Sealed pipeline connection, pipeline sleeve, and lockable pipeline seals and method of making same

A pipeline sleeve for sealing pipeline pipes of a pipeline, the pipeline sleeve comprising:

• a tubular sleeve body insertable into the pipeline pipes;
• lockable pipeline seals positioned on the tubular sleeve body, each of the lockable pipeline seals comprising:
• a ring-shaped body having a head along a first ring end of the ring-shaped body and a tail along a second ring end of the ring-shaped body with a body portion between the head and the tail, the ring-shaped body having an outer surface and an inner surface along a periphery of the ring-shaped body, a deflection surface and a base surface defined along the outer surface, the deflection surface at an angle to a horizontal axis of the ring-shaped body, the deflection surface with the angle radially outwardly from the base surface;
• a recessed grip defined along the inner surface;
• and wherein the ring-shaped body is compressible such that, when the ring-shaped body is installed between the pipeline sleeve and the pipeline pipe, the deflection surface is urged against the pipeline pipe and the recessed grip grippingly engages the pipeline sleeve whereby a locked seal is formed between the pipeline sleeve and the pipeline pipe;
• wherein the tail has a curved tail shoulder along the inner surface between a tapered surface and the body portion and wherein the tail has a grip tip defined along the curved tail shoulder and the tapered surface, the grip tip aligned horizontally with an inner radial surface of the tubular sleeve body of the pipeline seal.

A sealed pipeline connection, comprising:

• pipeline pipes with a fluid passage therethrough, a first end of a first of the pipeline pipes positioned adjacent a second end of a second of the pipeline pipes;
• a pipeline sleeve positioned in the fluid passage, the pipeline sleeve extending into the first end of the first of the pipeline pipes and the second end of the second of the pipeline pipes;
• and lockable pipeline seals positioned at each end of the pipeline sleeve, each of the lockable pipeline seals comprising:
• a ring-shaped body having a head along a first ring end of the ring-shaped body and a tail along a second ring end of the ring-shaped body with a body portion between the head and the tail, the ring-shaped body having an outer surface and an inner surface along a periphery of the ring-shaped body, a deflection surface and a base surface defined along the outer surface, the deflection surface at an angle to a horizontal axis of the ring-shaped body, the deflection surface with the angle radially outwardly from the base surface;
• a recessed grip defined along the inner surface;
• and wherein the ring-shaped body is compressible such that, when the ring-shaped body is installed between the pipeline sleeve and the pipeline pipe, the deflection surface is urged against the pipeline pipe and the recessed grip grippingly engages the pipeline sleeve whereby a locked seal is formed between the pipeline sleeve and the pipeline pipe;
• wherein the tail has a curved tail shoulder along the inner surface between a tapered surface and the body portion and wherein the tail has a grip tip defined along the curved tail shoulder and the tapered surface, the grip tip aligned horizontally with an inner radial surface of the tubular sleeve body of the pipeline seal.