Mechanical pipe coupling assembly without adhesive or bonding agent

A pipe fitting assembly adapted for mechanical joinder with a pipe end without an adhesive or bonding agent, comprising:

• a fitting including an end portion having an end opening defined by an interior annular surface for receiving the pipe end,
• a seal ring for disposition within the end portion of the fitting for sealing contact with the interior annular surface thereof and with the outer annular surface of the pipe end when the pipe end is received within the end portion of the fitting,
• a locking ring for disposition within the end portion of the fitting adjacent the seal ring, and
• a support disk for disposition within the end portion of the fitting adjacent the seal ring and in assembly with the locking ring for supporting the locking ring in a predetermined disposition relative to the outer annular surface of the pipe end and the interior annular surface of the end portion of the fitting,
• the locking ring including a plurality of corrugations extending circumferentially thereabout, the corrugations presenting inner edge portions for engaging the outer annular surface of the pipe end and outer edge portions for engaging the interior annular surface of the end portion of the fitting when the pipe end is received within the end portion of the fitting for opposing withdrawal of the pipe end axially outwardly from the fitting.

A locking device for disposition between a pipe end and an end portion of a pipe fitting for mechanical joinder of the fitting with the pipe end without an adhesive or bonding agent, the locking device comprising:

• a locking ring having a plurality of corrugations extending circumferentially thereabout,
• a support disk having a plurality of support elements spaced apart circumferentially thereabout and shoulders at opposite axial sides of the support elements,
• the locking ring being interwoven with the support elements with the corrugations alternatingly disposed inwardly and outwardly of the support elements and between the shoulders,
• the support disk supporting the locking ring for orientation in a predetermined disposition relative to the pipe end and the end portion of the fitting when disposed therebetween, such that the corrugations present inner edge portions for engaging an outer annular surface of the pipe end and outer edge portions for engaging an interior annular surface of the end portion of the fitting when the pipe end is received within the end portion of the fitting for opposing withdrawal of the pipe end axially outwardly from the fitting.