Downstream plug

Details Downstream plug Downstream plug

1999-05-06

2000-10-10

Brinson, Patrick

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 97, 166122, 166135, F16L 5510

Patent

active

061291188

ABSTRACT:
A downstream plug is disclosed of a simplified structure where a dragging disc is used at a rear end to induce the expansion of locking elements engaging the pipeline. The locking results in an expansion cone being firmly held in place and forming a solid counterpart to the elastomeric seal expanded by the cone.

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Fracmaster Brochure "Multi-Set ISO-Tool" published prior to May 6, 1998 but after Mar. 15, 1994 (exact date and title of publication unknown) (only the two enclosed pages being available to Applicant).

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