Patent ID: 6454316
Filing Date: 2002-09-24
Classification: F16L,Y10T

Abstract:
A seal ring retaining system for a pipe coupling, wherein the pipe coupling includes a pair of flanges and a seal ring, wherein the seal ring is configured to be positioned between the flanges in the assembled coupling, wherein the seal ring retaining system comprises:a first flange having a seal seat configured to accommodate a seal ring; and a plurality of cams, wherein said cams are connected to one of the flanges around the periphery of said seal seat, wherein each said cam has a body and a lip which extends outward from the circumference of said body, said lip forming an annulus having a truncated portion, wherein each said cam is rotatable from an open position to a closed position, wherein when said each cam is in said open position said lip is positioned to allow a seal ring to be placed on and removed from said seal seat, and wherein when said each cam is in said closed position said lip is positioned to engage a seal ring located on said seal seat to thereby prevent said seal ring from being removed from said seal seat.