Patent ID: 6663145
Filing Date: 2003-12-16
Classification: F16L

Abstract:
A grip coupling for securing to a section of tubular conduit, comprising in combination:a coupling body having a tapered entrance section, a seal section and an interior shoulder which faces inboard of said coupling body, wherein said seal section is disposed outboard of said interior shoulder and said tapered entrance section is disposed outboard of said seal section; a grip ring disposed inboard of said interior shoulder, said grip ring having an annular-shaped grip ring body and grip teeth which extend inboard of said grip ring body, at least one of said grip ring body and said grip teeth having an exterior periphery which tapers inward as said exterior periphery extends inboard of said coupling body; a spacer shoulder disposed inboard of said interior shoulder, spaced apart from said interior shoulder for receiving said annular-shaped grip ring body therebetween, such that said grip ring is retained within said coupling body; wherein said tapered entrance section, said seal section and said grip ring are together configured for receiving the section of tubular conduit, with said seal section and said grip ring engaging against an exterior periphery of said tubular conduit with interference fits; and wherein said spacer ring further comprises an interior surface which defines a tapered section which tapers inward in an outboard direction relative to said coupling body and engages against a terminal end portion of the exterior periphery of the section of tubular conduit with an interference fit.