Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent
1988-01-21
1989-04-04
Bryant, III, James E.
Pipes and tubular conduits
With closures and plugs
Inflation stem type
138 90, F16L 5510
Patent
active
048176710
ABSTRACT:
A high pressure mechanical plug device for sealing and locking into a high interior pressure pipeline. The mechanical plug device has a hollow cylindrical body structure with an end wall and a side wall structure having a plurality of apertures. A piston structure having an end wall and a frustoconical ram of a predetermined slope is provided for movement in the cylindrical body structure. An elastomeric sealing member is in communication with the end wall of the piston structure. A plurality of rigid securement members are provided for extension through the apertures of the cylindrical body structure and for slidingly engaging the frustoconical ram. A draw bolt extending axially from the frustoconical ram through the end wall of the cylindrical body is provided with a nut to move the piston structure into the cylindrical body to seal and lock the plug device in the pipeline.
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Mathison Allen D.
Nelson Dale K.
Bryant III James E.
Cherne Industries, Inc.
Eggink Anthony G.
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