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US 12,510,201 B2Granted
Click fit restrained pipe joining system for plastic pipe
AssigneeS & B Technical Products, Inc.
InventorsGuido Quesada, Mark A. Weih, Sam Gjorven
Life of this patent
Estimating the term…
Abstract
A restrained pipe joining system for plastic pipe is shown comprising male and female pipe ends, the male pipe end having an external circumferential groove and the female pipe end having an internal recess which contains a circumferential casing element, the casing element receives a non-circular click fit restraint ring which engages the external circumferential groove of the male pipe end during the make-up of the pipe ends to form a sealed and restrained pipe joint.
Claims17
A joining system for use in assembling a restrained joint of pipe, fitting, coupling or other shape to join a first section of pipe with a second section of pipe for the purpose of conveyance of liquids, gases, or sustaining a solid, wherein the solid comprises a wire or a cable in a protected environment, the joining system comprising:
- the first section of pipe having a female, belled pipe end with an end opening and having an exterior surface, an interior surface and having a circumferential recess formed in the belled pipe end adjacent the end opening on the interior surface thereof;
- the second section of pipe having a mating male pipe end having an interior surface and exterior surface, and wherein the exterior surface has at least one groove formed at one circumferential location thereof which is alignable with the interior recess formed in the belled pipe end when the male pipe end is inserted within the mouth opening of the belled pipe end to form a joint;
- ring-shaped casing element installed within the circumferential recess provided in the belled end of the first section of pipe, the casing element having an inner circumferential surface and an outer circumferential surface and having at least one groove formed at one inner circumferential location on the inner circumferential surface thereof;
- an associated sealing element located within the circumferential recess provided in the first section of pipe adjacent the casing element, the sealing element having an inner circumferential region and an outer circumferential region, the outer circumferential region being arranged to form a seal with the interior surface of the belled end while the inner circumferential region forms a sealing surface for the exterior surface of the mating male pipe section;
- a click-fit restraint ring located in the groove formed on the inner circumferential surface of the casing element, the click-fit restraint ring having a non-circular shape with a wavy pattern, the click-fit restraint ring being actuated by contact with the male pipe end as the pipe joint is made up to move between an initial relaxed state to an intermediate extended state, and finally to a collapsed state in which portions of the ring snaps into place in the groove formed on the exterior surface of the male pipe end to thereby restrain the male pipe end;
- and
- wherein the click-fit restraint ring has a wavy pattern forming a series of spaced lobes on the circumference thereof, with selected outermost regions of the ring locating themselves in the casing groove and selected innermost regions locating themselves in the groove provided in the exterior surface of the male pipe end as assembly of the pipe joint proceeds, and wherein after assembly is complete, the innermost regions of the click-fit restraint ring drop into the groove formed on the exterior surface of the male pipe end.
4 more elements
A joining system for use in assembling a restrained joint of pipe, fitting, coupling or other shape to join a first section of pipe with a second section of pipe for the purpose of conveyance of liquids, gases, or sustaining a solid, wherein the solid comprises a wire or a cable in a protected environment, the joining system comprising:
- the first section of pipe having a female, belled pipe end with an end opening and having an exterior surface, an interior surface and having a circumferential recess formed in the belled pipe end adjacent the end opening on the interior surface thereof;
- the second section of pipe having a mating male pipe end having an interior surface and exterior surface, and wherein the exterior surface has at least one groove formed at one circumferential location thereof which is alignable with the interior recess formed in the belled pipe end when the male pipe end is inserted within the mouth opening of the belled pipe end to form a joint;
- a ring-shaped casing element installed within the circumferential recess provided in the belled end of the first section of pipe, the casing element having an inner circumferential surface and an outer circumferential surface and having at least one groove formed at one inner circumferential location on the inner circumferential surface thereof;
- an associated sealing element co-located within the circumferential recess provided in the first section of pipe adjacent the casing element, the sealing element having an inner circumferential region and an outer circumferential region, the outer circumferential region being arranged to form a seal with the interior surface of the belled end while the inner circumferential region forms a sealing surface for the exterior surface of the mating male pipe section;
- a click-fit restraint ring located in the groove formed on the inner circumferential surface of the casing element, the click-fit restraint ring having a non-circular shape with a wavy pattern, the click-fit restraint ring being actuated by contact with the male pipe end as the pipe joint is made up to move between an initial relaxed state to an intermediate extended state, and finally to a collapsed state in which portions of the ring snaps into place in the groove formed on the exterior surface of the male pipe end to thereby restrain the male pipe end;
- and
- wherein the click-fit restraint ring has a polygonal shape with selected regions of the restraint ring having a maximum diameter which acts to keep the ring centered in the casing groove prior to the joint make-up and selected regions of minimum diameter which interfere with the male pipe end during assembly of the joint, the regions of minimum diameter bending outward to admit the male pipe end as the assembly begins and then dropping into the groove on the exterior surface of the male pipe end as assembly proceeds to joint make-up.
4 more elements
Dependencies are inferred from the claim text.