Patent ID: 7240697

Claim:
An apparatus for isolating the end of a pipe, comprising: a body portion, comprising an outer wall and first and second end portions, the body portion adapted for insertion into a pipe, wherein the pipe has an inner wall defining an inner pipe diameter; a pair of resilient scaling members in contact with and spaced apart around the outer wall of the body portion, the sealing members having an adjustable outer diameter; means for adjusting the outer diameter of the sealing members between a first diameter smaller than the inner pipe diameter and a second diameter at least equal to the inner pipe diameter, wherein when the outer diameter of the sealing members is adjusted to the second diameter the sealing members are in sealing engagement with the inner wall of the pipe and define an isolated space between the sealing members, the outer wall of the body portion, and the inner wall of the pipe; and, a center wall located within the body portion at a position between the two sealing members such that, if a fluid within the pipe leaks between the inner wall of the pipe and a sealing member, the center wall and the other sealing member provide a barrier to prevent such fluid from passing downstream of the apparatus.