Patent ID: 7121593

Claim:
A pipe coupling sealingly engageable with a pipe end, said pipe coupling comprising: a coupling housing having a socket with a diameter sized to receive and circumferentially support said pipe end; a first expanded region positioned adjacent to one end of said socket, said first expanded region having a larger diameter than said socket; a first shoulder positioned between said socket and said first expanded region; a sealing member positioned in said first expanded region to effect a seal between said pipe coupling and said pipe end, said sealing member being engaged with said shoulder; a second expanded region positioned adjacent to said first expanded region, said second expanded region having a larger diameter than said first expanded region; a retainer interfitting within said second expanded region, said retainer comprising a ring sized to circumferentially engage said second expanded region and a plurality of flexible, resilient, elongated teeth arranged circumferentially around said ring, said teeth projecting substantially radially inwardly from said ring and being angularly oriented toward said socket, said teeth being engageable circumferentially with said pipe end for retaining said pipe end within said pipe coupling; a third expanded region positioned adjacent to said second expanded region, said third expanded region having a larger diameter than said second expanded region and forming an open end of said coupling housing for receiving said pipe end; a support washer interfitting within said third expanded region between said retainer and said open end of said coupling housing; and a lip attached to said coupling housing and positioned at said open end, said lip extending substantially radially inwardly and overlapping and engaging said support washer to capture said support washer, said retainer and said sealing member between said shoulder and said lip.