Corrugated pipe coupling having six degrees of freedom

A pipe coupling for joining two portions of a pipe, the pipe coupling comprising:

• an inlet portion;
• an outlet portion disposed opposite the inlet portion;
• an intermediate portion disposed between the inlet and outlet portions for providing relative movement between the inlet portion and the outlet portion;
• the intermediate portion having a plurality of corrugations disposed about a circumference of the pipe coupling, each corrugation having first and second ends;
• each corrugation disposed at substantially a forty-five degree angle relative to a longitudinal axis of the pipe coupling;
• and
• the first and second ends of each corrugation terminating at a transition area where each said end blends with the inlet portion and outlet portion, respectively.

A pipe coupling for joining two portions of a pipe, the pipe coupling comprising:

• an inlet portion;
• an outlet portion disposed opposite the inlet portion;
• an intermediate portion disposed between the inlet and outlet portions for providing relative movement between the inlet portion and the outlet portion;
• the intermediate portion having at least one corrugation band disposed about a circumference of the pipe coupling;
• each corrugation band formed of a plurality of arms, each arm connected to an adjacent arm at a common vertex, each arm diverging from the common vertex along the circumference of the pipe coupling;
• the arms diverging at substantially a forty-five degree angle forming a V-shape;
• and
• each vertex terminating at a transition area that forms a smooth curve from the vertex to a longitudinal axis of the pipe coupling.

A pipe coupling for joining two portions of a pipe, the pipe coupling comprising:

• an inlet portion;
• an outlet portion disposed opposite the inlet portion;
• first and second intermediate portions disposed between the inlet and outlet portions for providing relative movement between the inlet portion and the outlet portion;
• the first intermediate portion having a plurality of corrugations disposed about a circumference of the pipe coupling, each corrugation of the first intermediate portion having
• first and second arms diverging from a common vertex toward the inlet portion and outlet portion, respectively;
• the arms diverging at substantially a forty-five degree angle forming a V-shape;
• and
• each arm terminating at a transition area where each arm of the corrugation blends with the inlet portion and outlet portion, respectively;
• and
• the second intermediate portion having at least one annular corrugation.