Patent ID: 7048309

Claim:
A coupling for attachment to an end portion of a pipe, comprising: a coupling body to closely receive an end portion of a pipe to be coupled therewith, said coupling body including an inner end taper and an outer end taper corresponding to the inner end taper; a set of jaw members slidably positioned in the inner end taper of the coupling body so that linear movement of the jaw members toward the end of the inner end taper adjacent an end of the coupling body causes movement of the jaw members radially inwardly of the coupling body against the end portion of the pipe when received in the coupling body; and means for securing the jaw members to the coupling body, said means cooperable with the outer end taper so that linear movement of the jaw members away from the end of the inner end taper adjacent the end of the coupling body causes movement of the jaw members radially outwardly of the coupling body away from the end portion of the pipe when received in the coupling body.