Abstract: A first pipe is connected to the wall of a container such as a larger pipe, tank or other vessel, wherein the transverse surface of one end of the first pipe is substantially flush with the inside surface of the portion of the wall of the container to which the first pipe is connected. The method for forming the pipe connection relies upon the plastic memory of the synthetic thermoplastic polymeric material from which the end portion of the first pipe and the portion of the wall of the container, to which the first pipe is to be connected, are formed. The diameter of a hole in the wall of the container is expanded in a cold condition in such a manner that the edges of the hole expand outwardly from the wall of the container while the diameter of the end portion of the first pipe is reduced in a cold condition such that the reduced diameter portion of the first pipe can be inserted into the expanded hole.

Abstract: The conduit structure comprises an outer tubular housing having a tubular inner member disposed therein with a first end of the inner member being positioned in the medial portion of the outer housing and retained therein by means of an outwardly extending flared portion on the first end of the tubular inner member which is constrained between two longitudinally spaced inwardly extending annular projections formed on the inner surface of the outer housing. A resilient annular seal is provided between the outer surface of the tubular inner member and the inner surface of the medial portion of the outer housing. The tubular inner member extends from one end of the outer housing and a second resilient annular seal is provided between the tubular member and said end of the outer housing. The tubular inner member is adapted for longitudinal, radial and rotational movement relative to the outer housing.

Abstract: A first pipe is connected to the wall of a container such as a larger pipe, tank or other vessel, wherein the transverse surface of one end of the first pipe is substantially flush with the inside surface of the portion of the wall of the container to which the first pipe is connected. The method for forming the pipe connection relies upon the plastic memory of the synthetic thermoplastic polymeric material from which the end portion of the first pipe and the portion of the wall of the container, to which the first pipe is to be connected, are formed. The diameter of a hole in the wall of the container is expanded in a cold condition in such a manner that the edges of the hole expand outwardly from the wall of the container while the diameter of the end portion of the first pipe is reduced in a cold condition such that the reduced diameter portion of the first pipe can be inserted into the expanded hole.

Abstract: The conduit structure comprises an outer tubular housing having a tubular inner member disposed therein with a first end of the inner member being positioned in the medial portion of the outer housing and retained therein by means of an outwardly extending flared portion on the first end of the tubular inner member which is constrained between two longitudinally spaced inwardly extending annular projections formed on the inner surface of the outer housing. A resilient annular seal is provided between the outer surface of the tubular inner member and the inner surface of the medial portion of the outer housing. The tubular inner member extends from one end of the outer housing and a second resilient annular seal is provided between the tubular member and said end of the outer housing. The tubular inner member is adapted for longitudinal, radial and rotational movement relative to the outer housing.

Abstract: An adapter for connecting a plastic pipe system to a metallic pipe system; including an elongated, plastic sleeve having a first end thereof adapted to be joined to a plastic pipe system and a second end thereof adapted to be joined to a metallic pipe system and an elongated, metallic reinforcing sleeve, having an outside diameter substantially equal to the inside diameter of the second end of the plastic sleeve, a length less than the length of the plastic sleeve and a significant portion of one end tapered from the diametric exterior thereof inwardly and toward the one end thereof, mounted in the second end of the plastic sleeve with its tapered end toward the interior of the plastic sleeve. A pipeline structure including the adapter joined at one end to a plastic pipe system and the other end joined to a metallic pipe system is also described.

Abstract: The conduit structure comprises an outer tubular housing having a tubular inner member disposed therein with a first end of the inner member being positioned in the medial portion of the outer housing and retained therein by means of an outwardly extending flared portion on the first end of the tubular inner member which is constrained between two longitudinally spaced inwardly extending annular projections formed on the inner surface of the outer housing. A resilient annular seal is provided between the outer surface of the tubular inner member and the inner surface of the medial portion of the outer housing. The tubular inner member extends from one end of the outer housing and a second resilient annular seal is provided between the tubular member and said end of the outer housing. The tubular inner member is adapted for longitudinal, radial and rotational movement relative to the outer housing.