Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent
1982-09-20
1984-07-31
Bryant, III, James E.
Pipes and tubular conduits
With closures and plugs
Inflation stem type
1510416, F16L 5510
Patent
active
044624301
ABSTRACT:
A plugging device for machining operations having a pair of flexible, concavo-convex disks coaxially mounted in spaced relation on a central support mandrel and seated in circumferential grooves thereon, the convex side of each disk normally facing the mandrel's leading end. The mandrel is adapted for interfitting engagement at its opposite end by an insertion tool having releasable locking jaws. The diameter of the disks is slightly greater than the inner diameter of the pipe and is deformable for insertion to a desired point in the pipe, the arcs of the disk then being reversed to seal the disk edges against the inner pipe walls. When removing from the pipe, the arcs are reversed as they are withdrawn from the pipe, allowing withdrawal of the plug with the disks catching and removing coolant and metal waste during withdrawal.
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Anthony Leonard R.
Anthony Ted N.
Bryant III James E.
Reilly John E.
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