assembly includes a recessed ring.
10. The joint according to claim 8 wherein the jaw assembly includes a projection on a face thereof.
11. The joint according to claim 10 wherein the projection comprises a raised ring.
12. The joint according to claim 11 wherein the raised ring includes an inner edge and an outer edge, wherein the edges slope toward the jaw assembly at different angles.
13. The joint according to claim 11 wherein during engagement of the jaw assembly with the fitting body the raised ring causes body material to be rolled over into the bore to increase resistance to pull apart.
14. The joint according to claim 8 wherein the fitting body includes a projection on a face thereof.
15. The joint according to claim 14 wherein the projection comprises a raised ring.
16. The joint according to claim 15 wherein during engagement of the jaw assembly with the body the raised ring is compressed and forced inwardly to engage the outward extending bead.
17. The joint according to claim 16 wherein the jaw assembly includes a recessed ring, wherein the raised ring is compressed and forced inwardly by engagement with the recessed ring.
18. The joint according to claim 8 wherein the process of making the joint further comprises the step of engaging the tube with the jaw assembly.
19. The joint according to claim 18 wherein the tube is compressed by movement of the jaw assembly relative to the fitting body.
20. The joint according to claim 7 wherein the deformed fitting body engages the outward extending bead with a hook shaped engagement.
21. The joint according to claim 3 wherein the fitting body includes a tube flare seat in the bore for supporting a flared tube.
22. The joint according to claim 21 wherein the tube flare seat extends at a generally 45 degree angle.
23. The joint according to claim 3 wherein the retaining ridge extends both axially and radially inward in the bore.
24. The joint according to claim 3 wherein the retaining ridge is annular and extends adjacent an opening to the bore.
25. The joint according to claim 1 wherein the retaining ridge increases resistance to pull apart.
26. The joint according to claim 1 wherein the bore wall is generally axially extending.
27. The joint according to claim 1 wherein the bore wall is tapered.
28. The joint according to claim 1 further comprising a moldable material.
29. The joint according to claim 3 including a primary seal adjacent the apex and a secondary seal adjacent the retaining ridge.
30. A joint connection comprising:
a tube,
wherein the tube includes a longitudinal axis,
wherein the tube includes an axially extending inner surface,
wherein the tube includes an axially extending outer surface,
wherein the tube includes an end portion,
wherein the tube end portion includes a tube end face,
wherein the tube end portion includes an outwardly extending projection and two adjacent inwardly extending projections,
wherein the projections comprise deformed portions of the tube,
wherein the outwardly extending projection extends radially outward from the outer surface,
wherein the inwardly extending projections extend radially inward from the inner surface,
a fitting body,
wherein the body is in fixed fluid tight engagement with the tube end portion,
wherein the body at least partially surrounds the tube end portion,
wherein the body includes a stop face on which the tube end face engages,
wherein the stop face extends radially and annularly,
wherein the body includes an outer surface,
wherein the body includes a bore bounded by a generally axially extending bore wall,
wherein the bore includes a bore opening adjacent the outer surface,
wherein the bore wall includes a radially and annularly and axially extending recess into which the outwardly extending projection extends in fixed fluid tight engagement,
wherein the recess includes a recess wall adjacent the bore opening,
wherein the recess wall is at least partially formed by a retaining ridge,
wherein the retaining ridge comprises a deformed portion of the body,
wherein the retaining ridge engages the outwardly extending projection,
wherein the fitting body outer surface includes a surface recess adjacent the retaining ridge.
31. The joint according to claim 30
wherein the outwardly extending projection includes an apex,
wherein the inwardly extending projections each include an apex,
wherein the outwardly extending apex is generally axially intermediate the inwardly extending apexes.
32. The joint according to claim 30 wherein the projections comprise beads.
33. The joint according to claim 30 wherein the retaining ridge is annular.
34. A joint connection comprising:
a tube,
wherein the tube includes an axially extending inner surface,
wherein the tube includes an axially extending outer surface,
wherein the tube includes a tube end face,
wherein the tube includes an outwardly extending projection and two inwardly extending projections,
wherein the projections comprise deformed portions of the tube,
wherein the outwardly extending projection extends radially outward from the outer surface,
wherein the outwardly extending projection includes an apex,
wherein the inwardly extending projections extend radially inward from the inner surface,
a fitting body,
wherein the fitting body includes a stop face on which the tube end face engages,
wherein the fitting body includes a bore bounded by a bore wall,
wherein the apex engages the bore wall in a fixed fluid tight engagement.
35. The joint according to claim 34 wherein the fitting body includes a deformed portion comprising a retaining ridge, wherein the retaining ridge engages the outwardly extending projection.
36. The joint according to claim 34 wherein the projections comprise beads.