Coupling
First Claim
Patent Images
1. A fitting assembly connected to an end of a length of tubing having a tubing wall, the fitting assembly comprising:
- a body having a socket portion, the socket portion having a forward end opening into an internal bore into which a tubing end is insertably received, the bore having a generally annular inner surface, and the body socket portion having a generally annular outer surface including an inclined portion tapering to the body forward end, the bore inner surface having a number of teeth, a rearwardmost one of the teeth being spaced-apart rearwardly axially from the rest of the teeth, with said rest of the teeth being disposed adjacent the body forward end and on a portion of the inner bore surface that is axially aligned with the inclined portion of the outer surface; and
a generally annular collar received coaxially over the tubing, the collar having a forward end and a rearward end portion received coaxially over the outer surface of the body socket portion, the collar rearward end portion having a generally annular inner surface including an inclined portion tapering towards the collar forward end,whereby with the collar rearward end portion having been moved over the body socket portion effecting a camming engagement of the inclined portion of the body socket portion outer surface against the inclined portion of the collar inner surface, the body socket portion is radially compressed about the tubing wherein such compression initially causes the teeth to grippingly bite into the tubing wall and thereafter to deform the tubing wall between said one of the teeth and said rest of the teeth delimiting the removal of the tubing end from the body socket portion.
3 Assignments
0 Petitions
Accused Products
Abstract
A coupling for attaching to an end of a tube, pipe, conduit or other round solid or hollow section. The coupling includes an inner body and a collar to be provided around the inner body. The inner body has an interior bore passing through at least a portion thereof to receive a tube and the bore has one or more interior annular protuberances extending into the bore. When the collar is provided around the inner body it applies a circumferential compressive force to deform the inner body such that the one or more annular protuberances engage the tube to seal with it.
50 Citations
8 Claims
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1. A fitting assembly connected to an end of a length of tubing having a tubing wall, the fitting assembly comprising:
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a body having a socket portion, the socket portion having a forward end opening into an internal bore into which a tubing end is insertably received, the bore having a generally annular inner surface, and the body socket portion having a generally annular outer surface including an inclined portion tapering to the body forward end, the bore inner surface having a number of teeth, a rearwardmost one of the teeth being spaced-apart rearwardly axially from the rest of the teeth, with said rest of the teeth being disposed adjacent the body forward end and on a portion of the inner bore surface that is axially aligned with the inclined portion of the outer surface; and a generally annular collar received coaxially over the tubing, the collar having a forward end and a rearward end portion received coaxially over the outer surface of the body socket portion, the collar rearward end portion having a generally annular inner surface including an inclined portion tapering towards the collar forward end, whereby with the collar rearward end portion having been moved over the body socket portion effecting a camming engagement of the inclined portion of the body socket portion outer surface against the inclined portion of the collar inner surface, the body socket portion is radially compressed about the tubing wherein such compression initially causes the teeth to grippingly bite into the tubing wall and thereafter to deform the tubing wall between said one of the teeth and said rest of the teeth delimiting the removal of the tubing end from the body socket portion. - View Dependent Claims (2, 3)
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4. A tubing connection comprising:
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a length of tubing having an end and a tubing wall; a body having a socket portion, the socket portion having a forward end opening into an internal bore into which the tubing end is insertably received, the bore having a generally annular inner surface, and the body socket portion having a generally annular outer surface including an inclined portion tapering to the body forward end, the bore inner surface having a number of teeth, a rearwardmost one of the teeth being spaced-apart rearwardly axially from the rest of the teeth, with said rest of the teeth being disposed adjacent the body forward end and on a portion of the inner bore surface that is axially aligned with the inclined portion of the outer surface; and a generally annular collar received coaxially over the tubing, the collar having a forward end and a rearward end portion received coaxially over the outer surface of the body socket portion, the collar rearward end portion having a generally annular inner surface including an inclined portion tapering towards the collar forward end, whereby with the collar rearward end portion having been moved over the body socket portion effecting a camming engagement of the inclined portion of the body socket portion outer surface against the inclined portion of the collar inner surface, the body socket portion is radially compressed about the tubing wherein such compression initially causes the teeth to grippingly bite into the tubing wall and thereafter to deform the tubing wall between said one of the teeth and said rest of the teeth delimiting the removal of the tubing end from the body socket portion. - View Dependent Claims (5, 6)
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7. A method of making a tubing connection comprising the steps of:
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(a) providing a length of tubing having an end and a tubing wall; (b) providing a fitting assembly comprising; a body having a socket portion, the socket portion having a forward end opening into an internal bore for receiving the tubing end, the bore having a generally annular inner surface and the body socket portion having a generally annular outer surface including an inclined portion tapering to the body forward end, the bore inner surface having a number of teeth, a rearwardmost one of the teeth being spaced-apart rearwardly axially from the rest of the teeth, with said rest of the teeth being disposed adjacent the body forward end and on a portion of the inner bore surface that is axially aligned with the inclined portion of the outer surface, and a generally annular collar receivable coaxially over the tubing, the collar having a forward end and a rearward end portion receivable coaxially over the outer surface of the body socket portion, the collar rearward end portion having a generally annular inner surface including an inclined portion tapering towards the collar forward end; (c) receiving the collar over the tubing; (d) inserting the end of the tubing into the internal bore of the body; and (e) moving the collar rearward end portion over the body socket portion to effect a camming engagement of the inclined portion of the body socket portion outer surface against the inclined portion of the collar inner surface and radial compression of the body socket portion about the tubing wherein such compression initially causes the teeth to grippingly bite into the tubing wall and thereafter to deform the tubing wall between said one of the teeth and said rest of the teeth delimiting the removal of the tubing end from the body socket portion. - View Dependent Claims (8)
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Specification