Pipe coupling and method of forming the same
AssigneeJ. & M. Manufacturing Co., Inc.
InventorsLarry Liao, Chuck Clark
Life of this patent
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Abstract
A sealing and restraint mechanism operable to couple pipes having a restraint mechanism with a cavity formed in an interior region, and a gripping insert operable to be received within the cavity. The cavity of the restraint mechanism is at least partially defined by a stop and a shoulder. The gripping insert is operable to slide along the cavity and between the stop and the shoulder of the restraint mechanism such that, when the gripping insert slides toward the stop, the gripping insert is biased toward one of the pipes by the restraint mechanism.
Claims14
A method of manufacturing a PVC-O pipe having a sealing and restraint mechanism for coupling pipes, the method comprising the steps of:
- forming a belled end in a PVC-O pipe using a first mandrel;
- subsequently moving the belled end of the PVC-O pipe over a sealing and restraint mechanism that is located on a second mandrel, and applying heat from a heated water to the belled end of the PVC-O pipe and the sealing and restraint mechanism disposed within the belled end;
- and
- cooling the belled end of the PVC-O pipe having the sealing and restraint mechanism formed therein.
Dependencies are inferred from the claim text.